Category: Class 5

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th English Guide Pdf Term 1 Poem 2 Farmer’s Friend Text Book Back Questions and Answers, Summary, Notes.

Tamilnadu Samacheer Kalvi 5th English Solutions Term 1 Poem 2 Farmer’s Friend

5th English Guide Farmer’s Friend Text Book Back Questions and Answers

Let us Understand:

A. Match the rhyming words:

1. filth	a. farmer
2. cook	b. harm
3. charm	c. wealth
4. armour	d. look

Answer:

1. filth	a. wealth
2. cook	b. look
3. charm	c. harm
4. armour	d. farmer

B. Fill in the blanks:

Question 1.
It ploughs soil before _______.
Answer:
Farmer

Question 2.
It is used in the fisher’s _______.
Answer:
Hooks

Question 3.
We don’t use _______ in the soil.
Answer:
Chemicals

Question 4.
Be humble like a _______.
Answer:
Worm

C. Answer the questions:

Question 1.
How do we see the earthworm often?
Answer:
We see the earthworm often as filth.

Question 2.
What does it give to the farmer?
Answer:
It gives the farmer a reward of wealth.

Question 3.
Why don’t we use chemicals?
Answer:
We don’t use chemicals because it will harm the soil (the earth).

Question 4.
How do we work?
Answer:
We work without thinking to harm anyone.

Let us Know:

Past Continous Tense (கடந்த கால தொடர் நிலை):

Continuous tense is a category of verb tenses. Here we will see the past continuous tense.
You all know forms of verbs. Those are
தொடர்நிலை காலம் என்பது கால வகைகளில் ஒரு வகை. இங்கு நாம் கடந்த கால தொடர்நிலை பற்றி காண்போம்.
வினைச்சொற்களின் வகைகள் நாம் அறிந்ததே. அவையாவன:

The present participle form is used in past continuous tense with auxiliaries was and were. Come let us use it.

In the above examples you can see, the main action is in present participle form for all the subjects, and the
auxiliary alone changes.
மேற்கண்ட எடுத்துக்காட்டுகளில், நிகழ்கால எச்ச வினையோடு, துணை வினைச் சொற்கள், subject-ஐ பொறுத்து
மாறுகின்றன.

‘was’ is used for I, he, she, and it. [I, he, she, it so ‘was’]
‘were’ is used for you, we, and they. [you, we, they -es. ‘were’]

Give the correct verb form for the following sentences:

Question 1.
I _______ (read) the poem.
Answer:
was reading

Question 2.
They _______ (write) the poem.
Answer:
were writing

Question 3.
It _______ (go) to Delhi.
Answer:
was going

Question 4.
she _______ (draw) a picture.
Answer:
was drawing

Question 5.
We _______ (eat) fruits.
Answer:
were eating

Question 6.
He _______ (watch) movie.
Answer:
was watching

Question 7.
You _______ (make) lunch.
Answer:
were making

Let us see when to use the past continuous tense:

1. At some point in the past.
   I was writing my homework at 5 PM yesterday.
   
2. Parallel Actions.
   What was your brother doing then?
   When I was writing my homework, he was watching TV.
   
3. Interrupted action in the past.
   Yes, when I entered his house, his mother was reading newspaper.
   

Write what they were doing at 5 o clock yesterday?
(நேற்று 5 மணிக்கு இவர்கள் என்ன செய்து கொண்டு இருந்தார்கள்?)

Question 1.
I _______ cricket with my friends.
Answer:
was playing

Question 2.
My mother _______ TV.
Answer:
was watching

Question 3.
We _______ mango.
Answer:
were eating

Question 4.
My friends _______ their bicycles.
Answer:
were riding

Question 5.
Mohan _______ a letter
Answer:
was writing

Question 6.
The bell _______ loudly.
Answer:
was ringing

See and write what they were doing:

Question 1.
While I was writing,
he _______.
Answer:
was sleeping

Question 2.
While the boy was playing,
the girl _______.
Answer:
was reading

Question 3.
While my mother was cooking,
my father _______.
Answer:
was chopping

Future continuous Tense (எதிர்கால தொடர் நிலை):

Now, we are going to see the future continuous tense. You all know forms of verbs. Those are;

The same present participle form is used in future continuous tense with auxiliary will be. Come let us use it.
நிகழ்கால எச்சவினையே எதிர்கால தொடர்நிலையில் will be உடன் சேர்த்து பயன்படுத்தப்படுகிறது.

In the above examples you can see, the main action is in present participle form and the auxiliary is ‘will be’ for
all the subjects.

Give the correct verb form for following sentences:

Question 1.
I _______ (wait) for you.
Answer:
will be waiting

Question 2.
They _______ (come).
Answer:
will be coming

Question 3.
It _______ play.
Answer:
will be playing

Question 4.
She _______ (swim).
Answer:
will be swimming

Question 5.
we _______ (drink).
Answer:
will be drinking

Question 6.
He _______ (do).
Answer:
will be doing

Question 7.
You _______ (take) leave.
Answer:
will be taking

How to use the future continuous tense? (எதிர்கால தொடர்நிலையை எப்படி பயன்படுத்துவது?)

I will be travelling on a bus by this time tomorrow.

My friends will be playing but I am working here.

Uma’s family is going on holiday. Write about what they will be doing there.
(உமாவின் குடும்பம் விடுமுறைக்கு செல்கிறார்கள். அவர்கள் அங்கே என்ன செய்து கொண்டிருப்பார்கள் என எழுதுக.)

1. Uma will be swimming.
   
2. Her brother will be playing.
   
3. Her brother will be climbing.
   
4. Her father will be playing music.
   
5. Her mother will be catching fish.
   
6. Her brother will be taking photographs.
   

Past Continuous to Future Continous (கடந்தகால தொடர் நிலையை எதர்கால தொடர்நிலையாக மாற்றுதல்):

Change the sentences from past continuous to future continuous:

Question 1.
She was waiting for bus.
Answer:
She will be waiting for bus.

Question 2.
They were going to Coimbatore.
Answer:
They will be going to Coimbatore

Question 3.
Suresh was playing chess.
Answer:
Suresh will be playing chess

Question 4.
Rafiq was eating breakfast.
Answer:
Rafiq will be eating breakfast

Question 5.
Prasanth was reading newspaper.
Answer:
Prasanth will be reading newspaper.

Future Continuous to Past Continuous (எதிர்கால தொடர் நிலையை கடந்தகால தொடர்நிலையாக மாற்றுதல்):

Change the sentences from future continuous to past continuous:

Question 1.
I will be speaking to her.
Answer:
I was speaking to her.

Question 2.
Lucy will be getting ready.
Answer:
Lucy was getting ready

Question 3.
The train will be arriving on the 2nd platform.
Answer:
The train was arriving on the 2nd platform

Question 4.
We will be sleeping on terrace.
Answer:
We were sleeping on terrace

Question 5.
It will be raining heavily.
Answer:
It was raining heavily.

Let us Listen:
Dialogue :

Kothai: Hai Akshaya, how are you?
Akshaya: Hello Kothai I am fine and what about you?
Kothai: I am also fine, okay meet my brother Varun.
Akshaya: Nice to meet you, Varun.
Varun: Nice to meet you too.
Akshaya: What are you studying, Varun?
Varun: I am studying 2nd standard.
Kothai: He is here to play kho-kho with us.
Akshaya: Oh! He is always welcome. I take him on my team.

Circle yes or no to the following:

Question 1.
Three persons are involved in the dialogue.
Answer:
Yes

Question 2.
Varun is studying 4th standard.
Answer:
No

Question 3.
Akshaya is Varun’s sister.
Answer:
No

Question 4.
They play Kho-Kho.
Answer:
Yes

Question 5.
Varun plays in Kothai team.
Answer:
No

Let us Speak:

See how they speak at this situation and practice as if you were in that situation:

Son: Ma… I am at home. Where are you?
Mother: I am in the kitchen.
Son: I am so hungry. What is there to eat?
Mother: I have made your favorite kozhukattai.
Son: Wow! Where is it? Where is kozhukattai?
Mother: It is there. But you look dirty, go and freshen up.
Son: I wash my hands later. first, you give it to me.
Mother: No! Go and change your uniform.
Son: Ma, I have changed my uniform. Now give me the delicious kozhukattai.
Mother: Good boy, now you can have it.
Son: The kozhukattai is yummy. Thank you ma.
Mother: You are welcome.

5th English Guide Farmer’s Friend Additional Questions and Answers

Question 1.
What does the earthworm give to the soil?
Answer:
The Earthworm gives good health to the soil.

Question 2.
How does the earthworm work?
Answer:
The earthworm ploughs the soil before the farmer.

Question 3.
Where does earthworm toil?
Answer:
The earthworm toils on fishing hooks.

Question 4.
Who shies to show his looks?
Answer:
The earthworm shies to show his looks.

Question 5.
What is the moral of the poem?
Answer:
Be humble like the earthworm and don’t think to harm anyone.

Write the past continuous tense for the following:

Question 1.
While I was reading the essay, my sister _______ (write) in a notebook.
Answer:
was writing

Question 2.
While our teacher was teaching the lesson, we _______ (listen).
Answer:
we’re listening

Question 3.
While the doctor was giving an injection, the child _______ (cry).
Answer:
was crying

Question 4.
When I saw them last evening, they _______ (watch) on the TV.
Answer:
were watching

Question 5.
We _______ (talk) about all sorts of things.
Answer:
were.

Write the future continuous tense for the following:

Question 1.
He _______ (come) soon.
Answer:
will be coming

Question 2.
She _______ (plan) about her studies.
Answer:
will be planning

Question 3.
They _______ (make) preparations for their exams.
Answer:
will be making

Question 4.
She _______ (help) you.
Answer:
will be helping

Question 5.
You _______ (get) your salary on 10th only.
Answer:
will be getting

Change the sentences from past continuous to future continuous:

Question 1.
He was writing a letter.
Answer:
He will be writing a letter

Question 2.
She was driving her car.
Answer:
She will be driving her car

Question 3.
The dog was barking at them.
Answer:
The dog will be barking at them

Question 4.
He was taking selfies at the function.
Answer:
He will be taking selfies at the function

Question 5.
It was raining yesterday.
Answer:
It will be raining tomorrow

Change the sentences from future continuous to past continuous:

Question 1.
She will be washing her clothes.
Answer:
She was washing her clothes

Question 2.
He will be decorating his room.
Answer:
He was decorating his room

Question 3.
The children will be laughing at his comedy speech.
Answer:
The children were laughing at his comedy speech

Question 4.
You will be talking to him.
Answer:
You were talking to him

Question 5.
They will be abusing us.
Answer:
They were abusing us

Farmer’s Friend Summary in English and Tamil

Often seen as filth.
But gives the soil good health
To reward the farmer with wealth.

விவசாயியின் நண்பன்
ஆனால் மண்ணுக்கு நல்ல ஆரோக்யத்தைத் தருகிறது.
விவசாயிக்குஅழுக்குடன் அடிக்கடி காணப்படுகிறது
செல்வம் வெகுமதியளிக்கிறது.

Ploughs the soil before farmer.,
Use not the chemicals to harm her .
Please praise our mother land’sarmour.

விவசாயிக்கு முன்பே நிலத்தை உழுகிறது
இரசாயனத்தைப் பயன்படுத்தி நிலமங்கைக்கு கேடு விளைவிக்காமல்.
நமது அன்னை பூமியின் கவசத்தை தயவுசெய்து பாராட்டுங்கள்.

Shy to show his looks.
Toils often on fishing hooks
To give the fisher something to cook.

விவசாயியின் நண்பன்
தனது தோற்றத்தைக் காண்பிக்க
மீன்பிடி தூண்டிலில் அடிக்கடி போராடுகிறது.
மீன்பிடிப்பவருக்கு சமைக்க சிலவற்றைக் கிடைக்கக் செய்கிறது.

Be humble like a worm
Think no one to harm
You will be free to spread your charm.

ஒரு (மண்) புழுவைப் போல பணிவாக இருங்கள்
யாருக்கும் கேடு செய்ய நினைக்காதீர்கள்
உங்கள் அழகை எவ்வித தடையுமின்றி நீங்கள் பரப்புவீர்கள்.

Farmer’s Friend Glossary:

Armour – Shield (கவசம்)
Charm – Delight attraction, appeal (வசீகரம்)
Filth – Dirt,ugly (அழுக்கு , அசிங்கம்)
Harm – Making physical injury (காயப்படுத்துதல், கேடு விளைவித்தல்)
Hook – A curved or sharply bent device (வளைந்த கூரான கொக்கி)
Humble – Not proud (பணிவு, தாழ்மை )
Often – Frequently (அடிக்கடி)
Ploughs – Tills (உழுதல்)
Praise – Compliment (பாராட்டுதல்)
Reward – Pay (வெகுமதியளித்தல்)
shy – reserve, diffidence (கூச்சம்)
spread – disseminate (பரப்புதல்)
toils – work extremely hard (கடினமாக உழைத்தல் / போராடுதல்) ‘
worm – soft-bodied legless invertebrate (புழு)

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide Pdf Term 2 Chapter 2 Water Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Science Solutions Term 2 Chapter 2 Water

Samacheer Kalvi 5th Science Guide Water Text Book Back Questions and Answers

Evaluation

I. Choose the correct answers:

Question 1.
Which of the following microorganisms causes waterborne diseases?
a) Bacteria
b) Virus
c) Protozoa
d) All
Answer:
(d) All

Question 2.
Water is present in huge quantities as vapor and clouds in the
a) sky
b) earth
c) atmosphere
d) rain
Answer:
(c) Atmosphere

Question 3.
________ water is free from suspended impurities.
a) Sea
b) Well
c) River
d) Underground
Answer:
(d) Underground

Question 4.
________ of water is in oceans and seas.
a) 97%
b) 87%
c) 47%
d) 77%
Answer:
(a) 97%

Question 5.
________ is an artificial process of converting seawater into freshwater.
a) Distillation
b) Decantation
c) Reverse Osmosis
d) Desalination
Answer:
(d) Desalination

II. Fill in the blanks:

Question 1.
The accumulated underground water comes out in the form of ________.
Answer:
A Spring

Question 2.
The process of changing water into water vapor by the heat of the Sun is called ________.
Answer:
Evaporation

Question 3.
Rainwater forms streams and ________ which join together to form rivers.
Answer:
springs

Question 4.
The process of collecting and storing rainwater is called ________.
Answer:
Rainwater harvesting

Question 5.
Cholera is caused by ________.
Answer:
Bacteria (Vibrio Cholerae)

III. Match the following:

Answer:

IV. Answer briefly:

Question 1.
Write down the sources of water.
Answer:

• River water and lake water
• Seawater
• Well water
• Springwater
• Underground water

Question 2.
What is desalination?
Answer:
Desalination is an artificial process of converting saline water (seawater) into freshwater.

Question 3.
What are the processes involved in the water cycle?
Answer:
Water cycle consists of the following four processes:

• Evaporation
• Condensation
• Precipitation
• Flowing back to oceans.

Question 4.
What are reservoirs?
Answer:
A reservoir is an artificial/man-made lake, where water is stored. Most reservoirs are formed by constructing dams across rivers. A reservoir can also be formed from a natural lake.

Question 5.
How can we prevent dengue fever?
Answer:
We can prevent dengue fever by the following steps:

• Spray the house with anti-mosquito spray.
• Try to wear clothes that cover skin areas.
• Close the doors and windows during early morning and evening.
• Do not leave stagnant water lying anywhere in and around the house.

V. Answer in detail:

Question 1.
Write the advantages of rainwater harvesting.
Answer:
Advantages:

• Rainwater harvesting can reduce flooding in the cities.
• Rainwater harvesting can reduce top soil loss.
• Groundwater level can be increased.
• Groundwater can be conserved.
• It can improve plant growth.

Question 2.
How can we prevent waterborne diseases?
Answer:

• Good personal hygiene should be practiced and basic sanitation should be improved.
• Chlorinated and boiled water should be used for drinking.
• Drink boiled or pasteurized milk.
• Dispose of infectious wastes properly.

Samacheer Kalvi 5th Science Guide Water Additional Questions and Answers

I. Choose the correct answer:

Question 1.
The origin of river is ______.
(a) plains
(b) mountains
(c) valley
(d) ocean
Answer:
(b) Mountains

Question 2.
______ is called saline water.
(a) Seawater
(b) River water
(c) Well water
(d) Underground water
Answer:
(a) Seawater

Question 3.
______ of the world population does not get safe drinking water.
(a) 24%
(b) 25%
(c) 26%
(d) 27%
Answer:
(b) 25%

Question 4.
_________ million people die worldwide every year due to diarrhoeal diseases.
(a) 1
(b) 2
(c) 3
(d) 4
Answer:
(c) 3

II. Fill in the blanks:

Question 1.
_________ of the total freshwater is frozen as ice caps and glaciers.
Answer:
68.7%

Question 2.
Agriculture consumes around ______ of the available freshwater.
Answer:
70 %

Question 3.
March 22 ispbserved as _______.
Answer:
World Water Day

Question 4.
Contamination of water bodies by human activities is called _______ pollution.
Answer:
water

Question 5.
_______ mosquitoes also transmit chikungunya and yellow fever.
Answer:
Aedes

III. Match the following:

Answer:

IV. Answer briefly:

Question 1.
Why is underground water free from suspended Impurities?
Answer:
Underground water is free from suspended impurities because it is filtered by nature, as it passes through several layers of the soil.

Question 2.
What are balls of ice?
Answer:
In freezing conditions, water falling from the sky becomes snow or hail. Hailstones are balls of ice.

Question 3.
Define – Freshwater.
Answer:
Water which is obtained naturally from ice sheets, ice caps, glaciers, icebergs, ponds, lakes, rivers, streams, and underground are called freshwater.

Question 4.
Write the advantages of Wastewater treatment.
Answer:

• Waste water treatment ensures that the environment is clean.
• There is no water pollution.
• It prevents waterborne diseases.
• It ensures that there is adequate water for irrigation.

Question 5.
What are the major sources of Water pollution?
Answer:
The major sources of water pollution are industrial waste, sewage, domestic waste, chemical fertilizers and insecticides, synthetic detergents, and oil spills.

Question 6.
Name the Causative Agents and write the Symptoms for Dengue Fever and Sine Flu.
Answer:

• Dengue fever:- Virus (Flavi Virus) – High fever, Severe headache, Muscle and joint pain, Vomiting with blood, and Stomach pain.
• Swine Flue:- Virus (Influenza) – Infection in respiratory tracks, Indigestion, Nasal secretions.

V. Answer In detail:

Question 1.

Write a short note on Farm Ponds.
Answer:

• A farm pond is a structure dugout on the Earth. It is usually square or rectangular
  in shape.
• Rainwater is stored in it for irrigation purposes. It is surrounded by a small bund, which
  prevents erosion on the banks of the pond.
• The size and depth of the pond depending on the type of the soil, water requirements of the
  farmer, its uses, and the cost of excavation.
• Water is conveyed to the fields manually, by pumping, or by both.

Question 2.
write the names of Causative Agents and the symptoms for waterborne diseases.
Answer:

Name of the Waterborne Diseases	Causative Agents	Symptoms
Diarrhoea	Bacteria and Parasites (Salmonella, Shigella and E.coli)	Indigestion, Sweating, Abdominal pain, Vomiting, Stomach cramps
Dysentery (Shigellosis)	Bacteria (Shigella)	Blood in stool, Indigestion, Vomiting, Dehydration, Fever, Weight loss
Typhoid Fever	Bacteria (Salmonella)	High fever, Headache, Stomach pain, Muscle weakness, Weight loss
Cholera	Bacteria (Vibrio Cholerae)	Severe diarrhea, Vomiting, Dehydration
Hepatitis -A	Virus (Hepatitis)	Vomiting, Fever, Dark urine, Itching, Yellow skin and eyes, Lack of appetite
Hepatitis – E	Virus (Hepatitis-E)	Vomiting, Fever, Dark urine, Itching, Yellow skin and eyes, Lack of appetite

Question 3.
How is Dengue fever spread? What are the symptoms?
Answer:
Dengue is a viral disease spread by Aedes female mosquitoes that bite during day time.
They breed in stagnant water found in containers and old tyres.
Symptoms:

• Symptoms may include high fever, severe headache, muscle, and joint pain, and a characteristic skin rash.
• Symptoms of dengue fever typically begin three to fourteen days after infection.
• Deficiency of platelets in blood.
• Intense stomach pain.
• Regular vomiting with blood.

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide Pdf Term 1 Chapter 4 Science In Everyday Life Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Science Solutions Term 1 Chapter 4 Science In Everyday Life

Samacheer Kalvi 5th Science Guide Science in Everyday Life Text Book Back Questions and Answers

Evaluation

I. Choose the correct Answer:

Question 1.
Blue appearance of the sky is due to ________ of light.
a) reflection
b) refraction
c) interference
d)scattering
Answer:
d) scattering

Question 2.
Who is known as Missile Man of India?
a) Sir CM. Raman
b) Dr. A.P.J. Abdul Kalam
c) Dr. M.S. Swaminathan
d)Ramanujan
Answer:
b) Dr. A.P.J. Abdul Kalam

Question 3.
An example for reversible change is ________.
a) melting of ice
b) burst of balloon
c) burning paper
d) change of milk into curd
Answer:
a) Melting of ice

Question 4.
Chemical reactions are example for ________ .
a) reversible change
b) irreversible change
c) both of them
d) none of them
Answer:
b) Irreversible change

Question 5.
Which of the following is not an organic waste?
a) Flowers
b) Vegetables
c) Fruits
d) Battery
Answer:
d) Battery

II. Fill in the blanks:
Question 1.
The book Wings of fire was written by _______.
Answer:
Dr. A.P.J. Abdul Kalam

Question 2.
A stretched rubber band comes back to normal shape. It is an example for _______.
Answer:
Reversible changes

Question 3.
Most of the physical changes are _______ changes.
Answer:
Reversible changes

Question 4.
Newspaper is a _______ waste.
Answer:
Recyclable waste

Question 5.
Wastes from house and apartments are called _______ waste.
Answer:
Household

III. Match the following:

Answer:

1. e
2. d
3. a
4. b
5. c

IV.Circle the odd one:

Question 1.
a) Melting
b) Freezing
c) Boiling
d) Cooking
Answer:
d) Cooking

Question 2.
a) Boiling
b) Burning
c) Cooking
d) Rusting of Iron
Answer:
a) Boiling

Question 3.
a) Vegetables
b) Flowers
c) Fruits
d) Chemicals
Answer:
d) Chemicals

Question 4.
a) Paper
b) Glass
c) Metals
d) Paints
Answer:
a) Paper

V. Answer in brief:

Question 1.
Sky appears blue in colour. Why?
Answer:
The sunlight is scattered by the gases and particles present in the air. The white light we see is composed of different colours such as violet, indigo, blue, green, yellow, orange and red (VIBGYOR). Among. these colours, blue is scattered more. Because of this reason, sky appears blue most of the time.

Question 2.
What is reversible change?
Answer:
Changes which can be reversed are called reversible change.
Eg: melting of ice.

Question 3.
Differentiate reversible and irreversible changes.
Answer:

Reversible Change	Irreversible Change
A substance can turn to its original state.	A substance cannot change to its original state.
The chemical properties of the substance do not change.	The chemical properties of the substance will change.
Most of the physical changes are reversible.	All chemical changes are irreversible.

Question 4.
What are the different types of waste?
Answer:
Wastes are of two types, they are;

• Household wastes.
• Wastes from school.

Question 5.
Write a note on e-waste.
Answer:
e – wastes are electronic waste of computer parts, electronic materials, cell phone parts, CFL bulb. Every year 40 million tons of electronic waste is generated world wide, e-waste comprises 70% of our overall toxic waste. e-waste contains hundreds of substances, of which many are toxic.

Question 6.
Name the scientists from Tamil Nadu.
Answer:

• Dr M.S. Swaminathan.
• Venkataraman Radhakrishnan.
• Sir. C.V. Raman.
• Srinivasa Ramanujan.
• Dr. A.P.J. Adbul Kalam.

VI. Answer in detail:

Question 1.
Write about different household wastes.
Answer:
Different types of household wastes are :
a) Organic waste: Kitchen wastes, vegetables, flowers, leaves, fruits.
b) Toxic wastes: Old medicines, paints, chemicals, bulbs, spray cans, fertilizers, pesticides, containers, batteries, shoe polish.
c) Recyclable wastes: Paper, glass, metals, plastics.
d) Solid wastes: Cloths soiled with blood and other body fluids.
e) e-wastes: Computer parts, electronic materials, cell phone parts, CFL bulbs.

Question 2.
Explain the need for waste disposal.
Answer:
Waste management is needed for the following reasons.

a) To control pollution: Various pollution like water pollution, air pollution and soil pollution can be avoided.

b) To conserve natural resources: Waste disposal is important for the conservation of our environmental resources like forest, minerals and water.

c) To control spread of diseases: Spread of infectious diseases can be controlled.

d) Recycle for further use: Wastes can be recycled to get products for further use.

Question 3.
How can you reduce waste in your school environment?
Answer:
The following practices will helpful to reduce wastes in school environment.

• Use reusable and recyclable bags and containers.
• Avoid one-time use items and use items which can be used permanently.
• Segregate wastes into bio-degradable and non-biodegradable items and hand over them to the municipal and corporation people who collect them.
• Do not throw away your wastes everywhere, put them in dustbins and dispose of them properly.
• Don’t waste food. Waste food in schools can be collected and used to feed cattle.
• Organic wastes can be converted into manures.

Samacheer Kalvi 5th Science Guide Science In Everyday Life Additional Questions and Answers

I. Choose the Correct Answer:

Question 1.
Which among the following is the toxic waste?
a) Vegetable waste
b) Old medicines
c) Kitchen waste
d) Leaves waste
Answer:
b) Old medicines

Question 2.
Which is reversible change?
a) Raw egg to boiled egg
b) Ice cube to water
c) Burning paper
d) All the above
Answer:
b) Ice cube to water

Question 3.
Who is referred as the people’s president?
a) Sir C.V.Raman
b) Ram Nath Kovoind
c) A.P.J.Abdul Kalam
d) None of the above
Answer:
c) A.P.J.Abdul Kalam

Question 4.
Sir C.V.Raman won the Nobel prize for his work in _______.
a) Green revolution
b) Composite numbers
c) Structure of ribosome
d) Scattering of light
Answer:
d) Scattering of light

Question 5.
National Science Day is celebrated on _______.
a) 27th February
b) 28th February
c) 28th March
d) 27th March
Answer:
b) 28th February

II. Fill in the blanks:

Question 1.
Water changes into ice on cooling is an example of ________.
Answer:
Reversible change

Question 2.
change is the _______ of a substance from one form to another.
Answer:
Transition

Question 3.
A.P.J Abdul Kalam was an _______.
Answer:
Aeronautical Scientist.

Question 4.
Changes which cannot be reversed are called _______.
Answer:
Irreversible changes

Question 5.
Most of the physical changes are _______ change.
Answer:
Reversible

Question 6.
Dissolving sugar in water is a _______ change.
Answer:
Reversible

Question 7.
Paper, LPG, CNG petrol etc, are _____ substances.
Answer:
Inflammable

Question 8.
Water on _______ changes to ice and on _______ comes back to water.
Answer:
cooling, heating

III. Pick out the odd one out:

Question 1.
a) Kitchen waste
b) Vegetables
c)Flowers
d)Fertilizers
Answer:
d) Fertilizers

Question 2.
a)Piece of bread
b)Polythene bag
c) Broken glass
d) Blades.
Answer:
a) Piece of bread

Question 3.
a) Reduce
b) Reuse
c) Recycle
d) Disposal
Answer:
d) Disposal

Question 4.
a) Milk to curd
b) Raw egg to boiled egg
c) Ice cube to water
d) Grain to flour.
Answer:
c) Ice cube to water

IV. Match the following:

Answer:

1. b
2. a
3. d
4. c

V. Say True or False:

Question 1.
Evaporation of water is a reversible change.
Answer:
True

Question 2.
Burning of the paper is an irreversible change.
Answer:
True

Question 3.
Rusting of iron is a reversible change.
Answer:
False

Question 4.
Sky appears blue at sunrise.
Answer:
False

Question 5.
Sunlight is scattered by the gases.
Answer:
True

Question 6.
Blue has more scattered capacity.
Answer:
True

VI. Answer in brief:

Question 1.
Why does the sky appear blue?
Answer:
Sunlight is scattered by the gases and particles present in the air. The white light we see is composed of different colours such as violet, indigo, blue, green, yellow, orange and red (VIBGYOR). Among these colours, blue is scattered more. Because of this reason, sky appears blue most of the time.

Question 2.
Name the two types of changes.
Answer:
Changes can be classified as

1. Reversible
2. Irreversible changes.

Question 3.
What are reversible changes?
Answer:
Changes which can be reversed are called reversible changes.

Question 4.
What are irreversible changes?
Answer:
Irreversible changes are also known as permanent changes. Processes like heating, burning, mixing and powdering cause permanent changes.

Question 5.
What is meant by waste?
Answer:
Waste is any substance which is discarded after primary use. It is worthless, defective and of no use. They are unwanted and undesirable materials.

Question 6.
What are the 3R’s used to save the environment?
Answer:
The 3R’s are used to save the environment are Reduce, Recycle, and Reuse.

VII. Answer in detail:

Question 1.
Write the differences between reversible and irreversible changes.
Answer:
Differences between reversible and irreversible changes are:

Reversible Change	Irreversible Change
A substance can turn to its original state.	A substance cannot change to its original state.
The chemical properties of the substance do not change.	The chemical properties of the substance will change.
Most of the physical changes are reversible.	All chemical changes are irreversible.

Question 2.
What is household waste and write its classification?
Answer:
Wastes from home are known as household waste. Solid wastes disposed of home and apartments comprise of garbage and rubbish (bottles, cans, clothing, composts, disposable items, food packings, newspapers, magazines, and trimmings). We can classify the household wastes as below.

Organic wastes: Kitchen wastes, Vegetables, Flowers, Leaves, Fruits.

Toxic wastes: Old medicines, Paints, Chemicals, Bulbs, Spray cans, Fertilizers, Pesticide containers, Batteries, Shoe polish.

Recyclable wastes: Paper, &lass, Metals, Plastics.

Solid wastes: Cloths soiled with blood and other body fluids.

e-wastes: Computer parts, Electronic materials, Cell phone parts, CFL bulbs.

Question 3.
How can we protect our environment?
Answer:

• Use reusable and recyclable bags and containers.

• Avoid one-time use items and use items which can be used permanently.
• Segregate wastes into bio-degradable and non-biodegradable items and hand over them to the municipal and corporation people who collect them.
• Do not throw away your wastes everywhere. Put them in dustbins and dispose of them properly.
• Don’t waste food. Waste food in schools can be collected and used to feed cattle.
• Organic wastes can be converted into manures.

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th English Guide Pdf Term 1 Prose Chapter 2 Trip to My Grandparents Village Text Book Back Questions and Answers, Summary, Notes.

Tamilnadu Samacheer Kalvi 5th English Solutions Term 1 Prose Chapter 2 Trip to My Grandparents Village

5th English Guide Trip to My Grandparents Village Text Book Back Questions and Answers

In-Text Question (Think):

Question 1.
Is TV and video game the only way to pass time? Can we do something else?
Answer:
Time is a non-renewable resource. Many people wasted their time playing video games and they regretted it in their later stage: Instead of playing video games, we can spend our time playing outdoor games, learning to play musical instruments like guitar etc., learning photography, painting etc.

Television is an easy and cheap source of entertainment. By watching the news, we can improve our general knowledge. Watching TV too much is not good for our health. It contributes to some health issues like obesity, sleep difficulties, etc.

Let us Understand:

A. Match the following:

1. cuckoo	a. blows
2. breeze	b. sings
3.  river	c. swims
4.  fish	d. flows

Answer:

1.cuckoo	a. sings
2. breeze	b. blows
3. river	c. flows
4. fish	d. swims

B. Answer the following questions:

Question 1.
How did Santhosh record his diary?
Answer:
Santhosh recorded his diary using his mother’s phone.

Question 2.
Name some of the activities that the village children were doing on their vacation.
Answer:
Playing with a tyre and a stick, milking cows, breaking groundnut pods and piling them, splashing in the pond, climbing to the top of a tamarind tree, playing hide and seek are the activities that the village children were doing on their vacation.

Question 3.
Why did Santhosh forget to watch television or play video games?
Answer:
Santhosh ‘trip to his grandparents’ home was so enjoyable to him. So he forgot to watch television or play video games.

Question 4.
Did Santhosh enjoy his morning walk? How do you know?
Answer:
Yes, Santhosh enjoyed his morning walk. He enjoyed the cool breeze and he felt that the air was also filled with the sweet sound of birds.

Question 5.
How did Santhosh spend his time when he went to the river?
Answer:
As he could not swim, Santhosh sat on a big smooth rock. He watched his friends swam like experts. He saw the pebbles in the riverbed and colourful fish swim by.

Question 6.
How did Santhosh know that the river was clean?
Answer:
The river is so clean as Santhosh could see the pebbles in the riverbed and colourful fish swim by.

Let us Build:

Let us learn some more tips to change singular to plural.
ஒருமையைப் பன்மையாக மாற்றுவதைப் பற்றி இங்கு காண்போம்.

Try this:

Question 1.

Answer:

1. Change -f and -fe, into -ves.

2. By changing their vowels, such as oo to ee or an to en.

3. Irregular plurals

4. Some nouns are identical in both the singular and the plural forms. Many of these are names of animals.

5. Add es for some words ending with o.

A. Look at the picture and tick (✓) the correct plural word:

Question 1.

Answer:

B. Write the plural form:

Question 1.

Answer:
Leaves

Question 2.

Answer:
Mangoes

5th English Guide Earth, The Desolated Home Additional Questions and Answers

Question 1.
Where did Santhosh go for his vacation?
Answer:
Santhosh went to his grandparents’ village, called Sirumalai.

Question 2.
How was the roadside look like?
Answer:
There were numerous trees with yellow flowers on both sides of the road.

Question 3.
What was the use of scarecrows?
Answer:
The scarecrows had managed to scare away the crows in the fields.

Question 4.
Name the birds that were seen in the paddy fields.
Answer:
Many white cranes were seen in the green paddy fields.

Question 5.
Write down the names of Paavai’s friends.
Answer:
Amir, Peter, and Umaiyal were Paavai’s friends.

Question 6.
Who took Santhosh to the river?
Answer:
Santhosh’ mother and his aunties took him to the river for a refreshing bath.

Write the plural form:

Question 1.
= ________
Answer:
Chairs

Question 2.
  = ________
Answer:
Boxes

Question 3.
= ________
Answer:
Spectacles

Question 4.
= ________
Answer:
Donkeys

Question 5.
= ________
Answer:
Radios

Question 6.
= ________
Answer:
Books.

Trip to My Grandparents Village Summary in English and Tamil

It is summer. Santhosh’ vacation has started. His parents are going to Sirumalai, his parents’ village. Santhosh is excited. He records an audio diary on his mother’s phone. He records all his feelings during the visit. Later, he writes down in his diary what he had recorded. Let’s read his diary to know his experiences during this visit.

இது கோடைக்காலம். சந்தோஷின் விடுமுறை | தொடங்கிவிட்டது. அவனது பெற்றோரின் கிராமமான சிறுமலைக்கு அவனது பெற்றோர் போகிறார்கள். சந்தோஷ் உற்சாகமாக ப’ இருந்தான். அவனது அம்மாவின் போனில் ஒலி வடிவில் நிகழ்வுகளை பதிவு செய்கிறான். அவனது பயணத்தின் போது அவனது எல்லா உணர்வுகளை பதிவு செய்கிறான். பின்னர் தனது டைரியில், தான் பதிவு செய்திருந்ததை எழுதிக் கொள்கிறான். அவனது விஜயத்தின் போது, அவனது அனுபவங்களை அறிந்து கொள்ள, அவனது டைரியை நாம் படிக்கலாம்.
28

10th April: 10 ஏப்ரல் :
I am very eager to visit my grand parents’ village. I will meet my grand parents and cousins. I have packed my clothes and tab for playing video games. We will be travelling in a bus. I am so excited.

என் தாத்தா பாட்டியின் கிராமத்திற்குப் போக நான் வெகு ஆர்வமாக இருக்கிறேன். அங்கு என் தாத்தா பாட்டியையும், உறவினர்களையும் நான் சந்திப்பேன். வீடியோவில் விளையாட்டுக்களை விளையாட ‘டேப்’ எனப்படும் கருவியையும், எனது
உடைகளையும் எடுத்துக் கொண்டேன். நாங்கள் ஒரு பேருந்தில் பயணிப்போம். நான் மிகவும் உற்சாகமாக இருக்கிறேன்.

11th April:11 ஏப்ரல்:
Today we are travelling. Though it is summer, the weather is pleasant in the morning. There are numerous trees with yellow flowers on both sides of the road. There is greenery all around. There are many white cranes in the lush green paddy fields. The scarecrows have managed to scare away the crows in the fields. There is no traffic, noise and air pollution in the village.

இன்று நாங்கள் பயணம் செல்கிறோம். கோடைக்காலமாக இருந்தாலும், காலையில் வானிலை இதமாக இருக்கிறது. சாலையின்
இருபுறங்களிலும் எண்ணற்ற மரங்கள் மஞ்சள் மலர்களுடன் உள்ளன. சுற்று வட்டாரம் முழுதும் பசுமையாக இருந்தது. பசுமையான நெல்வயல்களில் பல வெள்ளை கொக்குகள் இருந்தன. வயல்களில் காகங்களை பயமுறுத்தி விரட்ட மனித உருவ பொம்மைகள் இருந்தன. வாகனப் போக்குவரத்து, இரைச்சல், காற்று மாசு என்று எதுவும் கிராமத்தில் இல்லை.

I get off the bus and run to meet my grandparents. They are deliahted to see me. The house is surrounded by many big trees. There are a few jackfruit, mango, neem, banana, pomearanate and coconut trees. The trees have abundant fruits. My grandfather has plucked some ripe mangoes for me. The mangoes are so juicy and sweet.

நான் பேருந்திலிருந்து இறங்கி, என் தாத்தா பாட்டியைச் சந்திக்க ஓடினேன். அவர்கள் என்னைப் பார்த்ததில் பெரு மகிழ்ச்சியடைந்தனர். பல பெரிய மரங்கள் வீட்டைச் சூழ்ந்து இருந்தன. சில பலா, மா, வேம்பு, வாழை, மாதுளை, தென்னை மரங்கள் இருந்தன. மரங்களில் அதிக அளவில் பழங்களும் இருந்தன. சில பழுத்த மாம்பழங்களை என் தாத்தா எனக்காக பறித்தார். மாம்பழங்கள் மிகவும் சாறுடனும், சுவையுடனும் இருந்தன.

12th April: 12 ஏப்ரல் :
I have woken up early today. I am out for a walk in the morning. The cool breeze is pleasing. The coconut palms are swaying lazily. The farmers are already in their fields. Some of them are cutting the crops and some of them are threshing the paddy. The air is filled with the sweet sound of birds singing in the trees and the bushes. The cuckoo’s song is perhaps the most enchanting.

இன்று நான் சீக்கிரமாக எழுந்துவிட்டேன். காலையில் வெளியே நடைபயிற்சிக்காக.சென்றேன். குளிர்ந்த காற்று இதமாக இருந்தது.
தென்னை, பனை மரங்கள் சோம்பலுடன் அசைந்து கொண்டிருந்தன. விவசாயிகள் ஏற்கனவே அவர்களது வயல்களில் இருந்தனர். அவர்களில் சிலர் அறுவடை செய்தனர். சிலர் கதிர் அடித்தனர். மரங்களிலும், புதர்களிலும் இருந்த பறவைகளின் இனிமையான சத்தம், காற்றுடன் கலந்திருந்தது. குயிலின் பாட்டு மிகவும் மயங்க

When I come home, I freshen up and eat the tastiest breakfast in my life. Later, my grandmother introduces a girl, Paavai. She goes to the village school. She lives down the street. She is very eager to show me around the village. Paavai shows me how to play with a tyre and a stick. We happily run down the lanes balancing the tyre with a small stick. We stop to talk to Paavai’s friends, Amir, Peter and Umaiyal.

நான் வீட்டுக்கு வந்து, புத்துணர்வு பெற்று, என் வாழ்விலேயே சுவையான காலை உணவை சாப்பிட்டேன். பின்னர், பாவை என்ற ஒரு சிறுமியை என் பாட்டி என்னிடம் அறிமுகப்படுத்தினார். அவர் அங்கு கிராம பள்ளயில் படிக்கிறாள். அதே தெருவில் அவள் வாழ்கிறாள். எனக்கு கிராமத்தை சுற்றிக் காட்ட அவள் வெகு ஆர்வமாக இருந்தாள். ஒரு டயரையும், ஒரு தடியையும் கொண்டு எப்படி விளையாடுவது என அவள் காண்பித்தாள். சிறு தடியால் டயரை லாவகமாக ஒட்டிக் கொண்டு | நாங்கள் மகிழ்ச்சியுடன் தெருக்களில் ஓடினோம். பாவையின் நண்பர்களான அமீர், பீட்டர் மற்றும். உமையாள் ஆகியோரிடம் நாங்கள் பேசினோம்.

All children here too have their summer vacation. Amir is helping his father in milking their cows. He let me pat his black calf peter and Umaiyal are sitting with their grandmother breaking groundnut pods and piling them neatly. Later they will take the nuts to the village market to sell them. I help them for some time.

இங்கு எல்லா குழந்தைகளும் கோடை விடுமுறையை கொண்டாடினர். பசுக்களிடமிருந்து பால் கறப்பதற்கு அமீர் தன் தந்தைக்கு உதவியாக இருந்தான். அவனது கறுப்பு நிற கன்று குட்டியை 5C4025 தா பாivale c++ine + +oin தட்டிக் கொடுக்க என்னை அனுமதித்தான். பீட்டரும் உமையாளும் அவர்களது பாட்டியுடன் அமர்ந்தபடி வேர்க்கடலையின் மேல் தோலை உடைத்து, அதனை குவியலாக சேர்த்து வைத்தனர். பிறகு அவர்கள் வேர்க்கடலையை கிராம – சந்தைக்கு எடுத்துச் சென்று விற்றுவிடுவர். நானும் அவர்களுக்கு சற்று நேரம் உதவி செய்தேன்.

13th April:13 ஏப்ரல் :
Paavai takes me to the village pond There are many children splashing around in the pond. Some boys are climbing to the top of the tall tamarind tree. Girls are playing hide and seek near the big banyan tree.

கிராமத்தின் குளத்திற்கு பாவை என்னை அழைத்துச் சென்றாள். அந்த குளத்தில் பல குழந்தைகள் நீரில் விளையாடிக் கொண்டிருந்தனர். சில சிறுவர்கள் அங்கிருந்த உயரமான புளிய மரத்தின் உச்சிக்குச் செல்ல, மரத்தில் ஏறிக் கொண்டிருந்தனர். அங்கிருந்த பெரிய ஆலமரத்தின் அருகில் சிறுமிகள் கண்ணாமூச்சி’ விளையாடிக் கொண்டிருந்தனர்.

My mother and my aunties take me to the river for a refreshing bath. I play for some time in the cool water but I cannot swim. So, I sit on a smooth rock and watch my friends swim like experts. They talk and laugh a lot as they wash their clothes and dry their hair in the Sun. The river is so clean that I can see the pebbles in the riverbed and colourful fish swim by. I love the scenery.

என் அம்மாவும், என் அத்தைகளும் என்னை ஆற்றுக்கு அழைத்துச்சென்றனர், புத்துணர்வூட்டும் bia குளியலுக்காக. அந்த குளிர்ந்த நீரில் நான் சற்று நேரம் விளையாடினேன். ஏனெனில் என்னால் நீந்த முடியாது. ஆகவே, நான் ஒரு பெரிய வழுவழுப்பான பாறையின் மீது அமர்ந்து, எனது நண்பர்கள் (திறமைசாலிகளைப் போல) நீந்துவதை பார்த்துக் கொண்டிருந்தேன். அவர்கள் அதிகமாக பேசியபடியும், சிரித்தபடியும் இருந்தனர். அவர்கள் தங்கள் துணிகளை துவைத்தனர். சூரிய ஒளியில் தலைமுடிளை உலர்த்திக் கொண்டனர். அந்த ஆறு மிகவும் சுத்தமாக இருந்ததால், அங்கு கூழாங்கற்களையும், வண்ணமயமான மீன்கள் நீந்திச் செல்வதையும் என்னால் பார்க்க முடிந்தது. அந்த இயற்கைக் காட்சியை நான் விரும்பினேன்.

We are back to our home in the city. The trip to our grandparents home was so enjoyable. Those two days flew by so fast. I realised that during this stay. I had neither watched television nor played video games. I eagerly looking forward to our next visit.

சென்று வந்த பயணம் மிகவும் மகிழ்ச்சியைத் நான் டெலிவிஷன் பார்க்காததையும், வீடியோ விளையாட்டு விளையாடாததையும் உணர்ந்தேன். எனது அடுத்த பயணத்திற்காக நான் ஆவலுடன் எதிர்பார்த்து காத்திருக்கிறேன்.

Trip to My Grandparents Village Glossary:

Abundant – Plentiful (ஏராளமாக)
Crane – Large long-necked long-legged wading bird (கொக்கு )
Delighted – Happy (மகிழ்ச்சியடைதல்)
Eager – Keen (ஆர்வம்)
Enchanting – Attractive (மயங்க வைக்கிற)
Excited – Thrilled (உற்சாகமாக)
Experience – Knowledge or practical wisdom gained (அனுபவம் )
Expert – Well skilled (திறமைசாலி)
Feelings – General impressions/ emotions (உணர்வுகள்)
Later – Afterwards (பிறகு)
Lush – Plentiful (அதிகமாக)
Numerous – Great in number (எண்ண ற்ற)
Pebble – A kind of stone (கூழாங்கல்)
pile – Heap (up) (குவியல்)
pleasant – Nice (இனிமையான)
Pleasing – Giving pleasure (மகிழ்வூட்டும்)
Plucked – Pulled out (பறித்த ல்)
Pod – Shell (மேல் தோல்)
Pollution – Contamination (மாசு)
Pond – Tank/pool (குளம்)
Summer – The warmest season of the year (கோடை)
Surrounding – Encircled (சுற்றி சூழ்ந்த )
Swaying – Swinging (அசைந்தாடுதல்)
Threshing – Separating the grains (from plants) (கதிரடித்தல்)
Vacation – Holiday (விடுமுறை)

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide Pdf Term 3 Chapter 3 Air Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Science Solutions Term 3 Chapter 3 Air

Samacheer Kalvi 5th Science Guide Air Text Book Back Questions and Answers

Evaluation

I. Choose the correct answer:

Question 1.
Chlorofluorocarbon is used in
a) refrigerator
b) air conditioners
c) Both a & b
d) None
Answer:
(c) Both a & b

Question 2.
Which of the following gas is released by automobiles?
a) Carbon monoxide
b) Oxygen
c) Hydrogen
d) Nitrogen
Answer:
(a) Carbon monoxide

Question 3.
A wind mill is used to produce .
a) chemical energy
b) mechanical energy
c) electric energy
d) All of these
Answer:
(c) electric energy

Question 4.
Influenza is caused by
a) fungus
b) bacteria
c) virus
d) protozoa
Answer:
(c) virus

Question 5.
Height of mesosphere which lies after troposphere is
a) 70 to 75km
b) 75to 80 km
c) 80 to 85 km
d) 85to 90 km
Answer:
(c) 80 to 85 km

II. Fill in the blanks:

Question 1.
Second highest layer of Earth’s atmosphere is _______.
Answer:
Thermosphere

Question 2.
Releasing substances like chemical compounds into the atmosphere is known as _______.
Answer:
Air pollution

Question 3.
Airborne diseases can be caused by _______.
Answer:
Microorganisms

Question 4.
The _______ layer protects us from the harmful UV rays coming from the sun.
Answer:
Ozone

Question 5.
________ is used by plants as nitrates.
Answer:
Nitrogen

III. Match the following:

1. Troposphere	a. Satellite
2. Stratosphere	b. Ozone layer
3. Exosphere	c. Weather change
4. Thermosphere	d. Spacecraft
5. Mesosphere	e. Meteors

Answer:

1. Troposphere	a. Weather change
2. Stratosphere	b. Ozone layer
3. Exosphere	c. Satellite
4. Thermosphere	d. Space craft
5. Mesosphere	e. Meteors

IV. Answer briefly:

Question 1.
What are the different layers of atmosphere?
Answer:

• Atmosphere is divided into five different layers.
• The layers from the bottom upwards are called Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.

Question 2.
What is air pollution?
Answer:
The presence of harmful substances in the air which can have an adverse effect on living beings and the environment is called air pollution.

Question 3.
Name some of the airborne diseases.
Answer:
Diphtheria, Whooping Cough, and Tuberculosis are some of the common airborne diseases caused by bacteria.

Question 4.
What is global warming?
Answer:

• Air pollution results in the accumulation of carbon dioxide in the atmosphere.
• When gases like carbon dioxide are present in the atmosphere in a large amounts, they increase the atmospheric temperature.

Question 5.
Mention two ways of controlling air pollution.
Answer:

• Using public modes of transport can reduce the rate of pollution.
• By reducing the usage of fossil fuels for burning.

V. Answer in detail:

Question 1.
List the importance of air.
Answer:

• Air is important for all living organisms.
• Without air no life can exist on the Earth.
• We take in oxygen from the air and release carbon dioxide. :
• Plants in turn use carbon dioxide present in the air to produce their food.
• The gases such as oxygen, nitrogen, carbon dioxide, and hydrogen present in the air are important to us for many reasons.

Water Cycle:
Water vapour present in the air is important for the formation of water cycle.

Supplies Energy:

• We breathe oxygen present in the air and it is supplied to the cells in our body.
• Body cells burn the food molecules with the help of oxygen and produce energy.

Sound travels through air:
Sound travels from the point of generation to the listener through air.

Useful for plants:

• Nitrogen present in the air is useful for plants.
• The nitrogen in the atmosphere is converted into easily absorbable nitrates by plants with the help of some microbes.

Transport:

• Movement of air is called wind.
• This is helpful for the ships and boats to sail on the water. Airplanes and helicopters travel through air.

Sports:

• Paragliding and hang gliding are air sports and they are possible with the help of air.
• Other sports like windsurfing, kite surfing, and sailing are also possible with the help of air.

Parachutes and Hot air balloons:

• Parachutes and hot air balloons are used to land from above.
• In case of emergency, people use parachutes and come down slowly and safely with the help of air.

Wind energy:

• Air flows from a region of high pressure to low pressure.
• This flow of air at high speed is called wind.
• This wind is used to generate electric power with the help of windmills.

Question 2.
Explain any three airborne diseases.
Answer:
Common cold:

• Common cold is an infectious disease which affects the upper respiratory system like the nose and throat and it is easily spread.
• Symptoms of the common cold include cough, painful throat, running nose, and sometimes fever.
• Though many viruses can cause this, it is generally caused by Rhinovirus.

Influenza:

• Influenza is commonly found during childhood.
• It is caused by the virus, Myxo virus, and results in inflammation of nasal mucosa and pharynx.
• It is also known as flu.

Mumps:

• It is caused by Myxovirus parotitis and it affects the upper respiratory tract.
• Some of the common symptoms of mumps include fever, headaches, sore throat, and swelling of parotid glands which makes jaw movement difficult.

VI. Higher-order Thinking Questions:

Question 1.
If there is no atmosphere, what will be the condition of Earth?
Answer:
Without atmosphere means no life as there will be no oxygen which is essential for Earth’s organism to thrive on the planet Earth.

Question 2.
Give some suggestions to prevent air pollution.
Answer:

• Planting more trees can reduce the amount of carbon dioxide in the atmosphere.
• Reduce the use of automobiles and use public transports.
• Avoid aerosol spray products.

Activities:

Activity 1.
Find out the places where wind energy is produced. Also, discuss about the importance of wind energy in the classroom and make a report on your discussion.
Answer:
Tamil Nadu – First place in wind energy production.
Maharashtra – Second place in wind energy production.
Gujarat – Third place in wind energy production.
Rajasthan, Karnataka, Madhya Pradesh, Andhra Pradesh, Telangana, Kerala, Odisha, West Bengal, Jammu and Kashmir are the states producing wind power energy in India.

Importance of wind energy:

• Wind energy is a source of renewable energy.
• It does not contaminate.
• It is inexhaustible and reduces the use of fossil fuels.
• Wind energy does not generate waste and contaminated water.

Activity 2.
Find out the common air pollutants present in your area. Discuss about the effects of these pollutants. Record your observation in your notebook.
Answer:

Common air pollutants	Effects
Carbon Monoxide	It is harmful to the body and inhibits the blood’s ability to deliver oxygen to the organs.
Sulfur Dioxide	It is extremely harmful to the respiratory system, causing asthma.
Nitrogen oxides	Causing respiratory distress and a number of other health issues.

Samacheer Kalvi 5th Science Guide Air Additional Questions and Answers

I. Choose the correct answer:

Question 1.
Atmosphere is composed of________ nitrogen.
(a) 68%
(b) 78%
(c) 58%
(d)21%
Answer:
(b) 78%

Question 2.
Atmosphere is divided into _______ different layers.
(a) 5
(b) 4
(c) 6
(d) 3
Answer:
(a) 5

Question 3.
__________ is the lowest layer of the atmosphere.
(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Exosphere
Answer:
(a) Troposphere

Question 4.
Nitrogen fixation occur in ______.
(a) Humans
(b) animals
(c) plants
(d) All the above
Answer:
(c) plants

Question 5.
__________ is an air sport.
(a) Paragliding
(b) Hang gliding
(c) both a & b
(d) None of these
Answer:
(c) both a & b

II. Fill in the blanks:

Question 1.
_______ is known as paragliding capital of India.
Answer:
Himachal Pradesh

Question 2.
The movement of air is called ______.
Answer:
wind

Question 3.
________ found above the mesosphere.
Answer:
Thermosphere

Question 4.
The word pollution is derived from the Latin word ______.
Answer:
Polluere

Question 5.
Extraction of minerals from the Earth is ______.
Answer:
Mining

III. Say True or False. If false, correct the statement:

Question 1.
World Tuberculosis Day is observed on 24th March.
Answer:
True

Question 2.
Causative organism of Tuberculosis is Cornebacterium.
Answer:
False
Correct statement:
Causative organism of Tuberculosis is Mycobacterium.

Question 3.
Influenza is commonly found in adults.
Answer:
False
Correct statement:
Influenza is commonly found in childhood.

Question 4.
Mumps affects the upper respiratory tract.
Answer:
True

Question 5.
Air pollutants cause pneumonia.
Answer:
True

IV. Match the following:

1. Acid rain	a. Bordetalla pertusis
2. Eutrophication	b. Airborne disease
3. Diphtheria	c. Green algae
4. Whooping cough	d. Nitrogen oxides

Answer:

1. d
2. c
3. b
4. a

V. Answer briefly:

Question 1.
What is mesosphere?
Answer:

• The region above the stratosphere is called the mesosphere.
• It extends upward to a height of about 85km from the ground.
• The temperature in this layer decreases with height and it is -1100 C.

Question 2.
What is wind?
Answer:

• Air flows from a region of high pressure to low pressure.
• This flow of air at high speed is called wind.

Question 3.
Why do plants need nitrogen?
Answer:

• Nitrogen present in the air is useful for plants.
• The nitrogen in the atmosphere is converted into easily absorbable nitrates by plants with the help of some microbes.
• It is known as nitrogen fixation. These nitrates are useful for the growth of plants.

Question 4.
Write a short note on chickenpox.
Answer:

• It is common among children but adults also may get it.
• Affected people will have blisters or spots in the body and face along with fever.
• Those blisters with fluid will drain but sometimes it may leave scars.

Question 5.
Why mountain climbers carry oxygen while climbing?
Answer:

• As the height increases, the amount of air in the atmosphere decreases and so the oxygen level will decrease.
• That is why mountain climbers carry oxygen cylinders while climbing mountains.

Question 6.
How is acid rain formed?
Answer:

• Harmful gases like nitrogen oxides and sulfur oxides are released into the atmosphere while burning fossil fuels.
• When it rains, the water droplets combine with these gases and fall on the ground in the form of acid rain.

VI. Answer in detail:

Question 1.
How can we prevent airborne disease?
Answer:

• Avoid close contact with people who have active symptoms of disease.
• Maintain personal hygiene.
• Keep the patient in complete isolation.
• Cover nose and mouth while sneezing or coughing.
• Avoid touching the face or other people with unwashed hands.
• Wash your hands thoroughly.
• Timely vaccination can prevent the diseases.

Question 2.
What are the common diseases caused by bacteria?
Answer:
Diphtheria, Whooping Cough, and Tuberculosis are some of the common airborne diseases caused by bacteria.

Diphtheria:

• It is caused by bacteria, Corynebacterium diphtheria.
• It generally affects the upper respiratory tract (nose and throat) and causes fever, sore throat, and choking of air passage.

Whooping Cough:

• Whooping cough is caused by Bordetalla pertusis.
• It also affects the respiratory tract and causes mild fever, severe cough ending in a whoop.

Tuberculosis:

• Tuberculosis is caused by the bacteria, Microbacterium tuberculosis.
• When we breathe, the bacteria present in the air gets into the lungs and affect it.
• Infected person has to be treated with anti-tubercular drugs for a period of 6 months to one year.

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide Pdf Term 3 Chapter 2 Animals Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Science Solutions Term 3 Chapter 2 Animals

Samacheer Kalvi 5th Science Guide Animals Text Book Back Questions and Answers

Evaluation

I. Choose the correct answer:

Question 1.
Fission is a way of ______ reproduction
(a) sexual
(b) asexual
(c) viviparous
(d) oviparous
Answer:
(b) Asexual

Question 2.
______ is an oviparous animal.
(a) Cow
(b) Deer
(c) Goat
(d) Duck
Answer:
(d) Duck

Question 3.
Endangered animals are protected in ______.
(a) museums
(b) circus
(c) farm
(d) sanctuary
Answer:
(d) Sanctuary

Question 4.
Mundanthurai sanctuary is located in ______ district.
(a) Thiruppur
(b) Tiruvarur
(C) Thirunelveli
(d) Thiruvallur
Answer:
(c) Thirunelveli

Question 5.
The vision of Blue Cross is ______ animal.
(a) Hunting
(b) capturing
(c) saving
(d) neglecting
Answer:
(c) Saving

II. Fill in the blanks:

Question 1.
Animals which give birth to young ones directly are named as ______.
Answer:
Mammals

Question 2.
______ of animals leads to endangered condition.
Answer:
Hunting

Question 3.
Gir National Park is famous for ______.
Answer:
Asiatic Lions

Question 4.
Blue Cross is an ______ welfare organization.
Answer:
Animal

Question 5.
Nilgiri Tahr is an ______ species.
Answer:
Endangered

III. Match the following:

1. Zygote	a. Asexual Reproduction
2. Viviparous	b. Elephant
3. Endangered animal	c. Cat
4. Mudhumalai	d. Fertilised Egg
5. Fragmentation	e. Rhinoceros

Answer:

1. Zygote	a. Fertilised Egg
2. Viviparous	b. Cat
3. Endangered Animal	c. Rhinoceros
4. Mudhumalai	d. Elephant
5. Fragmentation	e. Asexual Reproduction

IV. Answer briefly:

Question 1.
What is fertilization?
Answer:
When the male gamete reaches the female gametes they begin to fuse together. The fusion of gametes is known as fertilization.

Question 2.
What are the different stages of sexual reproduction?
Answer:
Sexual reproduction consists of the following stages.

• Pre-fertilization
• Fertilization
• Post-fertilization.

Question 3.
Mention the different types of asexual reproduction.
Answer:
Fission, Budding, Fragmentation, and Spores are the different types of asexual reproduction.

Question 4.
Differentiate between oviparous and viviparous animals.
Answer:

Oviparous animals	Viviparous animals
The development of the embryo takes place outside the animal.	The development of the embryo takes place inside the animal.
They produce their young ones by laying eggs.	They directly give birth to the young ones.
The embryo receives the nutrients from the egg yolk.	The embryo receives the nutrients from the mother.
Examples for oviparous animals are insects, fish, reptiles and birds.	Examples for viviparous animals are cats, dogs, humans and lions.

Question 5.
Write anote on Blue Cross.
Answer:

• Blue Cross is a registered animal welfare charity in the United Kingdom.
• It was established in 1897 with the vision that every pet will enjoy a healthy life in a happy home.
• The charity provides support for pet owners who cannot afford private veterinary treatment.
• Helps to find homes for unwanted animals, and educates the public in the responsibilities of animal ownership.

V. Answer in detail:

Question 1.
Explain the methods of asexual reproduction.
Answer:
Fission :

• Fission occurs in some invertebrate (organisms without backbone), multi-celled organisms.
• In this method, an organism splits itself into two parts.
• For example, flatworms, sea anemones, and sea cucumbers divide into two halves and regenerate the other half in each of the resulting individuals.

Budding:

• Budding is a form of asexual reproduction that results from the outgrowth of a part of the body.
• Then the bud is separated from the original organism forming two individuals.
• Budding occurs commonly in some invertebrate animals such as hydras and corals.

Fragmentation:

• Fragmentation is the breaking of an individual into parts followed by regeneration.
• Reproduction through fragmentation is observed in sponges and sea stars.
• Fragmentation may occur through accidental damage, damage from predators, or as a natural form of reproduction.

Spores:

• Some protozoan, bacteria, plants, and fungi reproduce via spores.
• Spores are the structures naturally grown as part of an organism’s life cycle.
• They are separated from the organism and dispersed through a medium such as air or water.
• In a suitable environment, the spores will develop into a fully grown organism.

Question 2.
What are the causes of the extinction of animals?
Answer:

• Forests are destroyed for human needs.
• More animals are hunted for their horns, skin, teeth, and many other valuable products.
• Pollutions like air pollution and water pollution affect the animals.
• Sometimes animals are taken to new habitats by people. They cannot survive there.
• Pesticides and chemicals are used to get rid of insects, pests, or weeds, poison the plants and animals.
• Natural disasters like floods, cyclones, and fire also destroy animals.

Question 3.
Write an essay about National parks and wildlife sanctuaries.
Answer:
A National park is an area which is strictly reserved for the betterment of the wild life. In these areas, activities like forestry, grazing, or cultivation are not permitted.
Some Important National parks:

Jim Corbett National Park:

• It is located close to Nainital, in Uttarakhand.
• Tigers are found in this park.
• Several species of deer, leopards, jackals, red foxes, black bears, sloth bears, and are also found.

Gir Forest National Park:

• It is located in Gujarat.
• Asiatic lions in their natural habitat can be seen here. Other animals sambar, chinkara, chital, porcupine, wild boar, and blackbuck can be seen here.

Kaziranga National Park:

• Wild animals such as Rhinoceros, Tiger, Elephant, Wild Buffalo, and Swam are seen here.
• Also has bears, leopards, and several species of local and migratory birds.
• This park is famous for one-horned Rhino.

Sundarban National Park:

• Located in West Bengal.
• The Sundarban National Park is a Tiger and Biosphere Reserve on the Ganges
• Bengal tiger, saltwater crocodile, wild boars, foxes, leopard cats, huge turtles, ( river dolphins, and several other varieties of mammals and reptiles, along with a variety of local and migratory birds can be seen here.

Kanha National Park:

• Kanha National Park located in Madhya Pradesh was established as a part of Project Tiger.
• Apart from tigers, animals such as elephants, jackals, leopards, striped hyenas, monkeys, and several varieties of deer including black buck, swamp deer, chital, and sambhar are seen here.

Periyar National park:

• Periyar National Park is in Thekkady, Kerala.
• Various species including the majestic elephants, royal tigers, and fishes, reptiles and birds can be seen here.

Guindy National park:

• This park is located at the heart of Chennai city.
• It is home to spotted deer, blackbucks, white bucks, river otter, hyena, bonnet monkey, civet cat, jackals, pangolin, hedgehog and common mongoose, etc.

Wildlife Sanctuary:
Kalakkad Wildlife Sanctuary:

• The Kalakkad wildlife sanctuary is famous for Tigers.
• Lion-tailed macaque, Nilgiri langur, bonnet macaque, langur, Nilgiri tahr, sambar, sloth bear, gaur, elephant, flying squirrel, panther, wild dog, and pangolin are some of the animals found here.

Mudumalai Wildlife Sanctuary:

• It is located in Ooty.
• Bengal Tiger, Giant Elephant, and Leopard are found here.
• Elephant safari is famous in this sanctuary.

Mundanthrai Wildlife Sanctuary:

• It is located in Thirunelveli District.
• The major wildlife animal found here is Tiger.

Activities:

Activity 1.
List out any three oviparous and viviparous animals in the table given below.
Answer:

Oviparous animals	Viviparous animals
Insects	Cats
Fish	Dogs
Reptiles	Lions
	Human

Samacheer Kalvi 5th Science Guide Animals Additional Questions and Answers

I. Choose the correct answer:

Question 1.
______ is the biological process by which an organism gives rise to a new organism.
(a) Species
(b) Generation
(c) Reproduction
Answer:
(c) Reproduction

Question 2.
______ is the first stage of sexual reproduction.
(a) Fertilisation
(b) Pre-fertilisation
(c) Post-fertilisation
Answer:
(b) Pre-fertilisation

Question 3.
______ fertilisation takes place in frogs and fish.
(a) Internal
(b) External
(c) Post
Answer:
(b) External

Question 4.
The zygote divides repeatedly into a group of cells, which develops into different tissues and organs constituting a full body. This structure is known as ______.
(a) egg
(b) embryo
(c) zygote
Answer:
(b) Embryo

Question 5.
Animals in which an embryo develops outside the body are called ______ animals.
(a) oviparous
(b) viviparous
(c) oviparous
Answer:
(a) Oviparous

Question 6.
______ lay thousands and sometimes millions of small, soft eggs in water.
(a) Oviparous
(b) Amphibians
(c) Viviparous
Answer:
(b) Amphibians

Question 7.
The eggshell protects the ______ from the outer environment.
(a) embryo
(b) yolk
(c) larva
Answer:
(a) Embryo

II. Fill In the blanks:

Question 1.
________ are organisms without backbone
Answer:
Invertebrate

Question 2.
The type of reproduction in which only a singe parent, gets divided into two new offspring is known as ______.
Answer:
Asexual reproduction

Question 3.
________ is one of the asexual method of reproduction.
Answer:
Fission

Question 4.
In ______ animals, the development of the embryo takes place inside the body.
Answer:
viviparous

Question 5.
_________ is a form of asexual reproduction that results from the outgrowth of a part of the body.
Answer:
Budding

Question 6.
________ is the breaking of an individual into parts followed by regeneration.
Answer:
Fragmentation

III. Say True or False. If false, correct the statement:

Question 1.
Spores are the structures naturally grown as part of an organism’s life cycle.
Answer:
True

Question 2.
An animal is said to be endangered if its population is currently less than 50 or less than 2500 for the past three years
Answer:
False
Correct statement:
An animal is said to be endangered if its population is currently less than 50 or less than 250 for the past three years.

Question 3.
Biodiversity is the term used to describe different plants, animals, micro-organisms and insects, etc.
Answer:
True

Question 4.
Hunting and poaching animals should be encouraged.
Answer:
False
Correct statement:
Hunting and poaching animals should be prohibited.

Question 5.
Pesticides and chemicals used to get rid of insects, pests or weeds, poison the plants and animals.
Answer:
True

IV. Match the following:

1. Jim Corbett National park	a. Thekkady
2. Periyar National park	b. Kancheepuram
3. Guindy National park	c. Coimbatore
4. Anaimalai Wildlife sanctuary	d. Uttarkhand
5. Vedanthangal bird sanctuary	e. Chennai

Answer:

1. d
2. a
3. e
4. c
5. b

V. Answer briefly:

Question 1.
Name the two ways by which fertilisation in animals takes place.
Answer:
Fertilisation in animals takes place in two ways. They are: External fertilization and Internal fertilization

Question 2.
Explain the term reproduction.
Answer:

• Reproduction is the biological process by which an organism gives rise to a new organism.
• This process is seen in all living organisms – both plants and animals. Reproduction is essential for the continuation of similar kinds of species, generation after generation.
• In animals, sexual and asexual reproduction are seen.

Question 3.
What is external fertilisation?
Answer:

• External fertilization takes place outside the animal’s body.
• It usually takes place in aquatic environments where both eggs and sperm are released into the water.
• Fertilization in frogs and fish takes place by this method.

Question 4.
What are oviparous animals?
Answer:

• Animals in which an embryo develops outside the body are called oviparous animals.
• They produce their offspring by laying eggs. In the case of birds, new ones are produced from the eggs.
• The egg shell protects the embryo from the outer environment and the embryo receives its nutrients from the egg yolk.

Question 5.
What is asexual reproduction?
Answer:

• Only a single parent, gets divided into two new offspring, which is known as asexual reproduction.
• It takes place in microorganisms like hydra and amoeba.
• It produces offspring that are identical to the parent.

Question 6.
Name some endangered species in India
Answer:
Snow Leopard, Bengal Tiger, Asiatic Lion, Purple Frog, and Indian Giant Squirrel are some of the endangered animals in India.

Question 7.
How to save endangered species? (any 2 methods)
Answer:
We need to take some measures to protect the endangered species.

1. Hunting and poaching animals should be prohibited.
2. We should hot pollute the environment.

Question 8.
What is Red data book?
Answer:
The Red Data Book is a book maintained for recording rare and endangered species of animals and plants. This book is created to identify and protect the species which are about to extinct.

Question 9.
Expand IUCN.
Answer:
IUCN – International Union for Conservation of Nature.

Question 10.
What is meant by conservation?
Answer:

• Conservation is the protection, preservation, management of wildlife, and natural resources.
• Endangered species are maintained in certain protected areas such as national parks and wildlife sanctuaries.

Question 11.
Name the wild animals that are protected at Kaziranga National park.
Answer:

• Wild animals such as Rhinoceros, Tiger, Elephant, Wild Buffalo, and Swamp Deer are seen here.
• This park also has bears, leopards, and several species of local and migratory birds. This park is famous for one-horned Rhino.

Question 12.
Expand UNESCO.
Answer:
UNESCO (United Nations Educational, Scientific, and Cultural Organisation).

Question 13.
What is the advantage of conservation?
Answer:

• Species can be adapted to their habitat.
• Species can interact with each other.
• The natural habitat of the animals is maintained.
• It is less expensive and easy to manage.

Question 14.
What is meant by cruelty?
Answer:
Cruelty to animals includes capturing, trapping, poisoning of any wild animal collectively.

Question 15.
Name 2 government organizations which work for the welfare of animals.
Answer:

1. Animal Welfare Board of India.
2. National Institute of Animal Welfare

VI. Answer In detail:

Question 1.
Explain the two types of fertilisation.
Answer:
Fertilisation:
Fertilisation in animals takes place in two ways. They are: External fertilization and Internal fertilization
External fertilisation:

• It takes place outside the animal’s body.
• It usually takes place in aquatic environments where both eggs and sperm are released into the water.
  Fertilization in frogs and fish takes place by this method.

Internal fertilisation:

• Fertilization takes place inside the. animal’s body.
• Internal fertilization takes place in animals like cats, dogs, cows, etc.

Question 2.
Explain the formation of the embryo.
Answer:

• The zygote (fertilized egg) further divides repeatedly into groups of cells.
• These cells develop into different tissues and organs constituting a full body.
• This structure is known as an embryo.
• The embryo continues to develop in the uterus and it is developed into body parts such as the head, face, hands, legs, etc.
• Based on the embryo develops outside or inside the body, animals are classified into oviparous and viviparous respectively.

Question 3.
How can we protect endangered species?
Answer:

• Hunting and poaching animals should be prohibited.
• We should not pollute the environment.
• Limiting the usage of plastic and recycling can save endangered animals.
• Pesticides and chemicals which pollute the environment should be avoided.
• Planting native trees will provide food to the animals.
• We should buy eco-friendly products only.

Question 4.
What are the advantages of the Red data book?
Answer:

• It helps to evaluate the population of a particular species.
• The data given in this book can be used at the global level.
• The risk of a species becoming globally extinct can be estimated with the help of this book.
• It provides the necessary guidelines for implementing protective measures.

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Social Science Guide Pdf Term 2 Chapter 3 Continents of the World Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Social Science Solutions Term 2 Chapter 3 Continents of the World

Samacheer Kalvi 5th Social Science Guide Continents of the World Text Book Back Questions and Answers

Evaluation

I. Choose the correct answer:

Question 1.
There are _______ continents in the world.
a) Five
b) Seven
c) Nine
Answer:
b) Seven

Question 2.
The largest continent is _______.
a) Africa
b) Asia
c) North America
Answer:
b) Asia

Question 3.
_______ is the longest river in the world.
a) Kaveri
b) Sanga
c) Nile
Answer:
c) Nile

Question 4.
Lake Superior is located in _______.
a) North America
b) Australia
c) Europe
Answer:
a) North America

Question 5.
Penguins are found in _______.
a) Asia
b) Antarctica
c) Africa
Answer:
b) Antarctica

II. Match the Following:

Answer:

III. True or False:

Question 1.
Asia is the third largest continent.
Answer:
False

Question 2.
India has one of the eight wonders of the world.
Answer:
False

Question 3.
Brazil is one of the largest coffee producers in the world.
Answer:
True

Question 4.
The great barrier reef is in India.
Answer:
False

Question 5.
Antarctica has half year of light.
Answer:
True

IV. Answer the following Questions:

Question 1.
Name the continents.
Answer:

• Asia
• Africa
• North America
• South America
• Antarctica
• Europe and
• Australia.

Question 2.
Where is the Taj Mahal is located?
Answer:
Taj Mahal is situated in Agra on the banks of river Yamuna.

Question 3.
Describe North America’s important features.
Answer:

• North America is the third largest continent by area, following Asia and Africa.
• The largest fresh water lake, Lake Superior is located in this continent.
• The world’s third longest river the Mississippi, is located in North America.
• The United States of America (USA) is a part of North America.

Question 4.
Where is the Great Barrier Reef located?
Answer:
The Great Barrier Reef is located in Australia.

Question 5.
Which continent is called the Frozen continent?
Answer:
Antarctica continent is called the Frozen continent.

V. Answer the following in detail:

Questions 1.
Write a short note on any two continents.
Answer:

• Asia – Asia is the world’s largest continent in size and population.
• Asia has the highest point on earth, the peak of Mount Everest which is in the Himalayas. Asia is the birth of great ancient civilisations: Harappan civilisation, Chinese civilisation, and Mesopotamian civilisation.
• Africa – Africa is the second largest continent of the world.
• The world’s longest river: the Nile and the world’s largest desert: the Sahara, both are home in Africa. More than 50% of the world’s gold and diamonds come from the mineral rich continent of Africa. Ethiopia in Africa is the hottest place.

Question 2.
Write a note on the monuments of India.
Answer:

• India has several historical monuments. Taj Mahal is one such monument.
• Taj Mahal is built completely using white marble stone. This most beautiful monument is recognised as one of the seven wonders of the world.
• Other historic monuments in India include India gate and Qutub Minor in Delhi, Gateway of India in Mumbai, Charminar in Hyderabad, Brihadeeshwara Temple, and GangaiKonda Cholapuram in Tamil Nadu.

Question 3.
Give a detail study of Australia.
Answer:

• Australia is the Island continent covered by a single country with unique landscapes and natural wonders.
• The Great Barrier Reef, the pride and joy of Australia are made up of nearly 2,500 individual reefs and visible from space.
• Australia includes the islands of Tasmania and numerous small islands.

Activity:

Question 1.
Write the name of the country and its continent in the table below.
Answer:

Country	Continent
China and India	Asia
Kenya, Egypt	Africa
Ottawa, Canada	North America
Argentina, Brazil	South America
Norway,Sweden	Europe

Think Zone:

Question 1.
Is it correct to pollute our rivers?
Answer:
No, it is not correct to pollute our rivers.

Question 2.
Which state is called the Bread Basket of India?
Answer:
The punjab and Haryana regions are considered the bread baskets of India.

Samacheer Kalvi 5th Social Science Guide Continents of the World Additional Questions and Answers

I. Choose the correct answer.

Question 1.
_______ is the world’s largest continent in size and population.
a) Asia
b) India
c) Africa
Answer:
a) Asia

Question 2.
_______ is the capital of India.
a) Calcutta
b) Bombay
c) Delhi
Answer:
c) Delhi

Question 3.
The world’s third longest river the Mississippi is located in _______ .
a) North America
b) South America
c) Asia
Answer:
a) North America

Question 4.
_______ is the highest peak in the Andes.
a) Mt. Cotopaxi
b) Mt. Aconcagua
c) Mt. Everest
Answer:
b) Mt. Aconcagua

II. Match the Following:

Answer:

1. (e)
2. (a)
3. (d)
4. (b)
5. (c)

III. True or False:

Question 1.
Asia is the birth of great ancient civilisations.
Answer:
True

Question 2.
Europe is also called the Frozen continent.
Answer:
False

Question 3.
The world’s smallest country, the Vatican city, is in Europe.
Answer:
True

Question 4.
Antarctica is the hottest continent on Earth.
Answer:
Flase

IV. Answer the following:

Question 1.
What is Pangaea?
Answer:
Billions of years ago, the seven continents of the world were joined together as a single huge landmass called Pangaea.

Question 2.
Why do we say India has unity in diversity?
Answer:
India is called “Land of unity in diversity” because India consists of; various religion people and all of them live together happily in the land of India. India has different forms of language, dresses, food but still our Indian live unite.

Question 3.
What is Dark Continent?
Answer:
The continent was uninhabitable(Not fit for habitation) and remained unknown for thousands of years, earning it the name of ‘Dark Continent’.

Question 4.
What is called the land of Lakes?
Answer:
Finland, in Europe, is called the ‘Land of Lakes’ because melting ice sheets have created a lot of lakes here.

Question 5.
Why Europe is called the Bread of Basket?
Answer:
Ukraine’s Steppe region is called the Bread Basket of Europe because it produces a large amount of wheat.

V. Answer the following in detail:

Question 1.
Describe South America’s important features.
Answer:

• South America is a subcontinent, mostly in the Southern Hemisphere, with a relatively small portion in
• the Northern Hemisphere.
• The world’s largest river which is also the second longest is the Amazon river in South America. Brazil a country in South America is one of the largest coffee producers in the world.
• The Andes form the highest mountain range in South America.
• Mt. Aconcagua is the highest peak in the Andes.
• One of the highest volcanoes of the world, Mt. Cotopaxi is found on this continent.
• The Amazon rainforest is a moist, broadleaf forest.

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Social Science Guide Pdf Term 3 Chapter 2 Agriculture Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Social Science Solutions Term 3 Chapter 2 Agriculture

Samacheer Kalvi 5th Social Science Guide Agriculture Text Book Back Questions and Answers

Evaluation

I. Choose the correct answer:

Question 1.

_______ is the cultivation of crops.
a) Irrigation
b) Agriculture
c) Excavation
Answer:
b) Agriculture

Question 2.
A _______ is a person who is engaged in agriculture.
a)doctor
b)teacher
c) farmer
Answer:
c) farmer

Question 3.
_______ farming refers to the raising of animals along with the crops.
a) Commercial
b) Mixed
c) Subsistence
Answer:
b) Mixed

Question 4.
_______ monitors the level and nature of groundwater.
a) Central Ground Water Board
b) Metro Water Board
c) Sewage Water Board
Answer:
a) Central Ground Water Board

Question 5.
_______ is the largest cotton producing district in Tamil Nadu.
a) Coimbatore
b) Chennai
c) Cuddalore
Answer:
a) Coimbatore

II. Match the Following:

Answer:

III. True or False:

Question 1.
Rice is the leading food crop in Tamil Nadu.
Answer:
True

Question 2.
Tamil Nadu has two soil types.
Answer:
False

Question 3.
Drip irrigation is a type of micro-irrigation system.
Answer:
True

Question 4.
Jackfruit is an example of plantation crop.
Answer:
False

Question 5.
Mango is the leading fruit crop of Tamil Nadu.
Answer:
True

IV. Answer the following:

Question 1.
What is agriculture?
Answer:

• Agriculture is the art and science of preparing the soil for cultivation, growing crops and raising livestock,
• Agriculture led to the development of human civilisation.

Question 2.
Write about farmers.
Answer:

• A farmer is a person who cultivates crops and rears animals (poultry and other livestock). India is a land of farmers.
• It is called so because majority of Indians are directly or indirectly involved in agricultural activities.

Question 3.
Name the different types of farming.
Answer:
There are several types of farming.

• Subsistence farming
• Commercial farming
• Plantation farming
• Mixed farming

Question 4.
What is well irrigation?
Answer:
Well irrigation has been practiced in Tamil Nadu for many generations. It is a less expensive type of irrigation.

Question 5.
What is well irrigation?
Answer:

• Well irrigation has been practiced in Tamil Nadu for many generations. It is a less expensive type of irrigation.
• Government of India is the National Apex Agency entrusted with the responsibilities of providing scientific inputs for management, exploration, monitoring, assessment, augmentation and regulation of groundwater resources of the country.
• CGWB monitors the level and nature of groundwater.

V. Answer in detail:

Question 1.
Write about mixed and plantation farming.
Answer:

• Mixed Farming: Mixed Farming refers to the rearing of animals along with the cultivation. This type of farming is economical.
• Plantation Farming: Plantation Farming is done in an estate where a single cash crop is cultivated on a large scale.
  Examples: Tea, Coffee and Rubber.

Question 2.
Explain any two types of irrigation.
Answer:

• Well Irrigation: Well Irrigation has been practiced in Tamil Nadu for many generations. It is a less expensive type of irrigation.
• Canal Irrigation: Canal Irrigation is the most important form of irrigation in India. Most of the North Indian canals are perennial. The main canal irrigated areas are in the northern plains of India such as Uttar Pradesh, Punjab, Haryana, Rajasthan and Bihar.

Question 3.
Write about the important crops of Tamil Nadu.
Answer:

• Tamil Nadu is suitable for the production of fruits, vegetables, spices, plantation crops, flowers, medicinal and aromatic plants.
• Horticulture is the fastest growing sector within agriculture in Tamil Nadu.
• Paddy is grown in large areas because rice is the main staple food of the state.
  iv) The principal food crops are rice, maize, jowar (cholam), bajra (Kambu), ragi, and pulses (Bengal gram,
  red gram, green gram, black gram, and horse gram).

Activity:

Find out the Following.
Question 1.
One who produces food for us _______.
Answer:
Farmer

Question 2.
It is used for ploughing _______.
Answer:
Tractor

Question 3.
It is used for separating grain from hay _______.
Answer:
Winnower

Think Zone:

Question 1.
Which state is known as the Rice bowl of India?
Answer:
Andhra Pradesh is known as the Rice bowl of India.

Samacheer Kalvi 5th Social Science Guide Agriculture Additional Questions and Answers

I. Choose the correct answer:

Question 1.
_______ of our national’s income comes from agriculture.
a) One-third
b) Two-third
c) One-forth
Answer:
a) One-third

Question 2.
_______ is a land of farmers.
a) Europe
b) India
c) Japan
Answer:
b) India

Question 3.
_______ method of farming is done by using modern tools and techniques.
a) Plantation farming
b) Subsistence farming
c) Commercial farming
Answer:
c) Commercial farming

Question 4.
_______ is the most important form of irrigation in India.
a) Well irrigation
b) Canal irrigation
c) Sprinkler irrigation
Answer:
a)Well irrigation

Question 5.
_______ is known as the Rice bowl of Tamil Nadu.
a) Thanjavur
b) Chennai
c) Madurai
Answer:
a) Thanjavur

II. Fill in the blanks:

Question 1.
_______ is the branch of agriculture.
Answer:
Animal husbandry

Question 2.
_______ has become a necessity for humans.
Answer:
Agriculture

Question 3.
Agricultural development contributes to the _______ of our country.
Answer:
Economy

Question 4.
_______ type of farming is economical.
Answer:
Mixed farming

Question 5.
Tamil Nadu depends on _______ and monsoon.
Answer:
Northeast, South west

Question 6.
_______ has been practised in Tamil Nadu for many generations.
Answer:
Well Irrigation

Question 7.
Water is sprayed through pipes in the air through _______.
Answer:
Sprinklers

III. True or False:

Question 1.
Agriculture led to the development of human civilisation.
Answer:
True

Question 2.
Agriculture is the backbone of our economy.
Answer:
True

Question 3.
In commercial farming, crops, are cultivated and used only for own family consumption.
Answer:
False

Question 4.
Canal irrigation is the most important form of irrigation in India.
Answer:
True

Question 5.
Sprinkler irrigation is a type of micro-irrigation system that saves water and soil nutrients.
Answer:
False

Question 6.
Chennai is known as the Manchester of South India
Answer:
False

IV. Match the Following:

Answer:

1. (e)
2. (d)
3. (a)
4. (b)
5. (c)

V. Answer the following:
Question 1.
Define micro farmers.
Answer:
Farmers who cultivate in an area less than 1 hectare are called micro farmers.

Question 2.
Write a short note on subsistence farming.
Answer:
In subsistence farming, crops are cultivated and used only for own family consumption. Such type of farming is adopted by small and marginal farmers on fragmented land holdings. The cultivated crops are usually food crops.

Question 3.
Write about FCI.
Answer:
The Government has set up agencies like the Food Corporation of India to purchase the farm products directly from the farmers at reasonable rates.

Question 4.
What is Green revolution?.
Answer:
Green revolution is a process which brought an increase in crop production by using new varieties of seeds, pesticides and new agricultural techniques.

Question 5.
Who is the father of Green revolution in India?
Answer:
Dr. M.S. Swaminathan of Tamil Nadu is known as the Father of Green Revolution in India.

Question 6.
What is animal husbandry?
Answer:
Animal husbandry is the branch of agriculture. It is to raise animals for meat, fur, milk, eggs and other products.

Question 7.
What is Horticulture?
Answer:
Horticulture is the science or art of cultivating fruits, vegetables, flowers or ornamental plants.

Question 8.
Name some important cropping seasons in Tamil Nadu.
Answer:

• Navarai
• Sornavari
• Kar
• Kuruvai
• Samba
• Thaladi.

VI. Answer the following in detail:

Question 1.
What is Irrigation? and types of Irrigation.

Answer:
Irrigation is the supply of water to land or crops for the purpose of agricultural production.
Types of Irrigation

• Well Irrigation
• Canal Irrigation
• Sprinkler Irrigation
• Drip Irrigation.

Question 2.
Write about sprinkler and Drip Irrigation.
Answer:

• Sprinkler irrigation: Sprinkler irrigation is similar to natural rainfall. Water is sprayed through pipes in the air through sprinklers.
• Drip Irrigation: Drip Irrigation is a type of micro-irrigation system that saves water and soil nutrients. In this system water drips slowly into the roots of plants through pipes. Pipes can be either above the soil surface or buried below the surface. The water directly reaches the roots and minimises evaporation.

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide Pdf Term 1 Chapter 1 Organ System Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Science Solutions Term 1 Chapter 1 Organ System

Samacheer Kalvi 5th Science Guide Organ System Text Book Back Questions and Answers

Evaluation

I. Choose the Correct Answer:

Question 1.
What is the length of the alimentary canal?
a) 3-5 m
b) 5-6 m
c) 9-11 m
d) 6-9 m
Answer:
d) 6-9 m

Question 2.
Which organ is involved in respiration?
a) Kidney
b) Lungs
c) Heart
d) Brain
Answer:
b) Lungs

Question 3.
How many kidneys do we have?
a) 2
b) 3
c) 1
d) 4
Answer:
a) 2

Question 4.
Functional unit of brain is
a) Neuron
b) Nephron
c) Brain stem
d) Nerves
Answer:
a) Neuron

Question 5.
Blood is bumped by
a) Lungs
b) Heart
c) Kidneys
d) Bones
Answer:
b) Heart

II. Fill in the blanks:

Question 1.
A group of organs together make up an _______ system.
Answer:
organ system

Question 2.
The process by which the body removes waste is called _______.
Answer:
Excretion

Question 3.
The number of chambers in human heart is _______.
Answer:
Four

Question 4.
The functional unit of kidney is _______.
Answer:
Nephron

Question 5.
The human nervous system is divided into _______ parts.
Answer:
Two

III. Say True or False:

Question 1.
The circulatory system is made up of the heart, blood, and blood vessels.
Answer:
True

Question 2.
Important function of the heart is to transport blood with nutrients, oxygen, waste, and hormones.
Answer:
True

Question 3.
The brain is protected by the rib cage.
Answer:
False

Question 4.
The functional unit of kidney is neuron.
Answer:
False

IV. Circle the odd one:

Question 1:

Answer:

V. Match the following:

Answer:

1. C
2. e
3. d
4. a
5. b

VI. Answer briefly:

Question 1.
Name the salivary glands in our mouth?
Answer:
The three parts of salivary glands in our mouth are parotid, sublingual and submandibular glands.

Question 2.
What is respiration?
Answer:
The process of providing oxygen to the tissues of the body and removing carbon dioxide from the tissues is called respiration.

Question 3.
What is the function of pericardial fluid?
Answer:
The space between the membranes is filled with pericardial fluid. This fluid protects the heart from shock.

Question 4.
Name the chambers in human heart?
Answer:
The heart is divided into four chambers. Two upper chambers are called atria or auricles. Two lower thicker chambers are called ventricles. The upper and lower chambers are separated by a muscular wall or tissue known as auriculo-ventricular septum of the heart.

Question 5.
Arrange the excretory system in correct sequence.
(Urinary bladder, Ureter, Kidney, Urethra).
Answer:
Kidney, Ureter, Urinary bladder, Urethra.

Question 6.
What are the two parts of peripheral nervous system?
Answer:
Peripheral nervous system consists of nerves extending from spinal cord to all parts of the body. It is made up of 2 parts.

• Somatic nervous system
• Autonomous nervous system.

Question 7.
What are the functions of blood?
Answer:

• Blood transports nutrients, oxygen, wastes, and hormones.
• It regulates the water level and body temperature.
• It takes oxygen to tissues and cells finally reaches the lungs to take oxygen again.

VII. Answer in detail:

Question 1.
List out the functions of the digestive system.

Answer:

• The process of conversion of complex food molecules into simpler molecules is called digestion.
• Saliva moistens food.
• Salivary enzymes which break down complex starch into simple carbohydrate molecules.
• Digestive enzymes are used for digesting fats, proteins, and carbohydrates.

Question 2.
Explain the main parts of the circulatory system.
Answer:

• In circulatory system, Blood is circulated to transport oxygen and nutrients to every part of the body through circulatory system.
• Circulatory system consists of the
  1. Heart
  2. Blood
  3. Blood Vessels

1. Heart:

• The heart is a hollow, muscular organ conical in shape.
• It is covered by a double walled pericardium membrane, filled with pericardial fluid.
• This fluid protects the heart from shock.
• Heart is placed inside the rib cage between the two lungs.
• Heart has 4 chambers, the two upper chambers called auricles.
• The two lower thicker chambers called ventricles.
• The upper and lower chambers of the heart are separated by muscular wall known as auriculo-ventricular septum.
• The right side of the heart receives de-oxygenated blood from various parts of body and pumped to the lungs for oxygenation.
• The left side of the heart receives oxygenated blood from the lungs and pumps to different parts of the body.

2. Blood:

• It transports nutrients’ oxygen, wastes and hormones.
• It regulates the water level and body temperature.
• Blood pumped through out the body by the heart.
• It takes oxygen to the tissues and cells from the lungs.

3. Blood vessels:
Blood vessels consists of arteries and veins. Arteries carry oxygenated blood except pulmonary arteries which carries deoxygenated blood from the heart vein carries deoxygenated blood except pulmonary veins which carries oxygenated blood to heart.

Question 3.
Explain three major parts of human brain.
Answer:
Human brain is divided into 3 major parts.

1. Fore Brain (Cerebrum)
2. Mid Brain (Cerebellum)
3. Hind Brain (Medulla Oblongata)

1. Fore Brain – Cerebrum
The fore brain consists of cerebrum, thalamus and hypothalamus.

• It is the largest part of the brain.
• It is the centre of human memory.
• It is responsible for intelligence, imagination and reasoning.

2. Mid Brain – Cerebellum

• It lies behind the cerebrum.
• It co-ordinates the movements of the muscules of body.
• It helps to maintain the balance of the body.

3. Hind Brain – Medulla Oblongata

• The hind brain comprises of pons and medulla oblongata.
• It is also called the brain stem.
• It controls breathing, heartbeat, and other involuntary muscles, so it is called “Vital Knot”.
• It connects the brain to the spinal cord.

Question 4.
Label the diagram given below.

Answer:

VIII. Questions based on higher order thinking (HOT):

Question 1. Why It is important to wear helmet while riding a bike?
Answer:
Wearing helmet helps to protect your life and protect your head from danger. The head and brain is the most vulnerable to injury in a motorcycle accident. Drivers and passengers wearing helmets increase their chances of survival over non-helmet wearers. Riders who do not wear helmets are at risk of suffering a traumatic brain injury, if they are in accident. Brain trauma often results in spinal cord injuries and disability that requires extended care and physical therapy. The damaged brain may deteriorate after hospitalization and die days to weeks after the injury due to secondary injury.

Question 2.
Eating fast-food and junk food affects our health. Justify.
Answer:

• Fast food is usually higher in fat, calories cholesterol, and sodium in comparison to homemade meals.
• Eating too much fast food can increase the risk for health problems such as high blood pressure, heart disease, and obesity.
• Eating a poor quality diet high in junk food is linked to a higher risk of obesity, depression, digestive issues, heart diseases and stroke, type 2 diabetes, cancer, and early death.

Samacheer Kalvi 5th Science Guide Organ System Additional Questions and Answers

I. Choose the Correct Answer:

Question 1.
The brain is kept in a bony case called
a) Cranium
b) Cerebellum
c) Cerebrum
d) Medulla Oblongata
Answer:
a) Cranium

Question 2.
The left side of the heart receives oxygenated blood from
a) Lung
b) Heart
c) Liver
d) Kidney
Answer:
a) Lung

Question 3.
Name the functional unit of brain
a) Neurons
b) Nephrons
c) Fibrous membrane
d) Capsule
Answer:
a) Hind Brain

Question 4.
The brain loses the ability to function when it does not get oxygen for more than.
a) 2 minutes
b) 3 minutes
c) 4 minutes
d) 5 minutes
Answer:
4 minutes

Question 5.
The volume of blood in human adults is _______.
a) 4-5 litres
b) 5-6 litres
c) 3-5 litres
d) 4-8 litres
Answer:
a) 4-5 litres

Question 6.
The volume of blood in human adults is _______.
a) 4-5 litres
b) 5-6 litres
c) 3-5 litres
d) 4-8 litres
Answer:

a) 4-5 litres

Question 7.
Heart ¡s covered with double walled membrane called
a) cerebrum
b) Cerebellum
c) pericardium
d) rib cage
Answer:
c) pericardium

Question 8.
____________ carries sensation’s from the organs to the brain.
a) Somatic nervous system
b) Autonomous nervous system
c) Central nervous system
d) Spinal cord
Answer:
Somatic nervous system

Question 9.
____________ is the largest part of the brain.
a) Fore Brain
b) Mid Brain
c) Hind Brain
d) Centre Brain
Answer:
a) Fore Brain

Question 10.
Medulla oblongata is called as
a) pia meter
b) durameter
c) vital knot
d) pons verolli
Answer:
c) vital knot

Question 11.
Which of the following statement is correct about cerebellum?
a) It is the largest part of the brain
b) It co-ordinates the movements of the muscles of the body.
c) It controls involuntary action
d) It lies behind the cerebrum
Answer:
Both (b) and (d)

II. Fill in the blanks:
Question 1.
Salivary glands secrete _______.
Answer:
saliva

Question 2.
Name the organism which lives in the digestive system of human _______.
Answer:
Tapeworm

Question 3.
Liver produces for the digestion of fat.
Answer:
Bile

Question 4.
________ is sac – like in shape.
Answer:
Urinary bladder

Question 5.
Kidneys receive approximately ________ litres of blood.
Answer:
250 liter

Question 6.
The kidneys are made up of millions of excretory units called _______.
Answer:
Nephrons

III. Say True or False:

Question 1.
Liver transport nutrients, oxygen, wastes, and hormones.
Answer:
False

Question 2.
Blood vessels consist of arteries and veins.
Answer:
True

Question 3.
Crab has blue blood.
Answer:
True

Question 4.
Autonomous nervous system carries sensation from the organs_______ to the brain.
Answer:
True

Question 5.
Average weight of human brain ¡s 2.3 kg.
Answer:
False

Question 6.
Brain is made up of eight immovable bones.
Answer:
True

Question 7.
Fore brain lies behind the cerebrum.
Answer:
False

Question 8.
Fore brain is the centre of human memory.
Answer:
True

IV. Circle the odd one out:

Question 1.
(a) Heart
(b) Blood vessels
(c) Airway
(d) Pancreatic juice
Answer:
(d) Pancreatic juice

Question 2.
(a) Air way
(b) Lungs
(c) Liver
(d) Muscles of respiration
Answer:
(c) Liver

Question 3.
(a) pancreatic juice
(b) Bile
(c) Digestive enzymes
(d) paracardial fluid
Answer:
(d) paracardial fluid

Question 4.
(a) Nasal cavity
(b) Pharynx
(c) Nostrils
(d) Pancreas
Answer:
(d) Pancreas

Question 5.
(a) Dura mater
(b) Cranium
(c) Arachnoid membrane
(d) Pia meter
Answer:
(b) Cranium

Question 6.
(a) Pharynx
(b) Larynx
(c) bronchi
(d) Arteries
Answer:
(d) Arteries

V. Match the following:

Question 1.

Answer:

1. d
2. a
3. b
4. c

Question 2.

Answer:

1. b
2. a
3. d
4. c

VI. Answer briefly:

Question 1.
What is digestion?
Answer:
The process of conversion of complex food molecules into simpler molecules is called digestion.

Question 2.
What are the compounds present in the food?
Answer:
The food contain complex compounds like carbohydrates, proteins and fats.

Question 3.
Mention the 3 important digestive glands in the process of digestion?
Answer:
Three important digestive glands in the process of digestion are:

• Salivary glands
• Pancreas
• Liver.

Question 4.
Why do we eat?
Answer:
Food contains sources of energy that the body needs to stay alive and to repair itself.

Question 5.
What happens when we swallow our food?
Answer:

• Our tongue squeezes off a portion and pushes down into your throat to the top of the esophagus.
• When we swallow muscular waves push the food along the digestive tract from the mouth down the esophagus to the stomach.
•  From the stomach, it moves on to the small and large intestine.

Question 6.
What are the most important toxic gases in smoke?
Answer:
Smoke contains many toxic gases. The most common is carbon monoxide.

Question 7.
What is the primary organ of the respiratory system?
Answer:
The lungs are the primary organs of the respiratory system. They are paired cone-shaped organs. They are located near the backbone on both sides of the heart.

Question 8.
Name the muscles of respiration?
Answer:
Muscles of respiration include diaphram and intercostal muscles.

VII. Answer in detail:

Question 1.
Draw a flow chart to explain the function of digestive system in human being.
Answer:

Question 2.
Draw and label the parts for the structure of kidney.
Answer:

Question 3.
Explain the structure of heart.
Answer:

• The heart ¡s a hollow, muscular organ. It ¡s conical ¡n shape.
• It ¡s covered with double walled membrane called pericardiurn.
• The space between themembranes is filled with pericardial fluid. .
• The pericardial fluid protects the heart from shock.
• Heart ¡s placed inside the thoracic chamber (rib cage) ¡n between the two lungs.
• The heart ¡s divided into four chambers.
• Two upper chambers are called atrio or auricles.
• Two lower thicker chambers are called ventricles.
• The upper and lower chambers of the heart are separated by a muscular wall or tissue known as the auriculo-ventricular septum of the heart.
• The right side of the heart receives deoxygenated blood from various parts of the body and pumps it to the lungs for
  oxygenation.
• The left side of the heart receives oxygenated blood from the lungs and pumps it into different parts of the body.

Tamilnadu State Board New Syllabus Samacheer Kalvi 5th Science Guide Pdf Term 1 Chapter 2 Matter and Materials Text Book Back Questions and Answers, Notes.

Tamilnadu Samacheer Kalvi 5th Science Solutions Term 1 Chapter 2 Matter and Materials

Samacheer Kalvi 5th Science Guide Matter and Materials Text Book Back Questions and Answers

Evaluation

I. Choose the Correct Answer:

Question 1.
Which of the following are the states of matter?
a) Solid, Liquid, Water
b) Solid, Liquid, Gas
c) Solid, Liquid, Wood
d) Solid, Liquid, Sugar
Answer:
b) Solid, Liquid, Gas

Question 2.
Which of the following is a solid?
a) Kerosene
b) Air
c) Water
d) Apple
Answer:
d) Apple

Question 3.
Jute fibre is obtained from
a) leaf
b) stem
c) flower
d) root
Answer:
b) Stem

II. Fill in the blanks:

Question 1.
__________ soil is suitable for growing cotton.
Answer:
Black soil and alluvial soil

Question 2.
The process of making cotton yarn from cotton fibre is __________ .
Answer:
Spinning

Question 3.
Ginning is done to separate _______ from the seeds.
Answer:
Raw fibres

Question 4.
Synthetic fibre is also called _________ fibre.
Answer:
Artificial fibre

Question 5.
Woolen clothes are manufactured from _______.
Answer:
Plant / animals

III. Match the following:

Answer:

1. b
2. a
3. e
4. c
5. d

IV. Say True or False:

Question 1.
Coir is the outer covering of coconut.
Answer:
True

Question 2.
Beans and peas are pulses.
Answer:
False

Question 3.
Table is a household good.
Answer:
True

Question 4.
Sweet corn is not a product of maize.
Answer:
False

Question 5.
Cotton balls contain jute fibre.
Answer:
False

V. Complete the given analogy:

Question 1.
Solid: Table:: _______ : Water.
Answer:
Liquid

Question 2.
Cotton seed: _______ :: Lint: Spinning.
Answer:
Ginning

Question 3.
Coir fibre: _______ :: Cotton fibre: Cotton Plant.
Answer:
Coconut tree

Question 4.
Black Pepper: Spice:: Sweat corn: _______.
Answer:
Cereal

VI. Answer brief:

Question 1.
What is known as ginning?
Answer:
The raw fibres are separated from the seed by a process is known as ginning.

Question 2.
Give two examples of food products made from wheat.
Answer:
Wheat products are breads, cakes, pasta, wheat germ and cracked wheat.

Question 3.
What are synthetic fibres?
Answer:
The fibres made by human beings with the help of chemical process are called synthetic fibres or artificial fibres. These fibres are obtained from coal, petroleum and natural gas.
Eg: Rayon, nylon, polyester, Acrylic.

Question 4.
What is known as upthrust?
Answer:
When an object is immersed into a liquid, the liquid exerts an upward force on the object. It is known as upthrust.

Question 5.
Name the list of whole grains.
Answer:
Wheat, maize, rice, beans, peas, barley, and millets are some of the whole grains.

VII. Answer in detail:

Question 1.
Discuss briefly about three states of matter.
Answer:
Matter is anything that has mass and occupies space. Matter can exist in three states: Solid, liquid and gas.
a) Solid: In solids, molecules are very closely packed, solids are incompressible. They have a definite shape, size and volume.
Eg: Table, Book, Metals.

b) Liquid: In liquids, molecules are loosely packed. Hence, liquids are ineligibly compressible. They have a definite volume but no definite shape and size.
Eg: Water, Milk, Petrol

c) Gas: In gases, molecules are very loosely poked. Hence gases are highly compressible.
Eg: Air, LPG, Oxygen.

Question 2.
Draw a flow chart to indicate the process of making fabrics from cotton ball.
Answer:

VIII. Give Reason:

Question 1.
Why umbrellas are made up of synthetic clothes?
Answer:
Umbrellas are made up of synthetic clothes because synthetic fibres are more hydrophobic than natural fibres. Nylon and polyester, the two fabrics most commonly used in umbrellas. Synthetic are not naturally absorb water like natural fibres. (Cotton, wool).

Question 2.
What determines whether an object floats or sinks in a fluid?
Answer:
Whether an object floats or sinks is determined by its density. When an object is immersed into a liquid, the liquid exerts an upward force on the object. It is known as upthrust. If the weight is greater than the upthrust, it sinks. But it is less on the empty water bottle and so it floats.

Book Activities:

Activity 1.
Look at your surroundings. Give some examples of solid, liquid, and gases.

Answer:

Solids	Liquids	Gases
Stone	Water	Nitrogen
Book	Milk	Oxygen
Metals	Diesel	Hydrogen
Wood	Oil	Chlorine

Activity 2.
Classify the following Natural Fibres:
Polyster, Jute, Silk, Nylon, Cotton, Wool, Acrylic, Rayon.
Answer:

Synthetic Fibres	Natural Fibres
Dacron	Jute
Nylon	Coir
Rayon	Cotton
Acrylic	Wool

 

Activity 3.
Take water in a bucket and drop the following items in the water.
Apple, Scissors, Silver fork, Marbles, Plastic ball.

Fill the table with your observation.

Things	Float	Sink
Apple	Yes	No
Scissors	No	Yes
Silver fork	No	Yes
Marbles	No	Yes
Plastic ball	Yes	No

Activity 4.
Collect some samples of solid substances such as salt, sugar, chalk powder, sand and saw dust.
Take five beakers filled with water and add. a small amount of sugar to the first beaker, salt to the second and similarly, add small amounts of other substances in other beakers. Stir the content with a glass rod. Wait for few minutes. What happens to the substances added? Note your observation.

Answer:

Substances	Disappear in water / Does not disappear / Disappear completely in water
Salt	Disappear completely in water
Sugar	Disappear completely in water
Chalk powder	Does not disappear in water
Sand	Does not disappear in water
Saw Dust	Does not disappear in water

Activity 5.
Collect samples of coconut oil, kerosene, mustard oil, lemon juice, and vinegar. Take five test tubes, fill them up to half with water. Add a spoon full of one liquid to this and stir it well. Keep it in a test tube stand and wait for few minutes. Observe whether the liquid mixes with water. Repeat the experiment with other liquids and tabulate your observation.

Answer:

Liquid	Mixes well	Does not mix
Lemon Juice	Yes	No
Vinegar	Yes	No
Mustard oil	No	Yes
Coconut oil	No	Yes
Kerosene	No	Yes

Samacheer Kalvi 5th Science Guide Organ System Additional Questions and Answers

I. Choose the correct answer:

Question 1.
Which of these is a synthetic fibre.
a) Cotton
b) Jute
c) Rayon
d) Hemp
Answer:
c) Rayon

Question 2.
The natural fibre obtained from animal is ___________.
a) Rayon
b) Nylon
c) Silk
d) Jute
Answer:
c) Silk

Question 3.
__________ is used for making dhotis and sarees.
a) Cotton
b) Jute
c) Coir
d) All the above
Answer:
a) Cotton

Question 4.
A cotton plant is a bushy plant of __________ feet hight.
a) 4-5
b) 5-6
c) 6-7
d) 7-8
Answer:
b)5-6

Question 5.
Which state of matter has a definite shape.
a) liquid
b) solid
c) gas
d) all the above
Answer:
b) solid

II. Fill in the blanks:

Question 1.
_______ is an important process for making fabric from the yarn.
Answer:
knitting

Question 2.
Impurities of the cotton fibre can be removed by the process _______.
Answer:
combing

Question 3.
The world’s most valuable fibre is __________.
Answer:
Vicuna

Question 4.
__________ is used as a sweetener instead of sugar.
Answer:
Corn syrup

Question 5.
The process of making yarn from lint is called _____________.
Answer:
spinning

Question 6.
The artificial fibres are also known as _______.
Answer:
synthetic

III. Match the following:

Question 1.

Answer:

1. b
2. a
3. d
4. c

Question 2.

Answer:

1. b
2. a
3. d
4. c

Question 3.

Answer:

1. b
2. a
3. d
4. c

IV. Say True or False:

Question 1.
Solids are compressible.
Answer:
False

Question 2.
Dacron is an example of artificial fibres.
Answer:
True

Question 3.
The fibrous material left after separating cotton seeds is called lint.
Answer:
True

Question 4.
Barley and maize are grains.
Answer:
True

Question 5.
Maize is also known as rice.
Answer:
False

Question 6.
White rice contains essential nutrients.
Answer:
True

Question 7.
Coir fibre is obtained from the Jute.
Answer:
False

Question 8.
White rice is usually considered much healthier than Brown rice.
Answer:
False

V. Complete the Analogy:

Question 1.
Solids: incompressible:: Gas: _______
Answer:
Compressible

Question 2. Hemp: _______ :: Wool
Answer:
Animal fibre Plant fibre

Question 3.
Maize product: Tortilla chips:: _______ : Pasta
Answer:
Wheat products

Question 4.
_______ : Films:: Nylon: Fishing nets.
Answer:
Polyester

VI. Circle the odd one:

Question 1.
a) Ginning
b) Spinning
c) Filling
d) Weaving
Answer:
Filling

Question 2.
a) Sweet corn
b) Tortilla chips
c) Pasta
d) Taco
Answer:
Pasta

Question 3.
a) Chalk powder
b) Sand
c) Sugar
d) Sawdust
Answer:
Sugar

Question 4.
a) Vinegar
b) Mustard oil
c) Kerosene
d) Coconut oil
Answer:
Vinegar

Question 5.
a) Wool
b)Nylon
c) Rayon
d) Acrylic
Answer:
Wool

VII. Answer briefly:

Question 1.
What is material?
Answer:
A material is a mixture of substances that constitute an object. They can be pure or impure, natural or man-made.

Question 2.
What kind of soil needed for growing cotton?
Answer:
Cotton grows well in black soil and alluvial šoil.

Question 3.
What is cotton balls?
Answer:
The cotton plant bears a large number of small green pods called cotton balls.

Question 4.
What is Ginning?
Answer:
The raw fibres are separated from the seeds by a process known as Ginning.

Question 5.
Mention the two uses of cotton?
Answer:
Uses of cotton

• It is used to manufacture cotton textiles and garments.
• It is used as fillers in pillows and mattresses.
• It used for making surgical bandages.

Question 6.
Why jute fibre is called as Golden fibre?
Answer:
It is also referred to as the golden fibre due to its colour and cost effectiveness.

Question 7.
Write the uses of Jute?
Answer:
Uses of Jute

• It is used for making bags, carpets, curtains and ropes.
• It is used for making clothes for wrapping bales of raw cotton and to make socks for storing grains.
• It is used for making wall hangings for decoration.

Question 8.
What do you mean by synthetic fibre?
Answer:
These fibres are made by human beings with the help of chemical process. Hence, they are called synthetic fibres or manmade fibres.

Question 9.
Give an example of food products made from rice?
Answer:
Rice, idly, Idiappam and Rice aval (Flattened rice) are the food items made from rice.

Question 10.
Will eating millets reduce weight?
Answer:
Yes. It helps in weight loss. It is rich in fibre.

Question 11.
What are household goods?
Answer:

• These are the products that we use in our house.
• The goods that are found in a house permanently are called household goods.
• Household goods are:
  • Furniture
  • Kitchenware,
  • Cloths, Towels,
  • Beddings
  • Boots
  • Electronic goods.

Question 12.
What insoluble substance? Give examples.
Answer:
Substances which do not dissolve in water are said to be insoluble Substance.
Eg. chalk powder, sand, sawdust.

VIII.Answer in Detail :

Question 1.
Write a note on fibres.
Answer:

• Fibre is a thin thread of natural or artificial substances.
• It is used to make clothes with the help of power looms or weaving machines.
• The fibres we get from plants and animals are called natural fibres. Cotton, jute, coir, flax, hemp are examples for plant fibres.

• Wool and silk are examples for animal fibres
• Fibres made by humans by chemical synthesis are called synthetic fibres or artificial fibres.
• Rayon, nylon, acrylic and dacron are examples for artificial fibres.
• These fibres are obtained from petroleum by complex chemical processes.

Question 2.
Write the uses of synthetic fibres.
Answer:

• Rayon is used to make rope, cloth, cap, tyre cords and carpets.
• Nylon is used to make fishing nets/ropes, parachutes, fabrics and bristles for brushes.
• Polyester is used to make fabric for suits and shirts, hoses, conveyer belts, films, PET bottles and wires.
• Acrylic is used to make sweaters, shawls and blankets.

Question 3.
Explain about the solubility of solids in water with examples.
Answer:

• Some substances completely dissolve in water. We say that these substances are soluble in water.
• Other substances do not dissolve in water even after we stir for a long time. These substances are insoluble in water.
• Examples: Salt, Sugar, Chalk powder, Sand, Sawdust

• Wool and silk are examples for animal fibres.
• Fibres made by humans by chemical synthesis are called synthetic fibres or artificial fibres.
• Rayon, nylon, acrylic and dacron are examples for artificial fibres.
• These fibres are obtained from petroleum by complex chemical processes.