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

Tamilnadu Samacheer Kalvi 5th Social Science Solutions Term 2 Chapter 2 Hydrosphere

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

Evaluation

I. Choose the correct answer:

Question 1.
Hydrosphere is the total amount of _______ present on earth.
a) Air
b) Water
c) Land
d) Plants
Answer:
b) Water

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

Question 2.
Select the odd one out.
a) Arabian
b) Indian
c) Arctic
d) Pacific
Answer:
a) Arabian

Question 3.
Water body that is surrounded by land on all sides is called _______.
a) River
b) Gulf
c) Lake
d) Bay
Answer:
c) Lake

Question 4.
Evaporation is the _______ stage of the water cycle.
a) First
b) Second
c) Third
d) Fourth
Answer:
a) First

Question 5.
Water body that is partially enclosed by land and has wide opening to the sea is called _______.
a) Sea
b) Strait
c) Bay
d) Pond
Answer:
c) Bay

II. Match the Following:
Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere 1
Answer:
Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere 2

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

III. True or False:

Question 1.
About 97.5% of water on the earth is salt water.
Answer:
True

Question 2.
Water is not necessary for our basic needs.
Answer:
False

Question 3.
Water in the sea is sweet.
Answer:
False

Question 4.
We should keep the tap open throughout while washing utensils.
Answer:
False

Question 5.
We should save water.
Answer:
True

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

IV. Answer the following :

Question 1.
Define hydrosphere.
Answer:
Hydrosphere is the total amount of water present on a planet. The hydrosphere includes water that is present on the surface of the planet, underground, and in the air.

Question 2.
Why is the hydrosphere important?
Answer:
We need water to carry out many activities in our daily lives. We need water to drink, take bath, cook food, etc. Animals and plants also need water for their survival. If there is no water, it cannot evaporate and form clouds. So there will not be any rain.

Question 3.
Name the different types of water bodies.
Answer:
Oceans, Seas, Rivers, Lakes, Gulf. Bay, Lagoon, Strait, Waterfall.

V. Answer the following in detail :
Question 1.
What are the different stages of water cycle?
Answer:
Stage I : Evaporation – The heat of the sun falls on the water bodies like Ocean, Sea, Lakes, Rivers, etc. The water slowly evaporates as vapours into the air.

Stage II: Condensation – As the vapours rise high, the cooler temperatures make them cool down and turn back into liquid. This is called condensation. Wind and air move the liquid around, leading to the formation of clouds.

Stage III: Precipitation – Wind movements cause the clouds particles to collide. They become rain-bearing clouds and fall back on to the earth’s surface by the process known as precipitation. This may occur in the form of rain, hail, snow, or sleet depending upon the temperature conditions.

Stage IV: Runoff and Infiltration – The water either runs off into oceans, rivers and ground surface or is absorbed into the soil (infiltration). This cycle continues.

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

Question 2.
Give few steps to save water.
Answer:

  • Check your toilet for leaks.
  • Take shorter showers.
  • Turn off the water while brushing your teeth.
  • Check faucets and pipes for leaks.
  • Use your automatic dishwater for full loads only.
  • Water during the cool parts of the day.

Activity:

Question 1.
List out the uses of water in our daily life.
Answer:

  • Domestic purpose: cooking, drinking, bathing, washing.
  • Agricultural purpose: Farming, gardening, fishing.
  • Industrial purposes: Manufacturing.
  • Recreation: Swimming, rafting, boating.
  • Hydropower: generation.

Think Zone:

Question 1.
What other water sources can be a part of the Hydrosphere?
Answer:
The hydrosphere includes water storage areas such as Oceans, Lakes, Ponds, Rivers, seas.

Question 2.
Name some water bodies in your locality.
Answer:
Oceans, Seas, Rivers, Ponds, Waterfalls.

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

Samacheer Kalvi 5th Social Science Guide Ancient Excavation Additional Questions and Answers

I. Choose the correct answer.
Question 1.
_______ is the total amount of water present on a planet.
a) Hydrosphere
b) Lithosphere
c) Atmosphere
d) Biosphere
Answer:
a) Hydrosphere

Question 2.
_______ are vast water bodies that usually separate continents from one another.
a) Oceans
b) Seas
c) Rivers
d) Ponds
Answer:
a) Oceans

Question 3.
A _______ is a large area of an ocean or a sea that is surrounded by land.
a) Rivers
b) Lakes
c) Gulf
d) Bay
Answer:
c) GuIf

Question 4.
Wind movements cause the clouds particles to collide is _______.
a) Evaporation
b) Condensation
c) Precipitation
d) Infiltration
Answer:
c) Precipitation

II. Match the Following:

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere 3
Answer:

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

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

III. True or False:

Question 1.
Hydrosphere covers about 97% of the planet Earth.
Answer:
False

Question 2.
Animals and plants also need water for their survival.
Answer:
True

Question 3.
Sea water is salty in nature.
Answer:
True

Question 4.
A lake is a body of water, which is partially enclosed by land.
Answer:
False

Question 5.
Do not put plastic garbage when you go near beaches.
Answer:
True

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

IV. Answer the following:

Question 1.
What is Lagoon?
Answer:
A lagoon is a lake separated from the open sea by sand or rocks. Lake Chilika in Odisha, India is an example of a lagoon.

Question 2.
What is strait? Give example.
Answer:
A strait is a narrow stretch of water which joins two larger water bodies. Example: Palk Strait joining the Bay of Bengal and the Indian Ocean.

Question 3.
What is waterfall? Give example.
Answer:
Water falling when a river flows over an edge of hard rocks from a great height is called waterfall.

Example: Courtallam Waterfall.

Samacheer Kalvi 5th Social Science Guide Term 2 Chapter 2 Hydrosphere

V. Answer the following in detail:
Question 1
Describe any five types of water bodies.
Answer:
Seas: Seas are also vast water bodies but smaller than oceans in size. They are partly closed by land and opens up to the Ocean. Sea water is salty in nature.
Example: Arabian Sea.

Rivers: Rivers are large streams that flow over the land. Rivers are fresh water bodies which generally begin at mountainous areas. They usually drain in oceans or seas.

Lakes: A lake is a water body surrounded by land on all sides. Lakes can have salt or fresh water. Example: Dal Lake.

Gulf: A gulf is a large area of an ocean or a sea that is surrounded by land.
Example: Gulf of kutch.

Bay: A bay is a body of water, which is partially enclosed by land. It has a wide-mouthed opening of land and is joined to the sea or other large water bodies.
Example: Bay of Bengal

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