Samacheer Kalvi 4th Science Guide Term 1 Chapter 4 Science in Everyday life

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

Tamilnadu Samacheer Kalvi 4th Science Solutions Term 1 Chapter 4 Science in Everyday life

Samacheer Kalvi 4th Science Guide Science in Everyday life Text Book Back Questions and Answers

I. Choose the correct answer :

Question 1.
Primary source of energy for the young ones of some animals is
(a) Water
(b) Fruits
(c) Milk
Answer:
(c) Milk

Question 2.
Vitamin present in milk that helps us to maintain our bones is
(a) Vitamin-E
(b) Vitamin-C
(c) Vitamin-D
Answer:
(b) Vitamin-C

Question 3.
One of the ancient food items made by human is
(a) Noodles
(b) Cake
(c) Bread
Answer:
(c) Bread

Question 4.
_____________ is a raw food.
(a) Cucumber
(b) Chappatti
(c) Bread
Answer:
(a) Cucumber

Question 5.
A gadget that plays songs is called
(a) Pen drive
(b) Camera
(c) Music player
Answer:
(c) Music player

II. Fill in the blanks :

1. Cheese and paneer are made from _____________.
Answer:
Milk

Question 2.
Nutrients are made ready for digestion by ____________.
Answer:
Cooking

III. Match the following :

Question 1.

Answer:

IV. Answer in a sentence or two :

Question 1.
Name the food products derived from milk.
Answer:
Milk gives curd, butter, butter milk and ghee, cheese, paneer, milk sweets, ice cream and chocolates. ”

Question 2.
Write the names of any three baked foods.
Answer:
Bread, biscuit and cakes are the baked foods.

Question 3.
In what ways a smart phone will help you?
Answer:
Smart phone helps us to communicate, access the internet, store files, take photos and track locations.

Question 4.
What is food?
Answer:

• Food is one of the basic needs of life. Food provides energy and it contains essential nutrients to keep our body healthy.
• It is usually made by cooking plants and animals.

V. Answer in detail :

Question 1.
Cooking removes harmful microbes. Write down other benefits of cooking.
Answer:

• Cooking causes many useful changes in food.
• It makes nutrients ready for digestion.
• It helps to make food in the desired texture, flavour and taste,
• It destroys harmful microbes.

Question 2.
Why should we drink milk?
Answer:
Following are the benefits of milk.

• It strengthens bones and teeth.
• It maintains blood pressure.
• It reduces the risk of heart disease.
• It is a source of energy.

VI. Projects :

Question 1.
List the gadgets you have used.
Answer:
Some of the electronic gadgets used are;

• Laptop
• Mobile phones
• Camera
• Speaker
• Tablets
• Computers
• Electric torch
• Pen drive
• Remote
• Television

Question 2.
Tabulate different kinds of milk products.
Answer:

• Butter
• Cheese
• Yogurt
• Frozen desserts
• Milk chocolates
• Milk sweets
• Paneer

Try to Answer (Text Book Page No. 115)

Question 1.
Milk is a rich source of __________ (Calcium / Iron)
Answer:
Calcium

Question 2.
Milk contains _____________ , __________ , and ___________
Answer:
prof In, fat, vitamin D

Try to Answer (Text Book Page No. 117)

Question 1.
_____________ , ____________ are examples of raw food.
Answer:
Carrot, Cucumber

Question 2.
_____________ , ____________ are examples of cooked food.
Answer:
vegetable curry, bread

Try to Answer (Text Book Page No. 119)

Question 1.
Bread is ___________ (low / high) fat food.
Answer:
low

Question 2.
Biscuits are made from _____________ (wheat flour / rice flour).
Answer:
wheat flour

Question .3.
____________ is associated with birthday celebrations (cake / biscuit).
Answer:
cake

Samacheer Kalvi 4th Science Guide Science in Everyday life InText Questions and Answers

Try to Answer (Text Book Page No. 121)

Question 1.

Answer:

Samacheer Kalvi 4th Science Guide Science in Everyday life Additional Questions and Answers

I. Pick out the odd one :

Question 1.
butter, curd, sugar, milk.
Answer:
Suger

Question 2.
fruits, carrot, ground nuts, rice.
Answer:
Rice

Question 3.
chocolate, bread, biscuit, cake.
Answer:
Chocolate

Question 4.
cutting, boiling, steaming, frying.
Answer:
Cutting

Question 5.
Laptop, T.V., Smart phone, Milk.
Answer:
T.V.

II. Say true or false :

Question 1.
Calcium helps to build healthy bones and teeth
Answer:
True

Question 2.
Bread is an example of baked food items.
Answer:
True

Question 3.
Yeast is used to make biscuits.
Answer:
False

Question 4.
Biscuit is a baked food
Answer:
True

Question 5.
Tablets used to read books
Answer:
True

Question 6.
Pen drive is not a gadget
Answer:
False

III. Match the following :
Question 1.

Answer:

1.  (c)
2.  (a)
3.  (d)
4.  (b)

Question 2.

Answer:

1.  (b)
2.  (a)
3.  (d)
4.  (c)

IV. Choose the correct answer :

Question 1.
Milk has _____________ taste.
(a) Sweet
(b) Sour
(c) Bitter
(d) Tasteless
Answer:
(a) Sweet

Question 2.
Milk has a special sugar called
(a) Lactose
(b) Glucose
(c) Fructose
(d) Galactose
Answer:
(a) lactose

Question 3.
___________ in milk helps to maintain the bones.
(a) Vitamin-D
(b) Vitamin-C
(c) Vitamin-A
(d) Vitamin-B
Answer:
(a) Vitamin-D

Question 4.
Bread spoils ______________ faster when kept in fridge.
(a) 6 times
(b) 2 times
(c) 4 times
(d) None of the above
Answer:

(a) 6 times

IV. Fill in the blanks :

Question 1.
Milk helps to build _____________.
Answer:
Muscles

Question 2.
Fat present in the milk is called ____________.
Answer:
Butter

VI. Answer the following questions in one or two sentences :

Question 1.
What are the sources of milk?
Answer:
Milk is primarily obtained from mammals. They are obtained from other sources too.
Examples: Soya milk, nut and seed based milk.

Question 2.
Write 4 health benefits of milk.
Answer:

• It strengthens bones and teeth.
• It maintains blood pressure.
• It reduces the risk of heart disease.
• It is a source of energy.

Question 3.
What are the main ingredients of biscuit?
Answer:
The main ingredients of biscuit are flour, sugar, butter, water, milk, baking powder and flavours.

Question 4.
What is the use of pen drive?
Answer:
It is a small gadget used for storing and transferring any type of file in / from a computer.

Question 5.
Write the classification of milk.
Answer:
Based on the amount of fat present in the milk, it can be classified as Whole milk, Low fat milk and Fat free milk.

Question 6.
What is meant by raw food?
Answer:
Raw food is the food that does not have to be cooked to eat.
Examples: Fruits, carrot, ground nut seeds.

Question 7.
What is a gadget?
Answer:
A gadget is a small electronic machine or device which does something useful. They make our life enjoyable.
Examples: Laptop, Phone.

Question 8.
What is the use of the portable music player?
Answer:
It stores and plays thousands of songs. We can listen to songs anywhere, anytime.

VII. Answer the detail :

Question 1.
Write a note on Bread.
Answer:

• Bread is a common food product prepared from dough by baking. It is an important source of energy for sick people. It is also one of the ancient foods made by humans. Bread is a low fat food.
• Bread has the nutrients required for normal development and good health.
• To make bread we need wheat flour, yeast, water, sugar and salt.