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

 

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.

1. Music player -  Communicates with the world

2. Smart phone - Stores data 

3. Electric torch - Plays games

4. Pen drive - Provides light

5. Tablet - Plays music

III  Match the following.

1. Music player - Plays music

2. Smart phone - Communicates with the world

3. Electric torch - Provides light

4. Pen drive - Stores data

5. Tablet - Plays games

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

தமிழ் கல்வி

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:

protein, 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

Try to Answer (Text Book Page No. 121)

Question 1.

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