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CBSE Worksheet-03

CLASS - IV EVS Water

Answer the following questions:

1. What is rain water harvesting?

_________________________________________________________________________________________________

_________________________________________________________________________________________________

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2. List any three ways to save water.

a) _____________________________________________________________________________________________

b) _____________________________________________________________________________________________

c) _____________________________________________________________________________________________

3. Name any three uses of water.

a) _____________________________________________________________________________________________

b) _____________________________________________________________________________________________

c) _____________________________________________________________________________________________

4. Name any three types of pollution.

a) _____________________________________________________________________________________________

b) _____________________________________________________________________________________________

c) _____________________________________________________________________________________________

5. What is meant by ground water?

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6. Name the three forms of water.

a) _____________________________________________________________________________________________

b) _____________________________________________________________________________________________

c) _____________________________________________________________________________________________

7. Name any three rivers in India.

a) _____________________________________________________________________________________________

b) _____________________________________________________________________________________________

c) _____________________________________________________________________________________________

8. Name any three activities which you cannot do without water.

a) _____________________________________________________________________________________________

b) _____________________________________________________________________________________________

c) _____________________________________________________________________________________________

9. Why do we feel hot and sticky on a rainy day?

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10. What is meant by water cycle?

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Answers

1. What is rain water harvesting?

Rainwater harvesting is a method of collecting, storing and conserving local

surface runoff rain water.

2. List any three ways to save water.

a) Use low-flow shower heads.

b) Check your plumbing for leaks.

c) Use environmentally friendly cleansers.

3. Name any three uses of water.

a) Drinking

b) Washing clothes

c) Cooking

4. Name any three types of pollution.

a) Air pollution

b) Water pollution

c) Land pollution

5. What is meant by ground water?

Some of the rain water goes into the soil and this water is called ground water.

6. Name the three forms of water.

a) Ice

b) Water vapour

c) Steam

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7. Name any three rivers in India.

a) Mahanadi

b) Ganges

c) Narmada

8. Name any three activities which you cannot do without water.

a) Washing clothes

b) Cooking

c) Bathing

9. Why do we feel hot and sticky on a rainy day?

This is because the amount of water vapour in the air is very high during rainy

day.

10. What is meant by water cycle?

Water gets heated and goes up as vapour. It then cools down and falls to earth as

rain. This continuous process is called the water cycle.