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2. The water stored in dams is used for:

(i) electricity (ii) irrigation (iii) both (a) & (b)
3. Drip irrigation helps in reducing the wastage of:

(i) soil (ii) water (iii) equipment

4. Our Earth is also called:

(i) Red planet (ii) Yellow planet (iii) Blue planet

5. Surface water is also called:

(i) store (ii) fresh (iii) dirty

C. Fill in the blanks:

1. A piece of equipment used for sprinkling water on plants is called a

____________.

2. ____________ canal is a very important source of irrigation for the
farmers in Rajasthan.

3. ____________ is our main source of freshwater.
4. Natural resource are of ____________ types.

5. A large amount of rainwater flows into ____________ , ____________

and____________.

D. Write ‘T’ for true and ‘F’ for false statement:

1. A natural resource is something that is made by humans.

2. All natural resources are renewable.
3. Rainfall is the main source of fresh water.

4. Petrol and diesel are made out of aluminium.

5. Only 2.8 percent of the water available on the Earth can be used

by humans.
E. Answer the following questions:

1. What is the natural resources?

_____________________________________________________________

2. Define the two type of natural resources.

_____________________________________________________________

3. How is water useful in irrigation?

_____________________________________________________________

Social Studies-4 57