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D. Tick () the correct op on.

1. The process in which water changes to vapour is called:
a. Condensa on
b. Desalina on
c. Photosynthesis
d. Evapora on

2. Salty water can be made fresh by:
a. Condensa on
b. Desalina on
c. Photosynthesis
d. Evapora on

3. In salt farms the sea water is trapped and exposed to the:
a. Sun
b. Moon
c. Stars
d. Dust

4. Water can be preserved by prac cing:
a. Rain dance
b. Rain water purifica on
c. Rain water harves ng
d. Crop harves ng

5. When harmful substances flow into water, it becomes:
a. Purified
b. Polluted
c. Fresh
d. Colourful

Exercise (Summa ve Assessment)

TRY THIS

We need to save water. Tell us how you would encourage people to save water in
your locality. Write in a small paragraph.

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