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E XE R C I S E

A. Tick () the correct answer.
1. All living things need Air\mountain to breathe and survive.
2. We cannot touch, see and taste air/water.
3. Air contains water/dust particles.
4. Dust/Plant makes our air polluted.
5. Germs in the air make us fit/ill.

B. Fill in the blanks with the given clues.
1. We need _______________ to breathe and survive.
2. We can_______________ air.
3. Dust particles carry _______________ .
4. Air takes up _______________ .

Clues feel,space, air, germs

C. Very Short Answer Questions.
1. Can we see air?
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2. What does air contains? Give two examples.
___________________________________________________________

D. Short Answer Questions.
1. Write the properties of air.
___________________________________________________________
___________________________________________________________
2. How can you make air clean?
___________________________________________________________
___________________________________________________________
3. What does a light coming into a dark room contain? Explain.
___________________________________________________________
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