Page 62 - EVS Class 02

g Air helps an aeroplane to fly.

g Air helps in sailing a boat and hot air balloon to fly.
Air Pollution

When air become dirty, it is called air pollution. Air pollution occurs

due to smoke from various sources. Request people not to smoke.

* Air is all around us.

* Moving air is called Wind.
* When air blows gently it is called breeze.
* Air has weight and occupies space.
* When we make the air dirty it is called air pollu on.

A. Answer the following questions.

1. Why do we need air?

2. How does air help the plants?

3. Write the properties of air.

4. Write various uses of air.
5. What is air pollution?

B. Fill in the blanks.
1. We can ____________ moving air.

2. Air pollution occurs due to ____________ from various sources.

3. Air is a ___________ of gases.

4. Air has ____________ .

5. Diver need oxygen to _______________ .

C. State whether the following statements are right or wrong .

1. All living beings need air to live.

2. Air can be hot or cold.

3. Factories and smoke make the air polluted.

EVS-2
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