What is the Composition of Air?

Air is a mixture of gases that surround us. It is made mostly of nitrogen (about 78%), oxygen (about 21%), and tiny amounts of other gases like carbon dioxide and argon. These gases are very important for us and other living things.

Example: We need oxygen from the air to breathe, and plants use carbon dioxide to make their food.

Fun Fact: Air is invisible, but we can feel it when the wind blows!

Multiple Choice Questions:

1. What is the most common gas in the air?

a) Oxygen

b) Nitrogen

c) Carbon Dioxide

d) Helium

2. Why is oxygen important for us?

a) We use it to swim

b) We need it to breathe

c) It makes us sleepy

d) It has no use

3. Which gas do plants use to make food?

a) Nitrogen

b) Oxygen

c) Carbon Dioxide

d) Hydrogen

4. What can we feel when the air moves?

a) Water

b) Wind

c) Fire

d) Light

5. Is air important for living things?

a) Yes, all living things need air

b) No, they don't need air

c) Only plants need air

d) Only animals need air

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