Question

B. Mark for true and X for false statements.
1. A fan makes air move.
2. Air is present everywhere.
3. Trees sway when there is no wind.
4. Aeroplanes cannot fly without air.
C. Answer the following questions.
1. What is wind?
2. Name three things which work because of air.​

Answer 1

Answer:

false

true

false

false

Wind is moving are.oxygen and nitrogen makes up most of earth's air molecules.As air heats up and wols down ,it also exerts air pressure which is like the weight of air and a download force.

1.perfume bottels.

2.lifting of an airplane.

3.playing musical instrument.

4.suking up juice from straw.

I had given ur ans .hope it's useful to u .so please mark me as a brain list......

Answer 2

Answer:

1.true

2.true

3.false

4.false

5.wind is the flow of gases on a large scale . on the surface of the earth,wind consists of the bulk movement of air

6. perfume bottles ,

lifting of an aeroplanes ,

playing musical instruments,

sucking up juice from straw ....

....

I think answer is correct