Ch – 4 Air (Q-A)

Q: Answer the following questions:

a) What is atmosphere ?

Ans: A huge blanket of air around the earth is known as atmosphere.

b) Which two gases make the bulk of the atmosphere ?

Ans: Nitrogen and Oxygen are the two gases which make the bulk of the atmosphere.

c) Which gas creates green house effect in the atmosphere ?

Ans: Carbon dioxide creates green house effect in the atmosphere.

d) What is weather ?

Ans: Weather is hour-to-hour, day-to-day condition of the atmosphere.

e) Name three types of rainfall.

Ans: Cyclonic, Relief (Orographic) and Convectional

f) What is air pressure ?

Ans: The pressure exerted by the weight of air on the earth’s surface is known as air pressure.

Published by Priya Prakash

In the midst of winter, i found there was within me an invincible summer ~ Albert Camus

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