Ch – 4 Air ( Objectives )

Q: Tick the correct answer:

a) Which of the following gases protects us from harmful sun rays ?

Ans: Ozone

b) The most important layer of the atmosphere is _____________.

Ans: Troposphere

c) Which of the following layers of the atmosphere is free from clouds ?

Ans: Stratosphere

d) As we go up the layers of the atmosphere is, the pressure ____________.

Ans: falls rapidly

e) When precipitation comes down to the earth in the liquid form, it is called _____________.

Ans: Rain

Q: Match the following:

i) Trade winds – Permanent wind

ii) Loo – Local wind

iii) Monsoon – Seasonal wind

iv) Wind – Horizontal movement of air

Published by Priya Prakash

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

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