Q1 of 8 Page 74

Multiple choice question.

Which one of the following gases is transparent to incoming solar radiation and opaque to outgoing terrestrial radiation?


Carbon dioxide in the earth’s atmosphere is transparent to the incoming solar radiation and opaque to outgoing terrestrial radiation. So it large accounts for greenhouse effect.

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1

Multiple choice question.

Sea salt, pollen, ash, smoke soot, fine soil — these are associated with:


 1

Multiple choice question.

Oxygen gas is in negligible quantity at the height of atmosphere:


 2

Answer the following questions in about 30 words.

(i) What do you understand by atmosphere?


(ii) What are the elements of weather and climate?


(iii) Describe the composition of atmosphere.


(iv) Why is troposphere the most important of all the layers of the atmosphere?


 3

Answer the following questions in about 150 words.

(i) Describe the composition of the atmosphere.


(ii) Draw a suitable diagram for the structure of the atmosphere and label it and describe it.