Class 9 · Social Science · Understanding Society: India and Beyond - Part I

3. Atmosphere and Climate

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The lowest layer of the atmosphere, where weather happens, is the

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Answer and explanation

Answer: B. troposphere

Clouds, rain and storms occur in the troposphere.

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Try question 2

The gas present in the largest amount in the atmosphere is

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Answer and explanation

Answer: B. nitrogen

Nitrogen makes up about 78% of the air.

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Try question 3

Climate means

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Answer and explanation

Answer: B. the average weather of a place over a long period

Climate is the long-term pattern (usually 30+ years); weather is day-to-day.

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