Question
How cloud is formed?
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Answer
The evaporated water above the earth surface is carried away by warm air. As the warm air moves higher from the surface of the Earth, it starts to cool down. It is because the water vapour present starts to condense to form tiny water droplets. These droplets float in the air and form cloud.
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Match Column I with Column II. There can be more than one match.
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Column I
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Column II
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$(a)$
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On henating air
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$(i)$
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Descends
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$(b)$
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On cooling
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$(ii)$
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Expands
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$(iii)$
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Contracts
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$(iv)$
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Rises
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