Question

Cool air sinks and warm air rises up give reason

Answer 1

Cool air sinks and warm air rises up because density of Cool air have more than density of warm air.

Answer 2

HLO FRND_____^

(a)due to pressure

(b)due to density 

(c)due to gravity

(d)due to velocity

(a)due to pressure(b)due to density (c)due to gravity(d)due to velocity



A)

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Solution :

Hot air rises because when you heat air ,it expands.

When the air expands, it becomes less dense than the air around it.When something is hot, its molecules are farther apart than when it is cold.So it takes up more room.

that makes hot air lighter than cold air, because the cold air has more molecules in the same amount of room..

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