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Density of Hot and Cold Air

What happens ...

Question

What happens to air when it is heated?

A

Contracts only

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B

Expands only

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C

Neither expands nor contracts

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D

Both expands and contracts

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Solution

The correct option is B Expands only
Hot air molecules have more space between them than cool air molecules. Therefore, when we heat air, it expands to allow more space for the molecules. If air is cooled, it contracts.

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