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Question
What happens to air when it is heated?
What happens to air when it is heated?
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Solution
The correct option is B Expands
Air expands on heating. Hot air molecules have more kinetic energy, so they 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 because cool air molecules have less kinetic energy.
Expands
Air expands on heating. Hot air molecules have more kinetic energy, so they 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 because cool air molecules have less kinetic energy.
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