Question
What happens to air when it is heated?
Answer: Option B
:
B
Air expands on heating. Hot air molecules have more kinetic energy, so theyhavemore 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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:
B
Air expands on heating. Hot air molecules have more kinetic energy, so theyhavemore 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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