Question

Q.9.What is meant by saying that 'air expands on heating'?​

Answer 1

Answer:

Air expands on heating. ... It is because the particles of air on becoming warm, move away from each other and take up more space. So we can say that air on becoming hot occupies more space. Since the particles move away from each other, the air becomes less dense and lighter in weight. As a result, warm air rises up.

Answer 2

Answer:

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Explanation:

Air expands on heating- It is because the particles of air on becoming warm, move away from each other and take up more space. So we can say that air on becoming hot occupies more space. Since the particles move away from each other, the air becomes less dense and lighter in weight. As a result, warm air rises up