Question

With the help of an activity; describe that warm air is lighter and therefore rises up

on heating.​

Answer 1

Answer:

Take two paper bags of the same size and hang them in inverted position on the two ends of a wooden stick. ... Place a burning candle below one of the bags. The bag above the candle goes up, as the air above the candle becomes warm, it rises, and pushes the bag up.

Explanation:

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Answer 2

This Activity shows that the warm air is lighter and therefore rises up .