Question

describe the activity demonstrative that warm s lighter than cool air

Answer 1

Answer:

Activity:

Take two paper bags of the same size and hang them in inverted position on the two ends of a wooden stick.

Tie a thread in the centre of the stick and hold the stick by the thread to balance it.

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.