Question

Heated air expands and rises up this process is called --------​

Answer 1

Answer:

This causes the molecules to 'spread out' – a phenomenon called thermal expansion. Initially, the gas (air) molecules inside and outside the bottle are at the same temperature and therefore, moving at the same speed. Air molecules collide into the balloon with the same energy inside and outside the balloon.

Answer 2

Convection is the process by which Heated air expands and rises up

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