Question

what happens to the cooler air​

Answer 1

Air colling is a method of dissipating heat. It works by expanding the surface are or increasing the flow of air.

Answer 2

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As the molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.

Hope it helps!