(i) Why do freezers in freeze are always at top?

(ii) Why does hot air rise and cold air sink?


Expert Answer:

(i) Freezers are always located at the top of the refrigerators so as to easily circulate the cold air downwards and keep the refrigerator cold.

(ii) Cool air is more dense than warm air, so the cool air falls through the warm air. Warm air being light rises up.
