On a hot day the upstairs rooms in a house are usually hotter than downstairs rooms. Why?
(Choose the best answer. Hint: the answers are incomplete)

The roof insulation warms the air.
Warm air rises and cool air sinks.
Cool air is less dense than hot air.
heat rises.

Answers

Answered by GPT 3.5
The correct answer is: Warm air rises and cool air sinks.
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