The density of air depends on its temperature - warm air is less dense than cooler air.

Name: The density of air depends on its temperature - warm air is less dense than cooler air.
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Question

Quizplus · Accepted Answer

As per the ideal gas law, the density of a gas is directly proportional to its pressure and inversely proportional to its temperature. Therefore, warmer air has less density as its molecules are moving around at a higher speed and thus are farther apart, resulting in less mass per unit volume.

The Density of Air Depends on Its Temperature - Warm