Clouds generally form when air ________.
A) is heated
B) rises
C) sinks
D) is devoid of aerosols

Question

Quizplus · Accepted Answer

Clouds generally form when air rises. As air rises, it cools and the moisture in the air can condense into visible water droplets or ice crystals, forming clouds. Heating air can also cause it to rise, but sinking air does not typically lead to cloud formation. The presence or absence of aerosols (tiny particles in the air) can affect cloud formation, but it is not the main factor in determining whether clouds form or not.

Clouds Generally Form When Air ________