Clouds, dew and frost all form because air has become saturated. This condition of saturation is USUALLY caused by:
A) an abundance of condensation nuclei.
B) the air being cooled.
C) adding water vapor.
D) lack of convective mixing.
E) a temperature increase.

Question

Quizplus · Accepted Answer

When air is cooled, its capacity to hold water vapor decreases. As a result, the excess water vapor condenses into liquid droplets or ice crystals, leading to the formation of clouds, dew, or frost. Choice A is partially correct as an abundance of condensation nuclei can aid in the formation of clouds, but it is not the primary cause of saturation. Choice C is incorrect because adding water vapor will increase humidity levels but will not necessarily cause saturation. Choice D is incorrect because convective mixing can actually help to prevent saturation by continuously mixing moist and dry air. Choice E is incorrect because an increase in temperature will actually increase the air's capacity to hold water vapor, making saturation less likely.

Clouds, Dew and Frost All Form Because Air Has Become