The elevation at which the bottoms of clouds begin to form represents the elevation at which
A)evaporation occurs.
B)relative humidity reaches 100 percent.
C)absolute humidity reaches 100 percent.
D)ice turns to water.
E)the mixing ratio reaches 4.

Question

Quizplus · Accepted Answer

The elevation at which the bottoms of clouds begin to form represents the elevation at which relative humidity reaches 100 percent. This occurs when the air near the surface of the Earth rises and cools, causing water vapor to condense into visible water droplets or ice crystals, forming clouds.

The Elevation at Which the Bottoms of Clouds Begin to Form