The chief difference between fog and a cloud is
A)the water droplets are smaller in clouds.
B)the humidity is greater in fog.
C)fog forms only at night.
D)the altitude of the tiny water droplets.

Question

Quizplus · Accepted Answer

The chief difference between fog and a cloud is the altitude of the tiny water droplets. Fog forms at ground level or very close to it, while clouds form much higher in the atmosphere. Therefore, option D is the best choice.

The Chief Difference Between Fog and a Cloud Is