As air sinks in a valley fog,it
A)cools adiabatically but it is still cooler than the surrounding air; the surrounding air is cooled to the dew point.
B)warms adiabatically but it is still cooler than the surrounding air; the surrounding air is cooled to the dew point.
C)warms adiabatically but it is still warmer than the surrounding air; the surrounding air is warmed to the dew point.
D)cools adiabatically but it is still warmer than the surrounding air; the surrounding air is cooled to the dew point.

Question

Quizplus · Accepted Answer

As air sinks in a valley, it warms adiabatically due to adiabatic compression. However, this air is still cooler than the surrounding air. As this cooler air sinks, it mixes with the warmer, moisture-laden air near the surface, causing the latter to cool to its dew point and resulting in the formation of valley fog. Therefore, option B is the correct choice.

As Air Sinks in a Valley Fog,it