The cooling rate for expanding dry air is about 10ºC cooling for each km gain in altitude.The cooling rate observed when water vapor in the air condenses is
A)generally greater.
B)generally lesser.
C)the same.
D)sometimes greater, sometimes lesser.

Question

Quizplus · Accepted Answer

When water vapor condenses, it releases latent heat, which reduces the rate of cooling compared to dry air. Thus, the cooling rate is generally lesser.

The Cooling Rate for Expanding Dry Air Is About 10ºC