At 40°F,the atmosphere is saturated with water vapor.If the air temperature increases to 60°F,with no addition or removal of water vapor,one may conclude that the dew point is about
A) 20°F.
B) 40°F.
C) 60°F.
D) 100°F.

Question

Quizplus · Accepted Answer

The dew point is the temperature at which the air becomes saturated and condensation occurs. If the air temperature increases from 40°F to 60°F, with no addition or removal of water vapor, then the relative humidity will decrease. However, since the air was originally saturated at 40°F, this means that the dew point must be 40°F. Therefore, the correct answer is B.

At 40°F,the Atmosphere Is Saturated with Water Vapor