Consider temperatures that are below freezing. Which of the following describes the temperature to which air must be cooled for a phase change to occur?
A)frost point
B)dew point
C)wet bulb
D)heat index

Question

Quizplus · Accepted Answer

The frost point is the temperature to which air needs to be cooled for moisture in the air to transform directly into ice crystals (frost) without becoming a liquid first. This typically occurs on surfaces such as grass, cars, and windows when the ground temperature is below freezing and the dew point temperature is also below freezing.

Consider Temperatures That Are Below Freezing