When saturation occurs below 0 degrees Centigrade:
A)dew forms.
B)frost forms.
C)nothing forms. Moisture becomes inert.
D)the relative humidity becomes undefined.

Question

Quizplus · Accepted Answer

When saturation occurs below 0 degrees Centigrade, the moisture in the air can still undergo phase change from gas to solid due to sublimation, resulting in the formation of frost. Dew forms when saturation occurs above 0 degrees Centigrade. Choice C is incorrect since moisture can still undergo phase change even at low temperatures. Choice D is also incorrect since relative humidity can be calculated even in sub-zero temperatures.

When Saturation Occurs Below 0 Degrees Centigrade