In hilly areas, in which of the following places does cold air typically collect?
A)on vegetated hillsides
B)in valleys
C)on bare hillsides
D)on hilltops

Question

Quizplus · Accepted Answer

Cold air is denser than warm air and therefore sinks towards the valley floor, eventually collecting in low lying areas or valleys. This is known as a temperature inversion. Vegetated and bare hillsides may also influence the movement and direction of cold air, but the lowest point in the landscape, such as a valley, is where it will collect. Hilltops are generally exposed to more wind and will be less likely to collect cold air.

In Hilly Areas, in Which of the Following Places Does