What is the tendency of pausing air masses over land?
a. They become low pressure systems when they pause.
b. They become high pressure systems when they pause.
c. They take on the characteristics of the land below them.
d. They finally become uniform in temperature, humidity, and density.
ANS: C
Air masses are already characterized as large bodies of air with uniform temperature, humidity, and
density. When air masses pause over land they acquire the characteristics of land. For example, cold,
dry land eventually makes the air mass above it cool and dry. Information can be found in the section
Storms Are Variations in Large-Scale Atmospheric Circulation.
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