What is a cause of atmospheric circulation?
a. The temperature of Earth's surface
b. Conduction currents
c. The amount of reflection of solar radiation
d. The Coriolis Effect
ANS: D
The uneven heating of the Earth's surface and the Coriolis Effect is what causes atmospheric
circulation. The warm air rises and the cool air sinks. A convection current results from the difference
in air density. Circulation is further moved by the deflection of moving air and water due to the
rotation of the Earth. Information can be found in the section The Atmosphere Moves in Response to
Uneven Solar Heating and Earth's Rotation.
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