The wind's speed generally increases with height above the earth's surface because
A) only the lowest layer of air rotates with the earth.
B) air temperature normally decreases with height.
C) wind instruments are not accurate at the earth's surface.
D) friction with the earth's surface slows the air near the ground.
E) air parcels expand and become less dense as they rise above the surface.

Question

Quizplus · Accepted Answer

Friction with the earth's surface slows down the wind near the ground, so as you move higher, the effect of friction decreases, allowing the wind speed to increase.

The Wind's Speed Generally Increases with Height Above the Earth's