The steepest side of a dune has a maximum angle of about
A)5°.
B)10°.
C)34°.
D)65°.
E)85°.

Question

Quizplus · Accepted Answer

According to research, the steepest side of a dune has a maximum angle of about 34°, which is Choice C. This angle is called the angle of repose, and it represents the maximum slope that a loose material like sand, rock, or soil can maintain without collapsing due to gravitational forces. Any slope greater than the angle of repose will cause the material to slide down and form a flatter slope. Therefore, Choice C is the best answer.

The Steepest Side of a Dune Has a Maximum Angle