Which side of a dune typically has a slope angle equal to that of the angle of repose for sand?
A)Top
B)Leeward
C)Windward
D)Stoss

Question

Quizplus · Accepted Answer

The leeward side of a dune typically has a slope angle equal to that of the angle of repose for sand. This is because the windward side of the dune is constantly being eroded by the wind, which carries away sand grains. The sand grains that are carried away are deposited on the leeward side of the dune, which causes the slope angle to increase. Eventually, the slope angle will reach the angle of repose for sand, which is the steepest angle at which sand can be deposited without collapsing.

Which Side of a Dune Typically Has a Slope Angle