Sand grains move over the crest and down the _____________ on active sand dunes.

Question

Quizplus · Accepted Answer

The slip face is the steep downwind slope of an active sand dune where sand grains move over the crest and down. The bedding planes refer to the horizontal layers within the sedimentary rock, while the windward side is the side of the dune facing the direction of the wind. The direction of dune migration could also be a factor in the movement of sand grains, but it is not as specific as the slip face. Therefore, the best choice is D) slip face.

Sand Grains Move Over the Crest and Down the _____________