Question

what makes the sand dunes move?
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Answer 1

Answer:

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Explanation:

Sand can only be moved by strong, steady winds. ... As the wind blows, it lifts small sand grains a few inches off the ground, then drops them. When they hit the ground, they bump into other sand grains and cause them to jump up and be caught by the wind.

Sand dunes are masses of loose sand that move across the ground in wind. The grains are blown up the windward side of a dune until they reach the top; then they drop down into the shelter of the lee (the side away from the wind). Other grains are blown up and over, burying the first. This continued action moves the dune across the landscape.