The shape of a sand dune reveals the prevailing wind direction that existed during its formation.

Question

Quizplus · Accepted Answer

As the sand dune forms by wind blowing sand particles, the direction of the wind determines the shape of the dune, with the steep side (windward slope) facing the windward side from which wind is blowing, and the gentler side (lee slope) facing the opposite direction. Therefore, the shape of a sand dune provides evidence of the prevailing wind direction.

The Shape of a Sand Dune Reveals the Prevailing Wind