Question

explain the formation of sand dunes

Answer 1

A dune is a mound of sand formed by the wind, usually along the beach or in a desert. Dunes form when wind blowssand into a sheltered area behind an obstacle. Dunes grow as grains ofsand accumulate. Every dune has a windward side and a slipface.

Answer 2

Answer:

Winds erode the lower section of the rock more than the upper part. Therefore such rocks

have narrower base and wider top. When wind blows , it lifts and transport sand from one place

to another . When it stops blowing the sand falls and gets deposited in low hill like structures and

these are called sand dunes