Question

What are sand dunes?​

Answer 1

Answer:

A dune is a landform, and is a large mass of wind-blown sand. Dunes are most common in deserted environments, such as the Sahara, and also near beaches. An area with dunes is called a dune system. The dynamic action of wind and water can sometimes causes the dunes to drift, which can have serious consequences.

Explanation:

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Answer 2

Answer:

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A dune is a landform, and is a large mass of wind-blown sand. Dunes are most common in deserted environments, such as the Sahara, and also near beaches. An area with dunes is called a dune system. The dynamic action of wind and water can sometimes causes the dunes to drift, which can have serious consequences.

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TYPES OF SAND DUNES :

transverse, Linear/longitudinal, star, barchan, and parabolic

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Wind coming from all directions generates star dunes.

Wind coming from all directions generates star dunes.Barchan and parabolic dunes can look very similar but the main difference is the direction of the wind in relation to the top of the crescent shape. The top of the crescent faces the wind direction in barchans and the top of the crescent is orientated in the same direction as the wind in parabolic dunes.

Wind coming from all directions generates star dunes.Barchan and parabolic dunes can look very similar but the main difference is the direction of the wind in relation to the top of the crescent shape. The top of the crescent faces the wind direction in barchans and the top of the crescent is orientated in the same direction as the wind in parabolic dunes.The direction of the wind also creates the main difference between transverse and linear dunes

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Sand dune types are determined by shape. The shape of a sand dune is dependent on the strength of the wind and on the sand type.

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