Question

What do you know about dunes?

Answer 1

Explanation:

dunes are large masses of wind blown sand and most common in deserted environments

Answer 2

Explanation:

WHAT ARE DUNES?

A dune is a mound of sand formed by the wind, usually along the beach or in a desert.

FORMATION OF DUNES:

Dunes form when wind blows sand into a sheltered area behind an obstacle. Dunes grow as grains of sand accumulate. Every dune has a windward side and a slipface.

CHARACTERISTICS OF DUNES:

Sand Dunes have —

• a gentle slope on the side the wind blows against
• a steep side on the sheltered side (30-34 degrees) a crest (top of the sand dune) up to 15 metres.

IMPORTANCE OF DUNES:

• they protect inland areas from coastal water intrusion
• they are able to absorb the impact and protect inland areas from high energy storms and act as a resilient barrier to the destructive forces of wind and waves.