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How can wind shape Earth?

•When wind moves soil, sand, and rock particles, it acts as an agent of erosion.

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•The removal of fine sediment by wind is called deflation.

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How can wind shape Earth?

Wind can shape the Earth in following ways:

1. desert pavement

2. dunes

3. loess

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How can wind shape Earth?

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•Desert pavement results when wind carries soil and fine sediment away from an area, leaving only pebbles and small rocks behind.​

•Dunes are mounds (تلال)  of wind-deposited sand, common in deserts and along the shores of lakes and oceans.

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•Dunes usually move in the same direction the wind is blowing.

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•Loess consists of thick deposits of windblown, fine-grained sediment.

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•Loess forms good soils for growing crops.

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•A glacier is a large mass of moving ice that forms by the compacting of snow by natural forces.

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•Glaciers move downhill by gravity and cause erosion.

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•Glacial drift is the general term for all materials carried and deposited by a glacier.

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•An alpine glacier is a glacier that forms in a mountainous area.

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•Continental glaciers are thick sheets of ice that may spread over large areas, including across entire continents.

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Gravity can  shape Earth by moving material downslope in several ways.

1. Slow Mass Movement

a. Creep

2. Rapid Mass Movement

a.Rockfall

b.Landslide

c.Mudflow

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extremely slow movement of material downslope.

Rockfall: when loose rocks fall down a steep slope

A landslide is the sudden and rapid movement of a large amount of material downslope.

​Mudflow is a rapid movement of a large mass of mud

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