Abrasion:

Erosion of bedrock by continuous friction caused by sand or rock fragments in water, wind, and ice.

Bajada:

When many alluvial fans that have joined together, the resulting landform is called Bajada.

Basin:

Depression in Earth’s surface with no outlet for water.

Compression:

Reduction in the mass or volume of something by applying pressure.

Crest:

The highest point or level; summit.

Deflation:

The lowering of the land surface after the removal of fine-grained particles by the wind.

Eolian:

Formed or deposited by the action of the wind.

Erg:

A vast area deeply covered with sand and topped with dunes.

Erosion:

The gradual peeling and weathering away of Earth surfaces through the action of wind and water.

Gully:

A channel cut into Earth’s surface by running water, especially after a heavy rain.

Leeward:

On or toward the side facing away from the wind.

Saltation:

The jumping movement of sand caused by the wind.

Silt:

Fine earthy particles smaller than sand carried by moving water and deposited as a sediment.

Slip face:

The steep sloped side of a dune that faces away from the wind.

Surface creep:

Rrolling and pushing of sand and slightly larger particles by the wind.

Ventifact:

A stone or bedrock surface that has been shaped or eroded by the wind.

Windward:

On or toward the side facing into the wind.

Qanat:

Underground Water Channels in Arid Zones.

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