P1C 11Wind-Formed Landscape Features in Hot Arid Regions

Front

What is the primary theme of the document?

Back

The significant role of wind as a geomorphic agent in shaping landscapes, particularly in hot arid regions.

Front

Define wind erosion.

Back

Wind erosion is the removal of material by the wind.

Front

What are the unique characteristics of wind erosion?

Back

Wind erosion can only move small particles such as dust, sand, and small pebbles, transport sediment up-slope as well as down-slope, and the wind can blow from different directions.

Front

What factors influence wind erosion?

Back

Wind velocity, particle size, surface cover, and arid conditions.

Front

How does wind velocity affect wind erosion?

Back

The stronger the winds, the larger the particles that are moved along.

Front

How does surface cover affect wind erosion?

Back

Boulders and vegetation can reduce the erosional effects of wind by slowing down the wind. Roots can also bind the sand together, reducing erosion.

Front

How do arid conditions affect wind erosion?

Back

Wind erosion is more effective if the soil is dry, as wet sand particles stick together.

Front

What are the different ways wind transports particles?

Back

Suspension, saltation, and surface creep.

Front

Describe suspension in wind transport.

Back

Dust is blown high up in the atmosphere and can travel very long distances.

Front

Describe saltation in wind transport.

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Sand bounces along the surface.