Exam 18: Arid Landscapes and Eolian Processes

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The process through which formerly vegetated regions gradually become desert-like is called

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This type of dune forms when winds are weak in one direction and is produced from large amounts of sand deposited perpendicular to the wind.

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One region on Earth that has seen extensive desertification is

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A small remnant of a plateau that has not weathered down to the size of a pinnacle is called a(n)

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Approximately _______ of Earth's land surface is a mix of arid and semi-arid deserts.

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Explain why the backslope,crest,and slip face are important on sand dunes?

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Desertification that occurred in the United States during the 1930s is known as the

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This desert in Africa is associated with the subtropical high-pressure cell.

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This type of depression is created by wind erosion.

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Erosion that occurs when particles grind against each other is called abrasion.

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The major desert in the southwestern United States is the Sonoran Desert.

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Match the sediment transport description with the correct term:
This is responsible for holding fine grains of sediment in the air.
saltation
This is the removal of sediment from a surface by wind erosion.
turbulence
This is the minimum speed that wind needs to pick up a particle of a certain size.
deflation
Correct Answer:
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This is responsible for holding fine grains of sediment in the air.
saltation
This is the removal of sediment from a surface by wind erosion.
turbulence
This is the minimum speed that wind needs to pick up a particle of a certain size.
deflation
This occurs when sediment particles are pushed or rolled along a surface.
creep
The movement of larger sediment particles where the particles are bounced along a surface.
terminal
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Wind erosion occurs as a result of

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A large fragment of a plateau found in dry areas that can be several kilometers wide is called a

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This eolian feature is a steep-sided,narrow tower that is the final remnant of a plateau,mesa,or butte.

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How did the Great Sand Dunes National Monument develop?

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Match the desert with the correct location and characteristics:
This desert in Africa is associated with the subtropical high-pressure cell.
Chihuahuan
This desert in Australia is associated with the subtropical high-pressure cell.
Atacama
This desert in Asia is associated with the influence of being a great distance from a large body of water.
Sahara
Correct Answer:
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Premises:
Responses:
This desert in Africa is associated with the subtropical high-pressure cell.
Chihuahuan
This desert in Australia is associated with the subtropical high-pressure cell.
Atacama
This desert in Asia is associated with the influence of being a great distance from a large body of water.
Sahara
This desert in Mexico is associated with the subtropical high-pressure cell.
Simpson
This desert in South America is a product of the rainshadow effect.
Gobi
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The _____________ is another factor associated with arid locations and occurs on the leeside of mountain ranges where descending air warms adiabatically.

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The geomorphic processes associated with the way wind erodes,transports,and deposits sediment is called

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____________ is a resistant surface created when fine particles blow away and coarse sediment is left behind.

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