Question 1

Most dunes move only ____ per year.

Accepted Answer

A)  10 to 15 meters
B)  30 to 100 meters
C)  1 to 2 kilometer
D)  5 to 10 kilometers
E)  10 to 100 kilometersF) D) and E)
G) C) and E)

Question 2

Thin rocky soil and slow rates of creep make desert topography steep and angular.

Accepted Answer

A) True 
 B)False

Question 3

A mesa is capped by sedimentary rocks while a butte is capped by a lava flow.

Accepted Answer

A) True 
 B)False  False

Question 4

Rapid down cutting of desert stream channels produces narrow canyons with vertical walls and flat gravel-strewn floors.

Accepted Answer

A) True 
 B)False

Question 5

An area with desert conditions in the United States is ____.

Accepted Answer

A)  the Sahara
B)  the southern Appalachians
C)  the Colorado Plateau
D)  the Pacific Northwest coast
E)  MinnesotaF) D) and E)
G) A) and C)

Question 6

Because of their low rainfall,intermittent stream flow,and dry stream beds,desert lack ____.

Accepted Answer

A)  through-flowing streams
B)  vegetation
C)  mammals
D)  runoff
E)  transverse dunesF) A) and B)
G) C) and E)

Question 7

Loess deposits in the U.S.Midwest are derived from ____.

Accepted Answer

A)  the Ohio River valley
B)  the Rocky Mountains
C)  top soil loosened by agriculture
D)  the Sahara Desert
E)  glacial outwash of the Pleistocene ageF) A) and C)
G) A) and D)

Question 8

A large dune type is the _______ (or seif) dune,which forms a ridge parallel to prevailing wind direction.

Accepted Answer

A)  barchan
B)  transverse
C)  parabolic
D)  longitudinal
E)  moonF) A) and D)
G) A) and C)

Question 9

How do deserts form in coastal tropical regions?

Accepted Answer

A)  rain shadow
B)  cold ocean currents
C)  continental interiors
D)  ascending air
E)  droughtF) A) and B)
G) B) and D)

Question 10

Desert stream channels called ____ are characterized by narrow canyons with vertical walls and flat,gravel-strewn floors.

Accepted Answer

A)  dry streams
B)  intermittent channels
C)  desert streams
D)  stream beds
E)  arroyosF) A) and E)
G) None of the above

Question 11

Most sand dunes are asymmetric in cross section with a gentle slope facing the wind and a steeper slope on the downwind side.

Accepted Answer

A) True 
 B)False

Question 12

The world's best-known deserts lie in a belt 10-15 degrees centered at latitude of 30 degree (North and South).

Accepted Answer

A) True 
 B)False

Question 13

A ______ is a narrow hill of resistant rock with a flat top and very steep sides found in some deserts.

Accepted Answer

A)  butte
B)  horn
C)  plateau
D)  pediment
E)  ridgeF) A) and D)
G) B) and E)

Question 14

Which of the following would not be a control on desert development?

Accepted Answer

A)  rain shadow
B)  great distance from an ocean
C)  location near cold ocean currents
D)  areas beneath rising air masses
E)  climatic belts at 30 ∘\circ∘  north and south latitude F) B) and E)
G) D) and E)

Question 15

_______ is a thin surface layer of closely packed pebbles found in deserts.

Accepted Answer

A)  A pediment
B)  Desert pavement
C)  A barchan
D)  Desert varnish
E)  A mesaF) B) and E)
G) C) and D)

Question 16

A transverse dune is a relatively straight,elongated dune oriented parallel to wind direction.

Accepted Answer

A) True 
 B)False

Question 17

The steep downwind face of a sand dune is called the ______.

Accepted Answer

A)  slip face
B)  coarsest grains
C)  longest dimension
D)  gentle slope
E)  upwind surfaceF) C) and D)
G) A) and B)

Question 18

This agent of erosion and deposition is most effective on fine sediment that is dry.

Accepted Answer

A)  flash floods
B)  wind
C)  frost action
D)  desertification
E)  dry washF) A) and E)
G) B) and D)

Question 19

A _____ is a depression on the land surface caused by wind erosion which may have a pillar left at the center.

Accepted Answer

A)  mesa
B)  loess
C)  blowout
D)  plateau
E)  deflation basinF) All of the above
G) C) and D) C

Question 20

This area of the desert southwest is characterized by mostly flat-lying beds of sedimentary rock over 1,500 meters above sea level.

Accepted Answer

A)  Colorado Plateau
B)  Basin and Range
C)  Great Salt Lake
D)  Interior Desert
E)  Butte provinceF) A) and B)
G) C) and E) A

Exam 18: Deserts and Wind Action

Most dunes move only ____ per year.

Correct AnswerverifiedShow Answer

Thin rocky soil and slow rates of creep make desert topography steep and angular.

Correct AnswerverifiedShow Answer

A mesa is capped by sedimentary rocks while a butte is capped by a lava flow.

Correct AnswerverifiedFalse

Rapid down cutting of desert stream channels produces narrow canyons with vertical walls and flat gravel-strewn floors.

Correct AnswerverifiedShow Answer

An area with desert conditions in the United States is ____.

Correct AnswerverifiedShow Answer

Because of their low rainfall,intermittent stream flow,and dry stream beds,desert lack ____.

Correct AnswerverifiedShow Answer

Loess deposits in the U.S.Midwest are derived from ____.

Correct AnswerverifiedShow Answer

A large dune type is the _______ (or seif) dune,which forms a ridge parallel to prevailing wind direction.

Correct AnswerverifiedShow Answer

How do deserts form in coastal tropical regions?

Correct AnswerverifiedShow Answer

Desert stream channels called ____ are characterized by narrow canyons with vertical walls and flat,gravel-strewn floors.

Correct AnswerverifiedShow Answer

Most sand dunes are asymmetric in cross section with a gentle slope facing the wind and a steeper slope on the downwind side.

Correct AnswerverifiedShow Answer

The world's best-known deserts lie in a belt 10-15 degrees centered at latitude of 30 degree (North and South).

Correct AnswerverifiedShow Answer

A ______ is a narrow hill of resistant rock with a flat top and very steep sides found in some deserts.

Correct AnswerverifiedShow Answer

Which of the following would not be a control on desert development?

Correct AnswerverifiedShow Answer

_______ is a thin surface layer of closely packed pebbles found in deserts.

Correct AnswerverifiedShow Answer

A transverse dune is a relatively straight,elongated dune oriented parallel to wind direction.

Correct AnswerverifiedShow Answer

The steep downwind face of a sand dune is called the ______.

Correct AnswerverifiedShow Answer

This agent of erosion and deposition is most effective on fine sediment that is dry.

Correct AnswerverifiedShow Answer

A _____ is a depression on the land surface caused by wind erosion which may have a pillar left at the center.

Correct AnswerverifiedC

This area of the desert southwest is characterized by mostly flat-lying beds of sedimentary rock over 1,500 meters above sea level.

Correct AnswerverifiedA

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False

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C

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A