Question 1

A __________ is an elongated ridge formed by sand abrasion in the desert.

Accepted Answer

A)  pedestal rock
B)  blowout depression
C)  dune
D)  yardang

Question 2

-"Summer insolation" was highest how many years ago, according to this graph?

Accepted Answer

A)  5,000
B)  10,000
C)  15,000
D)  20,000

Question 3

When did water diversions from Owens Lake begin?

Accepted Answer

A)  1900
B)  1913
C)  1926
D)  1953

Question 4

Sand grains move over the crest and down the _____________ on active sand dunes.

Accepted Answer

A)  bedding planes
B)  windward side
C)  direction of dune migration
D)  slip face

Question 5

Which causes the most widespread aridity geographically?

Accepted Answer

A)  the subtropical high-pressure system
B)  mountain rain shadows
C)  cold and dry continental air
D)  cold ocean currents

Question 6

-In the figure, longitudinal dunes are shown in which box?

Accepted Answer

A)  A
B)  C
C)  D
D)  E

Question 7

Dust in Owens Valley today is about 30% salt.

Accepted Answer

A) True 
 B)False

Question 8

Erosion of sandstone creates what?

Accepted Answer

A)  rock varnish
B)  quartz sand
C)  ventifacts
D)  a pedestal rock

Question 9

Mesa-and-butte terrain forms only in sedimentary rocks.

Accepted Answer

A) True 
 B)False

Question 10

Eolian erosion and deposition sorts particles by their sizes.

Accepted Answer

A) True 
 B)False

Question 11

Antofagasta is dry due to the influence of the subpolar low.

Accepted Answer

A) True 
 B)False

Question 12

Sand dunes are found only in deserts.

Accepted Answer

A) True 
 B)False

Question 13

How long has the Rub' al Khali erg been active?

Accepted Answer

A)  10,000 years
B)  100,000 years
C)  500,000 years
D)  over 1 million years

Question 14

Desertification is both natural and anthropogenic conversion of arid lands to desert.

Accepted Answer

A) True 
 B)False

Question 15

Dust storms in Owens Lake contain chromium, cadmium, and arsenic.

Accepted Answer

A) True 
 B)False

Question 16

-Referring to the figure, which desert is in North America?

Accepted Answer

A)  Great Basin Desert
B)  Great Victoria Desert
C)  Patagonian Desert
D)  the Sahara

Question 17

A __________ is a flat-topped area that is wider than it is tall.

Accepted Answer

A)  mesa
B)  butte
C)  chimney
D)  mesa-and-butte terrain

Question 18

Why are dust storms toxic in the Owens Valley area today?

Accepted Answer

A)  because the dust is naturally toxic
B)  because the area is downwind of other polluted areas
C)  because of agricultural chemicals
D)  because of heavy industrial polluters in the area

Question 19

When the dip of sedimentary rocks is less than 30 degrees, a(n)  __________ forms.

Accepted Answer

A)  mesa
B)  cuesta
C)  hogback
D)  inselberg

Question 20

In recent years Mono Lake's water level has been rising because of improved management of its water resources.

Accepted Answer

A) True 
 B)False

Exam 19: Water, Wind, and Time: Desert Landforms

Sand grains move over the crest and down the _____________ on active sand dunes.

Correct AnswerverifiedShow Answer

Why are dust storms toxic in the Owens Valley area today?

Correct AnswerverifiedShow Answer

-Referring to the figure, which desert is in North America?

Correct AnswerverifiedShow Answer

A __________ is an elongated ridge formed by sand abrasion in the desert.

Correct AnswerverifiedShow Answer

In recent years Mono Lake's water level has been rising because of improved management of its water resources.

Correct AnswerverifiedShow Answer

When the dip of sedimentary rocks is less than 30 degrees, a(n) __________ forms.

Correct AnswerverifiedShow Answer

How long has the Rub' al Khali erg been active?

Correct AnswerverifiedShow Answer

When did water diversions from Owens Lake begin?

Correct AnswerverifiedShow Answer

Desertification is both natural and anthropogenic conversion of arid lands to desert.

Correct AnswerverifiedShow Answer

-In the figure, longitudinal dunes are shown in which box?

Correct AnswerverifiedShow Answer

Antofagasta is dry due to the influence of the subpolar low.

Correct AnswerverifiedShow Answer

Eolian erosion and deposition sorts particles by their sizes.

Correct AnswerverifiedShow Answer

Mesa-and-butte terrain forms only in sedimentary rocks.

Correct AnswerverifiedShow Answer

A __________ is a flat-topped area that is wider than it is tall.

Correct AnswerverifiedShow Answer

Erosion of sandstone creates what?

Correct AnswerverifiedShow Answer

Dust storms in Owens Lake contain chromium, cadmium, and arsenic.

Correct AnswerverifiedShow Answer

-"Summer insolation" was highest how many years ago, according to this graph?

Correct AnswerverifiedShow Answer

Sand dunes are found only in deserts.

Correct AnswerverifiedShow Answer

Dust in Owens Valley today is about 30% salt.

Correct AnswerverifiedShow Answer

Which causes the most widespread aridity geographically?

Correct AnswerverifiedShow Answer

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