Question 1

A__________ is a crescent- shaped dune whose tips point downwind.

Accepted Answer

A)  parabolic 
B)  barchan 
C)  star 
D)  transverse 
A)  parabolic 
B)  barchan 
C)  star 
D)  transverse B

Question 2

Loess deposits in the central United States and Columbia Plateau_____ .

Accepted Answer

A)  accumulated from flooding of the Mississippi River 
B)  originated as silt sized particles in Pleistocene glacial outwash streams and freshly exposed till 
C)  blew in from the dry areas in the Great Plains and southwestern desert areas 
D)  were originally deposited as barchanoid dunes and later redeposited by glaciers 
A)  accumulated from flooding of the Mississippi River 
B)  originated as silt sized particles in Pleistocene glacial outwash streams and freshly exposed till 
C)  blew in from the dry areas in the Great Plains and southwestern desert areas 
D)  were originally deposited as barchanoid dunes and later redeposited by glaciers B

Question 3

Which one of the following statements about sand dunes is correct?

Accepted Answer

A)  The more gently sloping surface is the leeward slope of the dune. 
B)  In a sand dune, the more gently inclined strata lie parallel to the slip face. 
C)  Sand is blown up the slip face and rolls down the more gently sloping flank of the dune. 
D)  A dune migrates in the direction of inclination of the slip face. 
A)  The more gently sloping surface is the leeward slope of the dune. 
B)  In a sand dune, the more gently inclined strata lie parallel to the slip face. 
C)  Sand is blown up the slip face and rolls down the more gently sloping flank of the dune. 
D)  A dune migrates in the direction of inclination of the slip face. D

Question 4

__________have rainfall amounts and soil moisture contents between those of true deserts and humid lands.

Accepted Answer

A)  Sabkhas 
B)  Steppes 
C)  Shelves 
D)  Tundras 
A)  Sabkhas 
B)  Steppes 
C)  Shelves 
D)  Tundras

Question 5

Which one of the following statements concerning rock weathering is true?

Accepted Answer

A)  Warm temperatures and low soil moisture contents both promote rapid rates of mechanical weathering. 
B)  Low temperatures and low soil moisture contents promote oxidation. 
C)  Low temperatures and high soil moisture contents accelerate chemical weathering but inhibit mechanical weathering. 
D)  Warm temperatures and high soil moisture contents accelerate chemical weathering. 
A)  Warm temperatures and low soil moisture contents both promote rapid rates of mechanical weathering. 
B)  Low temperatures and low soil moisture contents promote oxidation. 
C)  Low temperatures and high soil moisture contents accelerate chemical weathering but inhibit mechanical weathering. 
D)  Warm temperatures and high soil moisture contents accelerate chemical weathering.

Question 6

________are complexly shaped dunes in the Sahara or Arabian deserts, formed in response to different, seasonal, wind directions.

Accepted Answer

A)  Star 
B)  Parabolic 
C)  Barchan 
D)  Transverse 
A)  Star 
B)  Parabolic 
C)  Barchan 
D)  Transverse

Question 7

_________dunes are linear sand ridges at right angles to the prevailing wind direction in coastal areas, with a steady supply of sand.

Accepted Answer

A)  Longitudinal 
B)  Parabolic 
C)  Barchan 
D)  Transverse 
A)  Longitudinal 
B)  Parabolic 
C)  Barchan 
D)  Transverse

Question 8

Assume that the slip face of a transverse dune slopes downhill toward the south. What is the direction of the prevailing wind?

Accepted Answer

A)  east to west 
B)  south to north 
C)  north to south 
D)  west to east 
A)  east to west 
B)  south to north 
C)  north to south 
D)  west to east

Question 9

During a typical sandstorm, saltating sand grains reach a maximum height of about__________ above the land surface.

Accepted Answer

A)  1 metre 
B)  1 centimetre 
C)  10 centimetres 
D)  10 metres 
A)  1 metre 
B)  1 centimetre 
C)  10 centimetres 
D)  10 metres

Question 10

Which one of the following will effectively limit further deflation in a desert area?

Accepted Answer

A)  desert pavement 
B)  the water table 
C)  the repose level 
D)  sea level 
A)  desert pavement 
B)  the water table 
C)  the repose level 
D)  sea level

Question 11

Which inland body of water in central Asia has shrunk by over 90% due to diversion of streams for irrigation?

Accepted Answer

A)  Aral Sea 
B)  Black Sea 
C)  Red Sea 
D)  Baltic Sea 
A)  Aral Sea 
B)  Black Sea 
C)  Red Sea 
D)  Baltic Sea

Question 12

Which type of dune can be up to 90 metres tall and forms under variable wind directions?

Accepted Answer

A)  transverse 
B)  barchan 
C)  star 
D)  parabolic 
A)  transverse 
B)  barchan 
C)  star 
D)  parabolic

Question 13

Assume that the central slip face of a parabolic dune slopes downhill toward the west. What is the direction of the prevailing wind?

Accepted Answer

A)  east to west 
B)  west to east 
C)  north to south 
D)  south to north 
A)  east to west 
B)  west to east 
C)  north to south 
D)  south to north

Question 14

Desert and steppe lands cover about what percentage of Earth's land area?

Accepted Answer

A)  30% 
B)  10% 
C)  66% 
D)  3% 
A)  30% 
B)  10% 
C)  66% 
D)  3%

Question 15

Which one of the following statements is true?

Accepted Answer

A)  Rainshadow deserts occur where air masses descend after first having risen to cross a mountain range. 
B)  Despite infrequent rainfalls, erosional and depositional features of running water are important in desert landscapes. 
C)  Desert landscapes are monotonous, relatively flat areas covered to various depths with sand. 
D)  Deserts and dry lands are concentrated in areas of ascending air masses and relatively low atmospheric pressures. 
A)  Rainshadow deserts occur where air masses descend after first having risen to cross a mountain range. 
B)  Despite infrequent rainfalls, erosional and depositional features of running water are important in desert landscapes. 
C)  Desert landscapes are monotonous, relatively flat areas covered to various depths with sand. 
D)  Deserts and dry lands are concentrated in areas of ascending air masses and relatively low atmospheric pressures.

Question 16

What is the angle of repose for dry sand?

Accepted Answer

A)  67° 
B)  10° 
C)  6° 
D)  34° 
A)  67° 
B)  10° 
C)  6° 
D)  34°

Question 17

Which one of the following would probably not affect the size and depth of a blowout?

Accepted Answer

A)  type and density of vegetation 
B)  a near surface water table 
C)  a rise in sea level 
D)  areas of desert pavement 
A)  type and density of vegetation 
B)  a near surface water table 
C)  a rise in sea level 
D)  areas of desert pavement

Question 18

__________dunes have scalloped sand ridges at right angles to prevailing winds with crescent- shaped slip faces pointing downwind.

Accepted Answer

A)  Barchanoid 
B)  Transverse 
C)  Parabolic 
D)  Star 
A)  Barchanoid 
B)  Transverse 
C)  Parabolic 
D)  Star

Question 19

Which exerts the greatest amount of erosion and sculpting of landforms in deserts?

Accepted Answer

A)  rainfall and running water 
B)  suspended silt load in perpetual dust storms of traversing winds 
C)  saltating bed load sand in great sandstorms of traversing winds 
D)  fast moving, descending, dense, cold dry air from the upper atmosphere 
A)  rainfall and running water 
B)  suspended silt load in perpetual dust storms of traversing winds 
C)  saltating bed load sand in great sandstorms of traversing winds 
D)  fast moving, descending, dense, cold dry air from the upper atmosphere

Question 20

All of the following are formed by abrasion except for a___________ .

Accepted Answer

A)  yardang 
B)  dune 
C)  ventifact 
D)  glacial striation 
A)  yardang 
B)  dune 
C)  ventifact 
D)  glacial striation

A__________ is a crescent- shaped dune whose tips point downwind.

Loess deposits in the central United States and Columbia Plateau_____ .

Which one of the following statements about sand dunes is correct?

__________have rainfall amounts and soil moisture contents between those of true deserts and humid lands.

Which one of the following statements concerning rock weathering is true?

________are complexly shaped dunes in the Sahara or Arabian deserts, formed in response to different, seasonal, wind directions.

_________dunes are linear sand ridges at right angles to the prevailing wind direction in coastal areas, with a steady supply of sand.

Assume that the slip face of a transverse dune slopes downhill toward the south. What is the direction of the prevailing wind?

During a typical sandstorm, saltating sand grains reach a maximum height of about__________ above the land surface.

Which one of the following will effectively limit further deflation in a desert area?

Which inland body of water in central Asia has shrunk by over 90% due to diversion of streams for irrigation?

Which type of dune can be up to 90 metres tall and forms under variable wind directions?

Assume that the central slip face of a parabolic dune slopes downhill toward the west. What is the direction of the prevailing wind?

Desert and steppe lands cover about what percentage of Earth's land area?

Which one of the following statements is true?

What is the angle of repose for dry sand?

Which one of the following would probably not affect the size and depth of a blowout?

__________dunes have scalloped sand ridges at right angles to prevailing winds with crescent- shaped slip faces pointing downwind.

Which exerts the greatest amount of erosion and sculpting of landforms in deserts?

All of the following are formed by abrasion except for a___________ .

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters

Exam 10: Earthquakes and Earths Interior

A__________ is a crescent- shaped dune whose tips point downwind.

Loess deposits in the central United States and Columbia Plateau_____ .

Which one of the following statements about sand dunes is correct?

__________have rainfall amounts and soil moisture contents between those of true deserts and humid lands.

Which one of the following statements concerning rock weathering is true?

________are complexly shaped dunes in the Sahara or Arabian deserts, formed in response to different, seasonal, wind directions.

_________dunes are linear sand ridges at right angles to the prevailing wind direction in coastal areas, with a steady supply of sand.

Assume that the slip face of a transverse dune slopes downhill toward the south. What is the direction of the prevailing wind?

During a typical sandstorm, saltating sand grains reach a maximum height of about__________ above the land surface.

Which one of the following will effectively limit further deflation in a desert area?

Which inland body of water in central Asia has shrunk by over 90% due to diversion of streams for irrigation?

Which type of dune can be up to 90 metres tall and forms under variable wind directions?

Assume that the central slip face of a parabolic dune slopes downhill toward the west. What is the direction of the prevailing wind?

Desert and steppe lands cover about what percentage of Earth's land area?

Which one of the following statements is true?

What is the angle of repose for dry sand?

Which one of the following would probably not affect the size and depth of a blowout?

__________dunes have scalloped sand ridges at right angles to prevailing winds with crescent- shaped slip faces pointing downwind.

Which exerts the greatest amount of erosion and sculpting of landforms in deserts?

All of the following are formed by abrasion except for a___________ .

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters