Question 1

What is deflation? Why can deflation not continue beneath the water table?

Accepted Answer

Deflation is the process throu

Question 2

The cooling of rising air is due to a decrease in

Accepted Answer

A)  pressure. 
B)  temperature. 
C)  motion. 
D)  volume. 
A)  pressure. 
B)  temperature. 
C)  motion. 
D)  volume.

Question 3

Which type of desert involves an air mass moving inward from the ocean?

Accepted Answer

A)  subtropical desert 
B)  rain-shadow desert 
C)  coastal desert 
D)  polar desert 
A)  subtropical desert 
B)  rain-shadow desert 
C)  coastal desert 
D)  polar desert

Question 4

Dust from Africa is most commonly found in the American

Accepted Answer

A)  northwest. 
B)  southwest. 
C)  northeast. 
D)  southeast. 
A)  northwest. 
B)  southwest. 
C)  northeast. 
D)  southeast.

Question 5

How do sand dunes and ventifacts on Mars compare to sand dunes and ventifacts on Earth?

Accepted Answer

A)  They are much larger. 
B)  They are shaped differently due to the composition of the Martian surface. 
C)  They are considerably smaller. 
D)  They are the same. 
A)  They are much larger. 
B)  They are shaped differently due to the composition of the Martian surface. 
C)  They are considerably smaller. 
D)  They are the same.

Question 6

"Air masses that move over deserts are dry." Evaluate this statement.

Accepted Answer

A)  This statement is true. 
B)  This statement is partially true; however, rain-shadow deserts carry moist coastal air across the desert without dropping the moisture from the air mass. 
C)  This statement is partially true; coastal deserts often have large wet-air masses move over them, but the air mass does not drop moisture. 
D)  This statement is false. 
A)  This statement is true. 
B)  This statement is partially true; however, rain-shadow deserts carry moist coastal air across the desert without dropping the moisture from the air mass. 
C)  This statement is partially true; coastal deserts often have large wet-air masses move over them, but the air mass does not drop moisture. 
D)  This statement is false.

Question 7

Dust that causes hazy days in the Southeastern United States comes from

Accepted Answer

A)  northern South America. 
B)  the southeastern United States. 
C)  southern South America. 
D)  Africa. 
A)  northern South America. 
B)  the southeastern United States. 
C)  southern South America. 
D)  Africa.

Question 8

How is it possible that coastal deserts exist in such a close proximity to ocean moisture?

Accepted Answer

Most coastal deserts are located on the

Question 9

Judge the following sentence according to the criteria given below. Grains are easier to move in water than air because the grains effectively weigh less in water than in air.

Accepted Answer

A)  The assertion and the reason are both correct, and the reason is valid. 
B)  The assertion and the reason are both correct, but the reason is invalid. 
C)  The assertion is correct but the reason is incorrect. 
D)  The assertion is incorrect but the reason is correct. 
E)  Both the assertion and the reason are incorrect. 
A)  The assertion and the reason are both correct, and the reason is valid. 
B)  The assertion and the reason are both correct, but the reason is invalid. 
C)  The assertion is correct but the reason is incorrect. 
D)  The assertion is incorrect but the reason is correct. 
E)  Both the assertion and the reason are incorrect.

Question 10

The highest sand dune in Death Valley is about how many stories high?

Accepted Answer

A)  50 
B)  35 
C)  15 
D)  5 
A)  50 
B)  35 
C)  15 
D)  5

Question 11

What is true about loess and river valleys?

Accepted Answer

A)  Loess deposits tend to be thinner and sandier close to river valleys. 
B)  Loess deposits tend to be thinner and less sandy close to river valleys. 
C)  Loess deposits tend to be thicker and sandier close to river valleys. 
D)  Loess deposits tend to be thicker and less sandy close to river valleys. 
A)  Loess deposits tend to be thinner and sandier close to river valleys. 
B)  Loess deposits tend to be thinner and less sandy close to river valleys. 
C)  Loess deposits tend to be thicker and sandier close to river valleys. 
D)  Loess deposits tend to be thicker and less sandy close to river valleys.

Question 12

Judge the following sentence according to the criteria given below. Motion in the atmosphere is fundamentally different from motion in the mantle because the atmosphere moves by convective motion and the mantle moves by conductive motion.

Accepted Answer

A)  The assertion and the reason are both correct, and the reason is valid. 
B)  The assertion and the reason are both correct, but the reason is invalid. 
C)  The assertion is correct but the reason is incorrect. 
D)  The assertion is incorrect but the reason is correct. 
E)  Both the assertion and the reason are incorrect. 
A)  The assertion and the reason are both correct, and the reason is valid. 
B)  The assertion and the reason are both correct, but the reason is invalid. 
C)  The assertion is correct but the reason is incorrect. 
D)  The assertion is incorrect but the reason is correct. 
E)  Both the assertion and the reason are incorrect.

Question 13

How does loess typically change the shape of a landscape?

Accepted Answer

A)  It piles up and sediments into mesas. 
B)  It blankets the landscape, then is easily eroded into deep canyons. 
C)  It piles up in a way that creates hills and valleys. 
D)  It does not change the shape of the landscape. 
A)  It piles up and sediments into mesas. 
B)  It blankets the landscape, then is easily eroded into deep canyons. 
C)  It piles up in a way that creates hills and valleys. 
D)  It does not change the shape of the landscape.

Question 14

Wind speed is most closely related to

Accepted Answer

A)  humidity. 
B)  temperature. 
C)  landform shapes. 
D)  pressure. 
A)  humidity. 
B)  temperature. 
C)  landform shapes. 
D)  pressure.

Question 15

The dunes that form where wind erosion attacks a barren area in a largely vegetated landscape are called

Accepted Answer

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

Question 16

What is the main difference between rain-shadow deserts and tropical deserts?

Accepted Answer

A)  cause of the lack of precipitation 
B)  the parent rock type 
C)  the amount of precipitation 
D)  the typical vegetation 
A)  cause of the lack of precipitation 
B)  the parent rock type 
C)  the amount of precipitation 
D)  the typical vegetation

Question 17

A playa, with its deposits of gypsum and halite, may form in a

Accepted Answer

A)  yardang. 
B)  ventifact. 
C)  deflation. 
D)  pan. 
A)  yardang. 
B)  ventifact. 
C)  deflation. 
D)  pan.

Question 18

A grain size of 0.1 millimeter typically requires a wind speed of ________ in order to be picked up.

Accepted Answer

A)  1 kilometer per hour 
B)  5 kilometers per hour 
C)  8 kilometers per hour 
D)  15 kilometers per hour 
A)  1 kilometer per hour 
B)  5 kilometers per hour 
C)  8 kilometers per hour 
D)  15 kilometers per hour

Question 19

A pan is

Accepted Answer

A)  an area in the desert where water has caused a depression. 
B)  a flat bench at the top of a sand dune caused by deflation. 
C)  an elliptical or circular depression caused by deflation. 
D)  a scoop shape in a dune caused by a stream of water. 
A)  an area in the desert where water has caused a depression. 
B)  a flat bench at the top of a sand dune caused by deflation. 
C)  an elliptical or circular depression caused by deflation. 
D)  a scoop shape in a dune caused by a stream of water.

Question 20

What is the definition of a desert, and what are some characteristics of a desert?

Accepted Answer

Deserts are regions where annu

Exam 20: Wind: a Global Geologic Process

What is deflation? Why can deflation not continue beneath the water table?

The cooling of rising air is due to a decrease in

Which type of desert involves an air mass moving inward from the ocean?

Dust from Africa is most commonly found in the American

How do sand dunes and ventifacts on Mars compare to sand dunes and ventifacts on Earth?

"Air masses that move over deserts are dry." Evaluate this statement.

Dust that causes hazy days in the Southeastern United States comes from

How is it possible that coastal deserts exist in such a close proximity to ocean moisture?

Judge the following sentence according to the criteria given below. Grains are easier to move in water than air because the grains effectively weigh less in water than in air.

The highest sand dune in Death Valley is about how many stories high?

What is true about loess and river valleys?

Judge the following sentence according to the criteria given below. Motion in the atmosphere is fundamentally different from motion in the mantle because the atmosphere moves by convective motion and the mantle moves by conductive motion.

How does loess typically change the shape of a landscape?

Wind speed is most closely related to

The dunes that form where wind erosion attacks a barren area in a largely vegetated landscape are called

What is the main difference between rain-shadow deserts and tropical deserts?

A playa, with its deposits of gypsum and halite, may form in a

A grain size of 0.1 millimeter typically requires a wind speed of ________ in order to be picked up.

A pan is

What is the definition of a desert, and what are some characteristics of a desert?

Why Study Earth

Minerals: Building Blocks of the Planet

Rocks and Rock-Forming Processes

Formation of Magma and Igneous Rocks

Formation of Sediment and Sedimentary Rocks

Formation of Metamorphic Rocks

Earth Materials As Time Keepers

Earth Materials As Time Keepers

Making Earth

Motion Inside Earth

Deformation of Rocks

Global Tectonics: Plates and Plumes

Tectonics and Surface Relief

Soil Formation and Landscape Stability

Mass Movements: Landscapes in Motion

Streams: Flowing Water Shapes the Landscape

Water Flowing Underground

Glaciers: Cold-Climate Sculptors of Continents

Shorelines: Changing Landscapes Where Land Meets Sea

Global Warming: Real Time Change in the Earth System

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