Question 1

Which of the following terms is a correct reference to a desert pavement?

Accepted Answer

A) prairie 
B) gravel mounds 
C) sand seas 
D) reg desert 
E) tundra 
A) prairie 
B) gravel mounds 
C) sand seas 
D) reg desert 
E) tundra

Question 2

Describe the formation,distribution,and typical characteristics of loess deposits.

Accepted Answer

Loess deposits are formed from the accum

Question 3

Alluvial fans often serve as groundwater sources.

Accepted Answer

A) True 
 B)False

Question 4

Draw a diagram showing the eight basic dune types.Include a brief description of the conditions that create each.

Accepted Answer

The eight basic dune types are:

1. Bar

Question 5

Water is essential to the formation of a desert pavement.

Accepted Answer

A) True 
 B)False

Question 6

Once particle motion is initiated,subsequent motion can be maintained ________ because of the process of ________.

Accepted Answer

A) at lower wind velocities particle impact 
B) at lower wind velocities deflation 
C) only with higher wind velocities particle impact 
D) only with higher wind velocities deflation 
E) only with higher wind velocities movement suppression 
A) at lower wind velocities particle impact 
B) at lower wind velocities deflation 
C) only with higher wind velocities particle impact 
D) only with higher wind velocities deflation 
E) only with higher wind velocities movement suppression

Question 7

Removal of vegetation from a semiarid grassland environment is likely to lead to

Accepted Answer

A) deflation. 
B) abrasion. 
C) soil development. 
D) deposition. 
E) mass movement. 
A) deflation. 
B) abrasion. 
C) soil development. 
D) deposition. 
E) mass movement.

Question 8

Which of the following surface conditions would limit the effectiveness of wind as an erosional agent?

Accepted Answer

A) surface materials that are noncohesive. 
B) surface materials consisting of clay-sized particles. 
C) surface materials that are dry. 
D) surfaces covered with little or no vegetation. 
E) slightly rough surfaces. 
A) surface materials that are noncohesive. 
B) surface materials consisting of clay-sized particles. 
C) surface materials that are dry. 
D) surfaces covered with little or no vegetation. 
E) slightly rough surfaces.

Question 9

Cross-stratification refers to

Accepted Answer

A) the orientation of ripples. 
B) overlapping alluvial fans. 
C) depositional features on pediments. 
D) lithified slipfaces. 
E) dune surfaces. 
A) the orientation of ripples. 
B) overlapping alluvial fans. 
C) depositional features on pediments. 
D) lithified slipfaces. 
E) dune surfaces.

Question 10

Rocks that appear pitted and grooved,and sometimes polished smooth by eolian processes,are termed

Accepted Answer

A) ventifacts. 
B) yardangs. 
C) desert pavements. 
D) alluvium. 
E) hoodoos 
A) ventifacts. 
B) yardangs. 
C) desert pavements. 
D) alluvium. 
E) hoodoos

Question 11

The steepest side of a dune has a maximum angle of about

Accepted Answer

A) 5°. 
B) 10°. 
C) 34°. 
D) 65°. 
E) 85°. 
A) 5°. 
B) 10°. 
C) 34°. 
D) 65°. 
E) 85°.

Question 12

Active sand dunes and sandy deserts cover approximately what percentage of continental land between 30° N and 30° S latitude?

Accepted Answer

A) 10 percent 
B) 30 percent 
C) 50 percent 
D) 70 percent 
E) 90 percent 
A) 10 percent 
B) 30 percent 
C) 50 percent 
D) 70 percent 
E) 90 percent

Question 13

Alluvial fans are common in humid regions.

Accepted Answer

A) True 
 B)False

Question 14

The Persian Gulf War resulted in the disruption and destruction of thousands of square kilometers of desert pavement.

Accepted Answer

A) True 
 B)False

Question 15

The sandblasting action of wind-blown particles is called

Accepted Answer

A) deflation. 
B) abrasion. 
C) saltation. 
D) grinding. 
E) aggradation 
A) deflation. 
B) abrasion. 
C) saltation. 
D) grinding. 
E) aggradation

Question 16

Pebbles can be moved by ________ in a process known as ________.

Accepted Answer

A) deflation saltation 
B) deflation surface creep 
C) saltating particles deflation 
D) saltating particles surface creep 
E) suspended particles saltation. 
A) deflation saltation 
B) deflation surface creep 
C) saltating particles deflation 
D) saltating particles surface creep 
E) suspended particles saltation.

Question 17

The ability of the wind to move materials

Accepted Answer

A) exceeds that of other transporting agents,such as water and ice. 
B) is small compared to other transporting agents,such as water and ice. 
C) is greater than that of water because of the higher density of air compared to water. 
D) increases with decreased wind speed. 
E) is greater than ice,but less than water. 
A) exceeds that of other transporting agents,such as water and ice. 
B) is small compared to other transporting agents,such as water and ice. 
C) is greater than that of water because of the higher density of air compared to water. 
D) increases with decreased wind speed. 
E) is greater than ice,but less than water.

Question 18

Weathering that occurs by water in the desert is associated primarily with

Accepted Answer

A) groundwater. 
B) field water capacity. 
C) hygroscopic water. 
D) ephemeral streams. 
E) flash floods. 
A) groundwater. 
B) field water capacity. 
C) hygroscopic water. 
D) ephemeral streams. 
E) flash floods.

Question 19

A desert is an area in which

Accepted Answer

A) actual and potential evapotranspiration rates are roughly equal. 
B) actual evapotranspiration rates exceed potential evapotranspiration rates. 
C) potential evapotranspiration rates exceed actual evapotranspiration rates. 
D) hot conditions exist throughout the year. 
E) there is no water supply. 
A) actual and potential evapotranspiration rates are roughly equal. 
B) actual evapotranspiration rates exceed potential evapotranspiration rates. 
C) potential evapotranspiration rates exceed actual evapotranspiration rates. 
D) hot conditions exist throughout the year. 
E) there is no water supply.

Question 20

The Sphinx in Egypt may have originally been a natural ventifactthat was subsequently shaped by people into its present form.

Accepted Answer

A) True 
 B)False

Exam 15: Eolian Processes and Arid Landscapes

Which of the following terms is a correct reference to a desert pavement?

Describe the formation,distribution,and typical characteristics of loess deposits.

Alluvial fans often serve as groundwater sources.

Draw a diagram showing the eight basic dune types.Include a brief description of the conditions that create each.

Water is essential to the formation of a desert pavement.

Once particle motion is initiated,subsequent motion can be maintained ________ because of the process of ________.

Removal of vegetation from a semiarid grassland environment is likely to lead to

Which of the following surface conditions would limit the effectiveness of wind as an erosional agent?

Cross-stratification refers to

Rocks that appear pitted and grooved,and sometimes polished smooth by eolian processes,are termed

The steepest side of a dune has a maximum angle of about

Active sand dunes and sandy deserts cover approximately what percentage of continental land between 30° N and 30° S latitude?

Alluvial fans are common in humid regions.

The Persian Gulf War resulted in the disruption and destruction of thousands of square kilometers of desert pavement.

The sandblasting action of wind-blown particles is called

Pebbles can be moved by ________ in a process known as ________.

The ability of the wind to move materials

Weathering that occurs by water in the desert is associated primarily with

A desert is an area in which

The Sphinx in Egypt may have originally been a natural ventifactthat was subsequently shaped by people into its present form.

Essentials of Geography

Solar Energy to Earth and the Seasons

Earth's Modern Atmosphere

Atmosphere and Surface Energy Balances

Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Climate Systems and Climate Change

The Dynamic Planet

Tectonics, Earthquakes, and Volcanism

Weathering, Karst Landscapes, and Mass Movement

River Systems and Landforms

The Oceans, Coastal Processes, and Landforms

Glacial and Periglacial Processes and Landforms

The Geography of Soils

Ecosystem Essentials

Terrestrial Biomes

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Once particle motion is initiated,subsequent motion can be maintained because of the process of .

Pebbles can be moved by in a process known as .