Question 1

List and describe three ways in which the damming of the Colorado River at Glen Canyon has resulted in water loss from the river.

Accepted Answer

1. Evaporation from the reservoir: The d

Question 2

Surface creep is responsible for ________ of the material in motion by wind.

Accepted Answer

A) 0)2 percent 
B) two percent 
C) ten percent 
D) twenty percent 
E) forty percent 
A) 0)2 percent 
B) two percent 
C) ten percent 
D) twenty percent 
E) forty percent

Question 3

Which of the following can result from ORV (off road vehicle)use in a desert environment?

Accepted Answer

A) it can cause destruction of vegetation through both direct and indirect effects. 
B) it can lead to an increase in small animal populations. 
C) it can initiate ablation. 
D) it can initiate dune development. 
E) ORVs have never been shown to cause measurable impacts on desert environments 
A) it can cause destruction of vegetation through both direct and indirect effects. 
B) it can lead to an increase in small animal populations. 
C) it can initiate ablation. 
D) it can initiate dune development. 
E) ORVs have never been shown to cause measurable impacts on desert environments

Question 4

Which is a problem with deserts and eolian features?

Accepted Answer

A) sand dune migration over human features at Nag's Head,N.C. 
B) contraction of the Sahara desert northward 
C) sand deflation from roads and towns in Kuwait due to the Gulf War 
D) ORVs creating paths for animal migrations 
E) flash floods depositing coarse material on desert pavements. 
A) sand dune migration over human features at Nag's Head,N.C. 
B) contraction of the Sahara desert northward 
C) sand deflation from roads and towns in Kuwait due to the Gulf War 
D) ORVs creating paths for animal migrations 
E) flash floods depositing coarse material on desert pavements.

Question 5

A wadi would make a ________ camp site because ________.

Accepted Answer

A) good it is filled with soft sediments 
B) good cool air will drain into it at night 
C) poor all sorts of threatening creatures live there 
D) poor flash floods can occur without warning 
E) good water drains away easily 
A) good it is filled with soft sediments 
B) good cool air will drain into it at night 
C) poor all sorts of threatening creatures live there 
D) poor flash floods can occur without warning 
E) good water drains away easily

Question 6

Small sized sand that is blown in a strong wind will produce ripples that are

Accepted Answer

A) closely spaced. 
B) widely spaced. 
C) It is impossible to say what the spacing will be because there is no relationship between ripple spacing,sand size,and wind velocity. 
A) closely spaced. 
B) widely spaced. 
C) It is impossible to say what the spacing will be because there is no relationship between ripple spacing,sand size,and wind velocity.

Question 7

Longitudinal sand dunes are oriented parallel to the prevailing wind.

Accepted Answer

A) True 
 B)False

Question 8

The term  eolian  refers to

Accepted Answer

A) stream-related processes. 
B) glacial processes in areas outside the polar regions. 
C) erosion,transportation,and deposition by the wind. 
D) weathering and mass movement in humid regions. 
E) the breakdown of rock material in place. 
A) stream-related processes. 
B) glacial processes in areas outside the polar regions. 
C) erosion,transportation,and deposition by the wind. 
D) weathering and mass movement in humid regions. 
E) the breakdown of rock material in place.

Question 9

Desert pavement refers to

Accepted Answer

A) specially constructed roadbeds in dry and hot regions. 
B) surfaces of concentrated pebbles and gravels. 
C) surfaces that evidently were not affected by the 1991 Persian Gulf War. 
D) sand-covered surfaces. 
E) roads in the Sahara desert. 
A) specially constructed roadbeds in dry and hot regions. 
B) surfaces of concentrated pebbles and gravels. 
C) surfaces that evidently were not affected by the 1991 Persian Gulf War. 
D) sand-covered surfaces. 
E) roads in the Sahara desert.

Question 10

As regards the sides of a dune,which of the following is correctly matched?

Accepted Answer

A) windward - avalanche slope 
B) windward - angle of repose 
C) leeward - avalanche slope 
D) stoss -angle of repose 
E) brink - angle of repose 
A) windward - avalanche slope 
B) windward - angle of repose 
C) leeward - avalanche slope 
D) stoss -angle of repose 
E) brink - angle of repose

Question 11

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

Accepted Answer

The four basic dune classes are barchan,

Question 12

Write an essay on dunes in which you first discuss the processes that move and form dunes,and then move on to a discussion of the characteristics and formative processes of crescentic,linear,and star dunes.

Accepted Answer

Dunes are fascinating landforms that are

Question 13

Climate models indicate that there will be no increase to soil erosion in Canada.

Accepted Answer

A) True 
 B)False

Question 14

Much of desertification is due to human actions.

Accepted Answer

A) True 
 B)False

Question 15

Discuss the factors that lead to the formation of a star dune.

Accepted Answer

Star dunes are formed by a combination o

Question 16

Desert landscapes tend to be ________ in appearance because of the ________.

Accepted Answer

A) rugged and hard-edged lack of chemical weathering 
B) rugged and hard edged type of resistant rock found in deserts 
C) rounded and smooth abrasion 
D) rounded and smooth type of nonresistant rock found in deserts 
A) rugged and hard-edged lack of chemical weathering 
B) rugged and hard edged type of resistant rock found in deserts 
C) rounded and smooth abrasion 
D) rounded and smooth type of nonresistant rock found in deserts

Question 17

The Colorado River system is experiencing a drought that is more severe than any in the historic record.

Accepted Answer

A) True 
 B)False

Question 18

Write an essay on the Colorado River that addresses how humans have altered its flow and what the various ecological,economic,and political results of this alteration have been.

Accepted Answer

The Colorado River is one of the most im

Question 19

Write an essay on climate change and aridity in Canada.

Accepted Answer

Climate change and aridity are two inter

Question 20

Abrasion is usually confined to a zone which extends up to ________ above the ground.

Accepted Answer

A) 1 cm 
B) 1 m 
C) 5 m 
D) 10 m 
E) 50 m 
A) 1 cm 
B) 1 m 
C) 5 m 
D) 10 m 
E) 50 m

Exam 15: Eolian Processes and Arid Landscapes

List and describe three ways in which the damming of the Colorado River at Glen Canyon has resulted in water loss from the river.

Surface creep is responsible for ________ of the material in motion by wind.

Which of the following can result from ORV (off road vehicle)use in a desert environment?

Which is a problem with deserts and eolian features?

A wadi would make a ________ camp site because ________.

Small sized sand that is blown in a strong wind will produce ripples that are

Longitudinal sand dunes are oriented parallel to the prevailing wind.

The term eolian refers to

Desert pavement refers to

As regards the sides of a dune,which of the following is correctly matched?

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

Write an essay on dunes in which you first discuss the processes that move and form dunes,and then move on to a discussion of the characteristics and formative processes of crescentic,linear,and star dunes.

Climate models indicate that there will be no increase to soil erosion in Canada.

Much of desertification is due to human actions.

Discuss the factors that lead to the formation of a star dune.

Desert landscapes tend to be ________ in appearance because of the ________.

The Colorado River system is experiencing a drought that is more severe than any in the historic record.

Write an essay on the Colorado River that addresses how humans have altered its flow and what the various ecological,economic,and political results of this alteration have been.

Write an essay on climate change and aridity in Canada.

Abrasion is usually confined to a zone which extends up to ________ above the ground.

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

Earth and the Human Denominator

Filters

A wadi would make a camp site because .

Desert landscapes tend to be in appearance because of the .