Question 1

Desert varnish consists of ____________.

Accepted Answer

A) pesticide and other pollutant residues 
B) dusts of iron and magnesium oxides 
C) dust deposits affected by microorganisms 
D) carbonate cements with iron impurities,for example,siderite. 
A) pesticide and other pollutant residues 
B) dusts of iron and magnesium oxides 
C) dust deposits affected by microorganisms 
D) carbonate cements with iron impurities,for example,siderite.

Question 2

Vegetation in the desert consists of ____________.

Accepted Answer

A) cacti only 
B) extensive grasslands with water-seeking deep roots 
C) scattered,scrub-like plants as succulents,such as cacti,with adaptations to obtain and retain as much water as they can 
D) forests of tall,broad-leafed trees 
A) cacti only 
B) extensive grasslands with water-seeking deep roots 
C) scattered,scrub-like plants as succulents,such as cacti,with adaptations to obtain and retain as much water as they can 
D) forests of tall,broad-leafed trees

Question 3

Saltation of sand involves ____________.

Accepted Answer

A) spherical grains rolling along the surface of dunes 
B) grains traveling short distances (approximately 1 m)in the air 
C) grains traveling long distances (approximately 1-100 km)in the air by strong wind 
D) the mixing of mineral sand and salt to form a weakly cemented soil 
A) spherical grains rolling along the surface of dunes 
B) grains traveling short distances (approximately 1 m)in the air 
C) grains traveling long distances (approximately 1-100 km)in the air by strong wind 
D) the mixing of mineral sand and salt to form a weakly cemented soil

Question 4

Evaporite deposits in coastal,subtropical regions derived from the evaporation of seawater stranded above high tide are termed ____________.

Accepted Answer

A) mirages 
B) caliches 
C) sabkhas 
D) yardangs 
A) mirages 
B) caliches 
C) sabkhas 
D) yardangs

Question 5

Which of the following are adaptations of plants that help them survive in deserts?

Accepted Answer

A) a thick waxy outer coating and needle-like leaves 
B) shallow,expansive root systems that can uptake infiltrated water over a broad area 
C) succulence (tissues that retain moisture for a long period of time) 
D) All of the above are correct. 
A) a thick waxy outer coating and needle-like leaves 
B) shallow,expansive root systems that can uptake infiltrated water over a broad area 
C) succulence (tissues that retain moisture for a long period of time) 
D) All of the above are correct.

Question 6

An arroyo is a steep-sided,linear trough produced by ____________.

Accepted Answer

A) normal faulting or other extensional processes 
B) wind erosion of more susceptible layers 
C) scouring erosion by water and sediment during flash floods 
D) cliff retreat 
A) normal faulting or other extensional processes 
B) wind erosion of more susceptible layers 
C) scouring erosion by water and sediment during flash floods 
D) cliff retreat

Question 7

As compared to humid climates,rates of chemical weathering in deserts are ____________.

Accepted Answer

A) much faster 
B) much slower 
C) very similar 
A) much faster 
B) much slower 
C) very similar

Question 8

The Gobi of Mongolia is a desert primarily because it is located ____________.

Accepted Answer

A) in the subtropics 
B) in a polar region 
C) near the center of a large continent 
D) next to a cold ocean current 
A) in the subtropics 
B) in a polar region 
C) near the center of a large continent 
D) next to a cold ocean current

Question 9

The geometry of sand dunes is strongly influenced by the ____________.

Accepted Answer

A) strength of the wind 
B) consistency of wind direction 
C) abundance of sand 
D) All of the above are correct. 
A) strength of the wind 
B) consistency of wind direction 
C) abundance of sand 
D) All of the above are correct.

Question 10

In most deserts,the scarcity of rainfall means that the majority of physical weathering and erosion is accomplished by the wind.

Accepted Answer

A) True 
 B)False

Desert varnish consists of ____________.

Vegetation in the desert consists of ____________.

Saltation of sand involves ____________.

Evaporite deposits in coastal,subtropical regions derived from the evaporation of seawater stranded above high tide are termed ____________.

Which of the following are adaptations of plants that help them survive in deserts?

An arroyo is a steep-sided,linear trough produced by ____________.

As compared to humid climates,rates of chemical weathering in deserts are ____________.

The Gobi of Mongolia is a desert primarily because it is located ____________.

The geometry of sand dunes is strongly influenced by the ____________.

In most deserts,the scarcity of rainfall means that the majority of physical weathering and erosion is accomplished by the wind.

Cosmology and the Birth of Earth

Journey to the Center of the Earth

Drifting Continents and Spreading Seas

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rock

Pages of Earths Past: Sedimentary Rocks

Metamorphism: A Process of Change

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Cracks, crags, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Squeezing Power From a Stone: Energy Resources

Riches in Rock: Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Streams and Floods: The Geology of Running Water

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

An Envelope of Gas: Earths Atmosphere and Climate

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters

Exam 21: Dry Settings: the Geology of Deserts

Desert varnish consists of ____________.

Vegetation in the desert consists of ____________.

Saltation of sand involves ____________.

Evaporite deposits in coastal,subtropical regions derived from the evaporation of seawater stranded above high tide are termed ____________.

Which of the following are adaptations of plants that help them survive in deserts?

An arroyo is a steep-sided,linear trough produced by ____________.

As compared to humid climates,rates of chemical weathering in deserts are ____________.

The Gobi of Mongolia is a desert primarily because it is located ____________.

The geometry of sand dunes is strongly influenced by the ____________.

In most deserts,the scarcity of rainfall means that the majority of physical weathering and erosion is accomplished by the wind.

Cosmology and the Birth of Earth

Journey to the Center of the Earth

Drifting Continents and Spreading Seas

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rock

Pages of Earths Past: Sedimentary Rocks

Metamorphism: A Process of Change

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Cracks, crags, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Squeezing Power From a Stone: Energy Resources

Riches in Rock: Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Streams and Floods: The Geology of Running Water

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

An Envelope of Gas: Earths Atmosphere and Climate

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters