Question 1

Eolian processes are powered by

Accepted Answer

A) glaciers. 
B) ocean currents. 
C) streams. 
D) wind. 
A) glaciers. 
B) ocean currents. 
C) streams. 
D) wind.

Question 2

The closet terrestrial analog for the surface of Mars is that of

Accepted Answer

A) the Gobi Desert. 
B) the Sahara Desert. 
C) Death Valley. 
D) Antarctica. 
A) the Gobi Desert. 
B) the Sahara Desert. 
C) Death Valley. 
D) Antarctica.

Question 3

Sand dunes behind beaches are typically

Accepted Answer

A) barchan dunes. 
B) blowout dunes. 
C) linear dunes. 
D) transverse dunes. 
A) barchan dunes. 
B) blowout dunes. 
C) linear dunes. 
D) transverse dunes.

Question 4

A wind of 48 km/hr can move up to _________ of sand per day.

Accepted Answer

A) 10 tons 
B) 5 tons 
C) 0.5 tons 
D) 1 ton 
A) 10 tons 
B) 5 tons 
C) 0.5 tons 
D) 1 ton

Question 5

Loess is a highly beneficial type of sediment for soils except for one major flaw.What is it?

Accepted Answer

A) Loess soils lacks nutrients. 
B) Loess tends to develop hardpan soils. 
C) Loess soils are easily eroded. 
D) Loess soils are too "sandy." 
A) Loess soils lacks nutrients. 
B) Loess tends to develop hardpan soils. 
C) Loess soils are easily eroded. 
D) Loess soils are too "sandy."

Question 6

Small desert valleys are called wadis in the Middle East and __________ in the western United States.

Accepted Answer

A) dry washes 
B) ergs 
C) loess 
D) pediments 
A) dry washes 
B) ergs 
C) loess 
D) pediments

Question 7

Which of the following statements about sand dunes is false?

Accepted Answer

A) Grains migrate up the dune slope by saltation. 
B) Dunes migrate downwind. 
C) Cross-bedding is preserved during dune movement. 
D) All sand dunes are made of quartz grains. 
A) Grains migrate up the dune slope by saltation. 
B) Dunes migrate downwind. 
C) Cross-bedding is preserved during dune movement. 
D) All sand dunes are made of quartz grains.

Question 8

In the temperate zones of Earth between 30$\degree$ and 60$\degree$latitude,the prevailing winds come from the

Accepted Answer

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

Question 9

Why does volcanic dust tend to travel farther than wind-blown dust derived from the continents?

Accepted Answer

A) because volcanic dust is erupted high into the atmosphere 
B) because volcanic dust is less dense than dust derived from the continents 
C) because volcanic dust is composed of quartz,whereas dust derived from the continents is composed of feldspar 
D) all of the above 
A) because volcanic dust is erupted high into the atmosphere 
B) because volcanic dust is less dense than dust derived from the continents 
C) because volcanic dust is composed of quartz,whereas dust derived from the continents is composed of feldspar 
D) all of the above

Question 10

The height of a dune remains constant when

Accepted Answer

A) the wind speed is constant. 
B) there is more accumulation on the slip face than the windblown side. 
C) sand grains blow off the top of the dune as quickly as they are brought up the windward slope. 
D) the windward slope reaches the angle of repose. 
A) the wind speed is constant. 
B) there is more accumulation on the slip face than the windblown side. 
C) sand grains blow off the top of the dune as quickly as they are brought up the windward slope. 
D) the windward slope reaches the angle of repose.

Question 11

Which of the following grain sizes would a stream easily move that wind could not?

Accepted Answer

A) clay 
B) silt 
C) sand 
D) cobble 
A) clay 
B) silt 
C) sand 
D) cobble

Question 12

Why are streams able to move larger particles than wind?

Accepted Answer

A) Air has a lower density and viscosity than water. 
B) Air does not obey the same laws of motion as water. 
C) Air moves at lower velocities than water. 
D) Air impedes the bounding movements of saltation. 
A) Air has a lower density and viscosity than water. 
B) Air does not obey the same laws of motion as water. 
C) Air moves at lower velocities than water. 
D) Air impedes the bounding movements of saltation.

Question 13

What causes most of the erosion in deserts?

Accepted Answer

A) groundwater 
B) streams 
C) thermal cycling 
D) wind 
A) groundwater 
B) streams 
C) thermal cycling 
D) wind

Question 14

How much of Earth's land surface is covered by loess?

Accepted Answer

A) 5% 
B) 10% 
C) 30% 
D) 50% 
A) 5% 
B) 10% 
C) 30% 
D) 50%

Question 15

Most of the superficial deposits found on Mars were formed by _______ processes.

Accepted Answer

A) glacial 
B) marine 
C) eolian 
D) volcanic 
A) glacial 
B) marine 
C) eolian 
D) volcanic

Question 16

For how long did fine-grained dust particles from the eruption of Mount Pinatubo remain in the atmosphere?

Accepted Answer

A) several days 
B) several weeks 
C) several months 
D) several years 
A) several days 
B) several weeks 
C) several months 
D) several years

Question 17

What grain feature of quartz is only found in the eolian environment?

Accepted Answer

A) roundness 
B) tinting 
C) high luster 
D) matting 
A) roundness 
B) tinting 
C) high luster 
D) matting

Question 18

How high are the tallest sand dunes on Earth?

Accepted Answer

A) 10 meters 
B) 25 meters 
C) 100 meters 
D) 250 meters 
A) 10 meters 
B) 25 meters 
C) 100 meters 
D) 250 meters

Question 19

Cima dome in the Mojave Desert is a __________ feature.

Accepted Answer

A) barachan dune 
B) pediment 
C) dry wash 
D) playa lake 
A) barachan dune 
B) pediment 
C) dry wash 
D) playa lake

Question 20

What are ventifacts?

Accepted Answer

A) sand dunes 
B) desert pavement 
C) sand drifts 
D) wind-faceted pebbles 
A) sand dunes 
B) desert pavement 
C) sand drifts 
D) wind-faceted pebbles

Exam 19: Winds and Deserts

Eolian processes are powered by

The closet terrestrial analog for the surface of Mars is that of

Sand dunes behind beaches are typically

A wind of 48 km/hr can move up to _________ of sand per day.

Loess is a highly beneficial type of sediment for soils except for one major flaw.What is it?

Small desert valleys are called wadis in the Middle East and __________ in the western United States.

Which of the following statements about sand dunes is false?

In the temperate zones of Earth between 30 °\degree° and 60 °\degree° latitude,the prevailing winds come from the

Why does volcanic dust tend to travel farther than wind-blown dust derived from the continents?

The height of a dune remains constant when

Which of the following grain sizes would a stream easily move that wind could not?

Why are streams able to move larger particles than wind?

What causes most of the erosion in deserts?

How much of Earth's land surface is covered by loess?

Most of the superficial deposits found on Mars were formed by _______ processes.

For how long did fine-grained dust particles from the eruption of Mount Pinatubo remain in the atmosphere?

What grain feature of quartz is only found in the eolian environment?

How high are the tallest sand dunes on Earth?

Cima dome in the Mojave Desert is a __________ feature.

What are ventifacts?

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Clocks in Rocks: Timing the Geologic Period

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

Filters

In the temperate zones of Earth between 30 $\degree$ and 60 $\degree$ latitude,the prevailing winds come from the