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WorksheetsChapter 15: Eolian Processes and Arid Landscapes Quiz
Total questions: 20
Worksheet time: 15mins
Arid and semiarid climates cover about ________ of Earth's surface.
three-fourths
two-thirds
one-half
one-third
The term "eolian" refers to
stream-related processes.
glacial processes in areas outside the polar regions.
erosion, transportation, and deposition by the wind.
weathering and mass movement in humid regions.
For purposes of discussing eolian processes, the wind acts like a
solid.
gas.
plasma.
fluid.
The ability of the wind to move materials
exceeds that of other transporting agents, such as water and ice.
is small compared to other transporting agents, such as water and ice.
is greater than that of water because of the higher density of air compared to water.
is equal to other transporting agents, such as water and ice.
The transport of small sand particles (0.07 to 0.20 mm) along the ground in a bouncing and skipping action is known as
deflation.
abrasion.
saltation.
surface creep.
Saltation accounts for about ________% of sediment transport by wind.
15
35
65
80
The sliding and rolling along the ground of particles larger than 0.5 mm is known as
deflation.
abrasion.
saltation.
surface creep.
The removal and lifting of individual loose particles by the wind is termed
deflation.
abrasion.
saltation.
deposition.
The grinding and shaping of rock surfaces by the "sand blasting" action of particles captured in the air is termed
deflation.
abrasion.
saltation.
deposition.
The term used to describe rocks that are pitted, fluted, or polished from eolian erosion is
desert pavement.
pumice.
ventifacts.
dunes.
Desert pavement refers to
specially constructed roadbeds in dry and hot regions.
surfaces of concentrated pebbles and gravels.
deposits of silt and clay.
sand-covered surfaces.
An extensive area of sand and sand dunes is known as a(n)
reg desert.
erg desert, or sand sea.
lag desert.
desert pavement.
Relative to dune movement and form, a dune's slipface forms on which side?
leeward side
windward side
direction opposite of dune movement
It is not associated with a particular side.
Active dunes cover approximately ________% of Earth's deserts.
27
63
10
80
Which of the following is not a general shape upon which scientists classify dunes?
rectilinear
crescentic
linear
star
Factors that influence dry climates include all the following except
dry, subsiding air associated with subtropical high pressure systems.
location in the rain shadow of mountains
location in continental interiors.
seasonal influence of the ITCZ.
The general term for the land degradation in arid and semiarid regions characterized by expansions of deserts is
desertification.
woody plant encroachment.
deflation.
saltation.
Which of the following is not considered a cause of desertification?
poor agricultural practices
climate change
poor soil-moisture management
afforestation
________ dunes are the largest in size and have multiple slipfaces produced by winds from varying directions.
Linear
Barchan
Transverse
Star
________ dunes form parallel to the prevailing wind, often extending for hundreds of kilometers in length.
Linear
Barchan
Longitudinal
Star
