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Online Quiz
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1
In an advancing glacier
A)accumulation equals ablation
B)accumulation exceeds ablation
C)ablation exceeds accumulation
D)basal sliding always occurs
2
In a retreating glacier
A)ice flows toward the edge of the ice
B)ice flows away from the edge of the ice
C)accumulation exceeds ablation
D)accumulation equals ablation
3
Glacial erosion by plucking
A)occurs when blocks of bedrock are frozen into the ice
B)is the dominant process at the ice margin
C)occurs when rock "tools" grind against bedrock while in glacial transport
D)all of the above
4
A sorted glacial deposit
A)moraine
B)outwash
C)till
D)groove
5
A glacial landform composed of till are called
A)eskers
B)kames
C)moraines
D)outwash plains
6
The slip face of a dune usually
A)stands at the angle of repose of sand
B)is steeper than the windward side
C)has sand sliding down it from time to time
D)all of the above
7
The Greenhouse Effect results from
A)depletion of ozone in the atmosphere
B)increased carbon dioxide in the atmosphere
C)increased dust in the atmosphere
D)all of the above
8
Carbon dioxide in the atmosphere
A)reflects incoming solar energy back into space
B)traps outgoing heat radiation from the Earth
C)has decreased since the Industrial Revolution
D)all of the above
9
Sand movement on the leeward side of a dune
A)occurs by bouncing of grains
B)is by suspension
C)occurs by slumping and flowing
D)forms ripples
10
Which of the following is formed by wind erosion?
A)cross-bedded sand
B)sand dunes
C)ripples
D)desert pavement
11
Unsorted glacial sediment
A)erratic
B)outwash
C)till
D)groove
12
Windblown silt
A)outwash
B)loess
C)till
D)dune
13
The latitudinal zone in which the largest portion of Earth’s deserts are located
A)subtropical
B)tropical
C)temperate
D)polar
14
Oxygen isotopes are used as an index of
A)age of strata
B)atmospheric dust content
C)past temperature
D)all of the above
15
Desertification results from
A)removal of native vegetation
B)lowering of the water table
C)plowing
D)all of the above
16
Glacial-interglacial climate fluctuations of the Pleistocene were caused by
A)sunspots
B)volcanic activity
C)orbital variations
D)all of the above
17
Which is a greenhouse gas?
A)carbon dioxide
B)methane
C)water vapor
D)all of the above





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