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GLY 2010 Final Exam With Complete Solution
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GLY 2010 Final Exam WithComplete Solution
Geologists distinguish among different types of mass wasting based on factors such as
the ____________ of
the moving material and the rate of movement. - Answer composition
One of the most problematic aspects of landslides is that large-scale, cataclysmic
examples are the norm,
whereas small-scale landslides are much more rare. - Answer false
Mass wasting always involves a sudden movement of material downslope. - Answer
false
To the geologist, ____________. - Answer all landslides are mass movements, but not all
mass movements are landslides
Which of the following types of mass movement takes place most gradually? - Answer
creep
Which of the following types of mass movement is least coherent (most like a liquid)? -
Answer mudflow
Slumps typically arrive intact at the bottom of a slope. - Answer false
Which of the following types of mass movement always travel down curved surface? -
Answer slump
Strictly speaking, which of the following types of mass movement is a landslide? -
Answer rock slide
Which type of mass movement includes a large proportion of ash derived from a
volcanic eruption? - Answer lahar
____________occur(s) when regolith moves slowly downslope due to freezing and
thawing. - Answer Creep
All types of mass wasting have approximately the same velocities. - Answer false
Between subaerial and submarine mass movements, we have a much better historical
record of
____________. - Answer submarine mvements
Which of the following types of mass movement is likely to move most rapidly? - Answer
, rock slide
____________occur(s) where thawed sediments move downslope over permafrost. -
Answer Solifluction
____________occur(s) when debris or snow mixes with air to form a chaotic cloud. -
Answer Avalanches
____________occur(s) when a semicoherent mass of material moves downslope on a
failure surface. - Answer Slumps
____________ are likely to occur along volcanic slopes. - Answer Lahars
____________ may trigger tsunamis. - Answer Submarine mass movements
A ____________ may form at the head of a slump. - Answer failure surface
Submarine mass movements have been found along hot-spot volcanoes and active plate
boundaries. These
massive slumps have been attributed to ____________. - Answer tectonic activity
In cold, dry mountainous climate, rock glaciers consisting of rocks held together by a
smaller volume of ice can slide down slopes. - Answer true
The principle difference between a debris flow and a mudflow is the ____________. -
Answer grain size of the moving mass
The principle difference between a lahar and a mudflow is the ____________. - Answer
lahar contains pyroclastic debris from a volcanic eruption
The principle difference between a debris flow and a debris slide is the ____________. -
Answer debris flow contains abundant water, whereas the debris slide is dry
The principle difference between a slump and a debris slide is the ____________. -
Answer shape of the path taken by the moving mass
The principle difference between a debris slide and a debris avalanche is the
____________. - Answer grain size of the moving mass
Ground shaking can transform wet sediments into liquid-like slurries in a process known
as ____________. - Answer liquification
The immediate cause of incidents of mass movement is ____________. - Answer
gravitation
For dry sediments, the angle of repose is typically between ____________ and
____________ degrees. - Answer 30; 37
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