The __________ is not the name of a Pleistocene glacial episode in North America.
The __________ was the most recent Pleistocene glacial episode in North America.
__________ is one of the two, major flow mechanism in a glacier.
A) Basal slip
B) Crevassal slip
C) Frost heaving
D) Morainal sliding
Where is the world's largest ice sheet located today?
B) Russia, Siberia
Approximately how long ago did the last of the great North American ice sheets melt?
A) 1500 yrs
B) 1.5 million yrs
C) 15,000 yrs
D) 150,000 yrs
__________ has speeds comparable to those of a flowing alpine glacier.
A) Soil creep
D) Basaltic lava flows
The bottom or downward tip of a crevasse marks the __________.
A) boundary between parts of the glacier moving by basal sliding and crevassal slip
B) boundary between the basal sliding and external flowage zones
C) bottom of the basal sliding zone
D) top of the internal deformation and flowage zone
Which one of the following applies to a valley glacier that lengthens (extends its
terminus downslope) over a period of many years?
A) Wastage exceeds accumulation.
B) Accumulation exceeds wastage.
C) Accumulation and wastage are about equal.
D) none of the above
Abrasion and plucking generally involve what part of a glacier?
A) the internal, flowage zone
B) the snout zone
C) the surface, brittle zone
D) the basal, sliding zone
A __________ cross-valley profile is typical of canyons and valleys eroded and
deepened by alpine or valley glaciers.
__________ are erosional features produced by valley/alpine glaciers.
A(n) __________ is a depositional feature composed of till and only associated with
continental glaciation, not with alpine glaciers.
D) outwash deposit
Match the feature with the appropriate material.
A) till B) outwash
C) solid rock
__________ first developed the theory that small variations in the Earth-Sun
distance were responsible for short term, climatic oscillations (1000 to 100,000 years).
A) H. Goering
B) H. Marcee
C) G. Zukhov
D) M. Milankovitch
The great, Southern Hemisphere glaciation that affected parts of Africa, South
America, India, Australia, and Antarctica occurred __________.
A) in late Paleozoic time
This is the end of the preview. Sign up
access the rest of the document.