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GY 102 Assignment|Questions with Complete Verified Correct Answers
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GY 102 Assignment|Questions withComplete Verified Correct Answers
The top of a glacier moves in a ______ fashion; the middle of the glacier behaves ______.
A. plastic; brittlely
B. brittle; plastically - ✔B. brittle; plastically
Glacial ice forms ______.
A. only from sleet and freezing rain; snow is too "fluffy" to make glacial ice
B. when meltwater from melted snow accumulates in lowlands and valleys and then
freezes C. as snowflakes are buried and compressed, eventually becoming crystalline ice
D. from frozen seawater or freshwater that has flooded a continent or valley - ✔C.
as snowflakes are buried and compressed, eventually becoming crystalline ice.
At the leading edge of a glacier entering into a body of water, blocks of ice may break off in a
process called ______. When these blocks are floating in the water, they are called ______.
A. calving; icebergs
B. iceberging; shelves
C. calves; glaciers
D. crevasses; ice blocks - ✔A. Calving; icebergs
What is the major input source for glaciers?
A. Sublimation
B. Meltwater from other glaciers
C. Groundwater
, D. Snow - ✔D. Snow
How does the movement of ice sheets differ during glacial and interglacial periods?
During glacial periods, ice sheets ______.
A. flow to the south, and during interglacial periods, they flow to the north
B. advance, but during interglacial periods, they retreat
C. advance mainly by basal slip, but during interglacial periods, they advance by basal surge
D. move away from one another, but during interglacial periods, they move toward one
another - ✔B. advance, but during interglacial period, they retreat
What processes associated with glaciers affect the landscape they exist in?
A. Erosion only
B. Erosion and deposition
C. Deposition only - ✔B. erosion and deposition
Match the phrases to describe how different parts of a glacier move.
1. Brittle behavior
2. Ductile behavior
3. Plastic behavior - ✔1. Brittle behavior: occurs on the top of the glacier.
2. Ductile behavior: occurs due to the overlying weight of the ice.
3. Plastic behavior: is caused by internal shearing.
Sediment transported on top of a glacier is being transported ______, whereas sediment being
transported within the glacier is being transported ______.
A. supraglacially; englacially
B. subglacially; suprgacially
C. englacially; subglacially
D. englacially; supraglacially - ✔A. supraglacially; englacially
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