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Chapter 6
Concept 2 Quiz
Concept 2 Quiz
Discuss glacial movement and investigate the budget of a glacier.
This activity contains 13 questions.
The overall movement within a glacial ice sheet is generally referred to as flow.
True
False
The rates that glaciers advance vary considerably from one glacier to another but can be as great as several kilometers per day.
True
False
The balance or imbalance between the accumulation at the upper end of the glacier and the loss at the lower end defines the ___________ of the glacier.
drag
budget
snowline
wastage
none of the above
Some of the snow and ice melts at the lower end of the glacier and this loss of glacial material is termed
melting
recession
deficit
ablation
absolution
Icebergs are formed when a glacier reaches the sea through a process called
flow
tension
calving
plastic flow
all of the above
Crevasses form within brittle ice in the zone of fracture.
True
False
If the terminus of a glacier slowly retreats upvalley, the flow within the glacier itself
spreads laterally
recedes upvalley
flows forward
stops
none of the above
Ice formation within a glacier occurs
in the zone of wastage
at the snow line
in the zone of accumulation
within icebergs
in the zone of ablation
The status of glacier movement at the margin of the glacier depends upon
plastic flow
the snow line
seasonal snowfall
the budget of the glacier
ablation
Plastic flow is more likely at depth within the glacier.
True
False
The majority of the world's glaciers are probably retreating.
True
False
Flow within an alpine glacier is greatest
when the terminus is stationary
in colder seasons
along the floor of the valley
along valley walls
at the center of the glacier
Label the areas of a glacier used to determine the budget and status of a glacier.
(Figure from
Earth Science
11th edition, copyright Prentice Hall)
This question presents 3 items numbered 13.1 through 13.3. Each item is presented with a pulldown menu containing the letters A through C.
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
13.1 zone of wastage
[hint]
A
B
C
13.2 crevasses
[hint]
A
B
C
13.3 zone of accumulation
[hint]
A
B
C
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