Multiple Choice
At depths of greater than 60 m,ice moves by plastic deformation.What causes this transition from brittle to ductile behavior?
A) An increase in temperature causes the glacier to melt and slide.
B) An increase in pressure increases friction and melts the ice.
C) An increase in the pressure allows for only minute deformation.
D) A decrease in the amount of trapped sediments allows more flow.
Correct Answer:

Verified
Correct Answer:
Verified
Q6: Sediments deposited directly by glaciers as they
Q10: Cirques and horns are features associated with
Q18: At the present,glaciers cover about _ of
Q19: The current interglacial interval began a little
Q28: Today,continental glaciers are limited to Antarctica and
Q29: An angular peak surrounded by three or
Q30: The effect of periodic changes in Earth's
Q36: Currently,almost all the glaciers on Earth are
Q38: Glacial ice exhibits _ behavior near the
Q39: The Mars rover Curiosity has recently found