What is glacial flour?
A. one of the stages of glacial ice formation
B. finely ground rock that is part of a glaciers load
C. general term for all material moved by glaciers
D. all sized particles that are part of a glaciers load
E. huge boulders deposited by retreating glaciers
Question 2What is the process by which the bedrock underlying a glacier is worn down by rock debris that is dragged by the moving ice?
A. glacial plucking
B. glacial advance
C. glacial abrasion
D. glacial retreat
E. glacial flour
Question 3What is the process by which glaciers pick up rocks by refreezing around rocky protrusions?
A. glacial plucking
B. glacial advance
C. glacial abrasion
D. glacial retreat
E. glacial flour
Question 4What is true about either glacier flow or glacier advance?
A. Advance is movement of ice within a glacier.
B. Flow means the outer margin moves forward.
C. Advance only occurs with flow of entire glacier.
D. Flow means ice is always moving within a glacier.
E. Advance is always occurring within a glacier.
Question 5What is being described when an entire glacial ice mass slides over its bed on a lubricating film of water?
A. plastic ice flow
B. basal slip
C. accumulation
D. glacial advance
E. melting zone
Question 6Where on a glacier is the equilibrium line?
A. where ablation exceeds accumulation
B. at the foot, where its retreat stabilizes
C. where accumulation balances ablation
D. at the upper portion, where its growth stabilizes
E. where accumulation exceeds ablation
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