题目内容

Which factor exerts the greatest control over the velocity of debris flows and the distance they will travel?A) B) C) D)

A. Vegetation
B. Water content
C. Slope angle
D. Friction

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Which of the following types of flows will have the largest particle sizes?

A. Debris flow
B. Quick clay
C. Mudflow
D. Earthflow

Which of the following factors does not influence mass wasting?A) B) C) D)

A. Gravity
B. Geologic age
C. Water
D. Vegetation

Which sediment size has the steepest angle of repose?

A. Gravel
B. Sand
C. Silt
D. Clay

Most rapid and spectacular mass-wasting events occur in areas of rugged, geologically young mountains.