填空题
Select the appropriate phrases from the answer choices and match
them to the type of mass wasting to which they refer. TWO of the answer choices
will NOT be used. This question is worth 4 points. Answer Choices A．Occur when a mass of
rock moves downslope as a unit B．Involve the mass movement of
soil containing a large amount of water C．May have the
consistency of wet concrete or soup D．Occur where sloping rock
layers have cracks parallel to the slope E．Occur when a layer
of snow breaks loose and moves rapidly downslope F．Include the
transportation of organic materials by wind and water G．Float
on a thin layer of air as they move rapidly down a mountain
H．Move slowly but with enough force to carry away trees and houses
I．Occur on slopes where layers of volcanic debris become extremely
wet