20 Multiple choice questions
- The distinct step along the upslope edge of a slump where the regolith detached.
- The gradual downslope movement of regolith.
- The detachment or sliding horizon on which downslope movement of rock or debris occurs.
turbulent cloud of debris mixed with air that rushes down a steep hill
slope at high velocity; the debris can be rock and/or snow.
movement in which a mass of regolith detaches from its substrate along a
spoon-shaped sliding surface and slips downward semicoherently.
- A situation or setting caused by natural processes that can result in damage to society.
- The gravitationally caused downslope transport of rock, regolith, snow, or ice.
thick slurry formed when volcanic ash and debris mix with water, either
in rivers or from rain or melting snow and ice on the flank of a
- Excavation at the base of a slope that results in the formation of an overhang.
- A downslope movement of mud at slow to moderate speed.
- The transformation of seemingly solid sediment into a liquid-like slurry, in response to ground shaking.
- A sudden downslope movement of material consisting only of regolith.
- The angle of the steepest slope that a pile of uncemented material can attain without collapsing from the pull of gravity.
type of creep characteristic of tundra regions; during the summer, the
uppermost layer of permafrost melts, and the soggy, weak layer of ground
then flows slowly downslope in overlapping sheets.
- A sudden movement of rock and debris down a nonvertical slope.
- A sudden collapse of bedrock down a steep slope.
- A sudden collapse of disaggregated material on a steep slope.
- A downslope movement of mud mixed with larger rock fragments.
- A wedge-shaped pile of rock fragments that accumulates at the base of a cliff.
- A sudden downslope movement of rock.