A crescent-shaped scarp on a high slope often appears above a rock glacier.
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Q138: Mass wasting and weathering are synonymous terms.
Q139: A talus slope has a characteristic angle
Q140: Debris flows are mass movements that occur
Q141: The "active layer" of permafrost must melt
Q142: A mudflow is a slope collapse with
Q144: In a flow, the center moves faster
Q145: Sometimes, landslides come down into a valley
Q146: Talus slopes are normally gently concave upward,
Q147: Mudflows are potentially more dangerous to humanity
Q148: A common maximum speed for landslides is
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