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Sci8-Unit2-Erosion

Sci-8-Unit2-Part A - Erosion

TermDefinition
erosion the process by which sediment and other materials are moved from one place to another
deposition the process by which eroded material is dropped
gradient the measure of the change in elevation over a certain distance.
load materials carried by a stream
discharge the amount of water carried by a stream in a given amount of time
channel the path of a stream
floodplain the flat area surrounding a stream or river where nutrient-rich sediments are deposited during a flood
delta wetlands that form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river.
alluvial fan a fan-shaped deposit of sediments on dry land, typically at the end of a river running between two steep mountains
groundwater water located in rocks below ground
headlands finger-shaped projections that form when softer rock around it erodes more quickly
sandbar an underwater or exposed ridge of sand, gravel, or shell material
barrier island a long narrow island, usually made of sand, that forms parallel to the shoreline a short distance into the water
abrasion the grinding and wearing down of rock surfaces by other rock or sand particles
deflation the removal of fine sediment by wind
dunes mounds of wind-deposited sand
loess thick deposits of windblown, fine-grained sediments
glacier a large mass of moving ice that forms by compacting of snow by natural forces
glacial drift a general term that refers to all materials carried and deposited by glaciers
creep extremely slow movement of material down a slope
landslide the sudden, rapid movement of a large amount of material down a slope
mudflow rapid movement of a large amount of mud down a slope
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