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Unit 2 lesson 1-2
| Term | Definition |
|---|---|
| Erosion | the process by which wind, water, ice, or gravity transports soil and sediment from one location to another |
| Deposition | the process in which material is laid down |
| Floodplain | an area along a river that forms from sediments deposited when the river overflows its banks |
| Delta | a mass of material deposited in a triangular or fan shape at the mouth of a river or stream |
| Alluvial Fan | a fan-shaped mass of material deposited by a stream whe the slope of the land decreases sharply |
| Groundwater | the water that is beneath the earth's surface |
| Shoreline | the boundary between land and a body of water |
| Beach | an area of the shoreline that is made up of deposited sediment |
| Sandbar | a low ridge of sand deposited along the shore of a lake or sea |
| Barrier Island | a long ridge of sand or narrow island that lies parallel to the shore |
| Dune | a mound of wind-deposited sand that moves as a result of the action of wind |
| Loess | fine-grained sediments of quartz, feldspar, hornblende, mica, and clay deposited by the wind |
| Glacier | a large mass of ice that exists year-round and moves over land |
| Glacial Drift | the rock material carried and deposited by glaciers |
| Creep | the slow downhill movement of weathered rock material |
| Rockfall | the rapid mass movement of rock down a steep slope or cliff |
| Landslide | the sudden movement of rock and soil down a slope |
| Mudflow | the flow of a mass of mud or rock and soil mixed with a large amount of water |
| Gradient | the measure of the change in elevation over a certain distance |
| Load | materials carried by a stream |
| Discharge | the amount of water that a stream carries in a given amount of time |
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jg.18589
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