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BMMS 6Science Ch 3
BMMS Science Ch 3 - Erosion and Deposition
| Question | Answer |
|---|---|
| sediment | material moved by erosion |
| deposition | occurs where the agents of erosion deposit, or lay down, sediment |
| gravity | the force that moves rock and other materials downhill |
| mass movement | any one of several processes that move sediment downhill; slump, creep, landslide, mudflows |
| runoff | water that moves over Earth's surface |
| rill | tiny grooves, or channels, in the soil formed by runoff |
| gully | large groove, or channel, that carries runoff after a rainstorm |
| stream | cahnnel along which water is continually flowing |
| flood plain | flat, wide area of land along a river |
| meander | loop-like bend in hte course of a river |
| oxbow lake | a meander that has been cut off from the river |
| alluvial fan | wide, sloping deposit of sediment formed where a stream leaves a mountain range |
| delta | landform created by by a build up of sediment deposited where a river flows into an ocean or lake |
| load | the amount of sediment a river can carry |
| headland | a part of the shore that sticks out into the ocean |
| beach | area of wave-washed sediment along a coast |
| longshore drift | process in which some sediment is moved down the beach with the current due to waves repeatedly hitting the beach |
| spit | a beach that projects like a finger out into the water |
| sand dune | a deposit of wind-blown sand |
| deflation | process by which wind removes surface materials |
| loess | fine, wind-deposited sediment |
| glacier | large mass of ice that moves slowly over the land |
| continental glacier | a galcier that covers much of a continent or large island |
| ice ages | when continental glaciers cover large parts of Earth's surface |
| valley glacier | lang, narrow glacier that forms when snow and ice build up high in a mountain valley |
| plucking | the process in which a glacier picks up rocks as it moves over the land |
| till | the mixture of sediments that a glacier deposits directly on the surface |
| moraine | till deposited at the edges of a glacier at the farthest point reached by a glacier |
| kettle | a small depression that forms when a chunk of ice is left in glacial till; when the ice melts, the kettle remains |
Created by:
mrpowers
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