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Erosion and Depositi
-on Lessons 1-3
| Word | Definition |
|---|---|
| erosion | The process by which water, ice, wind, or gravity moves weathered particles of rock and soil. |
| sediment | Small solid pieces of material that come from rocks or the remains of organisms; earth materials deposited by erosion |
| deposition | Process in which sediment is laid down in new locations |
| gravity | The attractive force between objects the force that moves objects downhill |
| mass movement | Any one of the several processes by which gravity moves sediment downhill |
| runoff | Water that flows over the ground surface rather than soaking into the ground |
| rill | A tiny groove in soil made by flowing water |
| gully | A large channel in soil that carries runoff after a rainstorm |
| stream | A channel through which water is continually flowing downhill |
| tributary | A stream or river that flows into a larger river |
| flood plain | The flat, wide area of land along a river |
| meander | A looplike bend in the course of a river |
| oxbow lake | A meander cutoff from a river |
| Delta | A landform made of sediment that is deposited where a river flows into an ocean or lake |
| alluvial fan | A wide, sloping deposit of sediment formed where a stream leaves a mountain range |
| groundwater | water that fills the cracks and spaces in underground soil and rock layers |
| stalactite | An icicle-like structure that hangs from the ceiling of a cavern |
| stalagmite | A column like form that grows upward from the floor of a cavern |
| karst topography | A region in which a layer of limestone close to the surface creates deep valleys, caverns, and sinkholes |
| glacier | Any large mass of ice that moves slowly over land |
| continental glacier | A glacier that covers much of a continent or large island |
| ice age | Time in Earth's history during which glaciers covered large parts of the surface |
| valley glacier | A long narrow glacier that forms when snow and ice build up in a mountain valley |
| plucking | The process by which a glacier picks up rocks as it flows over land |
| till | The sediments deposited directly by a glacier |
| moraine | A ridge formed by the till deposited at the edge of the glacier |
| kettle | A small depression that forms when a chunk of ice is left in a glacial till |
Created by:
abelan001
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