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Chap 13 less 2 & 3
| Term | Definition |
|---|---|
| How does moving water cause erosion? | It is taken up by plants or goes into a runoff. |
| Runoff | When water moves over the land, it carries particles with it. |
| Rills | Tiny grooves in the soil, formed by runoffs. |
| Gully | A large groove, or channel, in the soil that carries runoff after a rainstorm. |
| Stream | A channel along which water is continuously flowing down a slope. |
| Tributary | A stream or river that flows into a larger river. |
| What land features are formed by water erosion? | Through erosion, a river creates valleys, waterfalls, flood plains, meanders, and oxbow lakes. |
| Flood plain | The flat, wide area of land along a river. |
| Meander | A loop like bend in the course of a river. |
| Oxbow lake | A meander that has been cut off from the river. |
| What land features are formed by water deposition? | Deposition creates land forms such as alluvial fans and deltas. |
| Delta | Sediment deposited where a river flows into an ocean or lake builds up a land form. |
| Alluvial fan | A wide, sloping deposit of sediment formed where a stream leaves a mountain range. |
| Ground water | Underground water. |
| Stalactite | A deposit that hangs like an icicle from the roof of a cave. |
| Stalagmite | A cone shaped of this material from the cave floor. |
| Karst topography | Landscape such as a sinkhole. |
| Glacier | Any large mass of ice that moves slowly over land. |
| How do glaciers form and move? | Glaciers can form only in an area where more snow falls than melts. |
| Continental glacier | A glacier that covers much of a continent or large island. |
| Ice ages | When continental glaciers covered much of Earth's surface. |
| Valley glacier | A long, narrow glacier that forms when snow and ice build up high in a mountain valley. |
| How do glaciers cause erosion and deposition? | The two processes by which glaciers erode the land are plucking and abrasion. |
| Plucking | When a glacier flows over the land, it picks up rocks. |
| Till | The mixture of sediments that a glacier deposits directly on the surface. |
| Mormaine | The till deposited at the edges of a glacier forms a ridge. |
| Kettle | A small depression that forms when a chunk of ice is left in glacial till. |
Created by:
kwinkler
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