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The Changing Surface
Streams and Glaciers
| Term | Definition |
|---|---|
| Deposition | When sediments, soil and rocks are added to a land form or land mass. |
| Discharge rates (of streams) | The volume of water passing a certain point in a stream over a period of time. |
| Erosion | When water flow or wind remove soil and rock from one location on the Earth's crust, then transport it to another location where it is deposited. |
| Erratic | Slabs of bedrock that have been lifted and transported by glacier ice to subsequently be stranded above thin glacial or fluvioglacial deposits. |
| Eskers | A long winding ridge of post glacial gravel and other sediment; deposited by meltwater from glaciers or ice sheets |
| Gradient | Slope of a stream bed or hillside. |
| Hydrosphere | The water that is on the surface of the planet, underground, and in the air. |
| Kettles | Depression in ground surface formed by the melting of a block of glacier ice buried or partially buried by drift. |
| Moraines | Land form made largely of till. |
| Outwash | Beds of sand and gravel laid down by glacial melt water |
| Tills | Glacial drift composed of rock fragments that range from clay to boulder size and randomly arranged without bedding. |
| Weathering | The various mechanical and chemical processes that cause exposed rock to decompose. |
| Bedrock | A solid rock underlying loose deposits such as soil |
| Fluvioglacial Deposits | A variety of landforms associated w/ glaciers. For example eskers, moraines, kettles, and erratics |
| Load | Any sediment being carried to a different position. |
| Floodplain | An area of low lying ground adjacent to a river. |
| Delta | A landform formed from deposition and sediment carried by a river as it enters slower or stagnant water. |
| Drift | The gradual movement of sand and sediment down a beach or river. |
| Depression | A landform sunken down lower than the surrounding area |
| Alluvial fan | A fan-shaped mass of clay, silt, sand, and gravel deposited as the flow of a river decreases in velocity. |
| Sediment | Matter that settles at the bottom of an ocean or stream |
| Ascent | Moving from low to high altitude |
| Descent | Moving from high to low altitude |
| V shaped valley | A valley created by a moving stream |
| U shaped valley | A valley created by a moving glacier. |
| Transportation (geology) | When eroded materials are taken from one location to another. |
| Mass Wasting also known as Mass Movement | When rock and soil move downward. This can happens slowly with creep or quickly with a rockfalls, landslides, or mudflows. |
Created by:
bardwelt
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