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Weathering & Erosion
Unit 3
| Term | Definition |
|---|---|
| Weathering | the natural process by which atmospheric and environmental agents, such as wind, rain, and temperature changes, disintegrate and decompose rocks |
| Mechanical Weathering | the process by which rocks break down into smaller pieces by physical means |
| Chemical Weathering | the process by which rocks break down as a result of chemical reactions |
| Abrasion | the grinding and wearing away of rock surfaces through the mechanical action of other rock or sand particles |
| Weathering | the natural process by which atmospheric and environmental agents, such as wind, rain, and temperature changes, disintegrate and decompose rocks |
| Mechanical Weathering | the process by which rocks break down into smaller pieces by physical means |
| Chemical Weathering | the process by which rocks break down as a result of chemical reactions |
| Abrasion | the grinding and wearing away of rock surfaces through the mechanical action of other rock or sand particles |
| Acid Precipitation | rain, sleet, or snow that contains a high concentration of acids |
| Ice Wedging | Water seeps into cracks during warm weather. When temperatures drop, the water freezes and expands. The ice then pushes against the sides of the crack. This causes the crack to widen |
| Plant weathering | Plant roots crack rocks; lichen grows on rocks |
| Animal weathering | Burrowing animals cause mechanical weathering and contributes to chemical weathering |
| Deposition | the process in which material is laid down |
| Caves | created by the chemical weathering and erosion of soft rock like limestone by underground acids and water |
| Mass Movement | the movement of a large mass of sediment or a section of land down a slope |
| Oxidation | a chemical reaction in which an element, such as iron, combines with oxygen to form an oxide |
| Differential Weathering | the process by which softer, less weather resistant rocks wear away at a faster rate than harder, more weather resistant rocks do |
| 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 |
| Glacier | a large mass of moving ice |
| Mass Movement | the movement of a large mass of sediment or a section of land down a slope |
Created by:
jeffsingleton
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