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Definition
| process that breaks large rocks into smaller rocks |
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| breakup and change of rocks and minerals mainly from the air, water, and frost |
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chemicals in the air mixed with water to make acid rain that eats away at limestone rock
oxygen reacts with iron and forms rust |
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| the moving of weathered material form one place to another |
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| when the moving or the material stops and drop off the sediment |
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| force of erosion along the shore line |
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| Examples of wave erosion: |
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Definition
| wave caves, sea arches and stacks, sand bars, and barrier island |
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| gravity pulls ice movement down a mountain |
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| sand deposits causing shallow water |
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| wind picks up loose sediment and carries it away |
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| What can be caused by wind erosion? |
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| When water combines with soil. |
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| huge slabs of rock break off along cracks and faults |
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| What are the 5 mass movements? |
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Definition
| soil creep, earth flow, avalanche, mudflow, and rockslide |
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Definition
| sediment and minerals carried along by moving water |
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| Causes/ Agents of Erosion |
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Definition
| gravity, water, ice, wind |
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| gravity slowly pulls soil down the slope of a hill |
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| water expanding when it freezes in rock or when rocks are wetted and dried turning into salt crystals that grow when it is dried |
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| Thermal Expansion and Contraction |
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Definition
| heating causes rocks to expand, cooling results in contraction;similar to frost wedging except happens in in climates with diurnal temp. changes |
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Term
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Definition
| rock breaks apart in layers that are parallel to the earth's surface. As rock is uncovered, it expands: this is called Exfoliation |
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| physical grinding of rock fragments |
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