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11 Cards in this Set
- Front
- Back
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What are the types of of physical weathering |
Frost wedging Salt crystal growth Sheeting Biological activity |
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Frost wedging |
Water becomes trapped in a crack, freezes and expands, wedging the crack open overtime |
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Salt crystal growth |
Dissolved salt precipitates from water and expands to form crystals in open pore spaces in rock |
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Sheeting |
Decrease in pressure as overlying rock is proded away, causes exfoliation of igneous and metamorphic rock |
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Biological activity |
Plant and burrowing animals live in rock |
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What are the types of mass movement? |
Slump Debris flows Creep |
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Creep |
Slow downhill movement due to seasonal changes |
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Slump |
Sliding a mass moving as a unit along a curved surface |
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Debris flow |
Fast movement of debris and water |
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Figure 4.13 |
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Figure 4.34 |
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