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| natural process that causes rocks to break down |
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| breaks rocks into smaller pieces without changing them chemically |
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| freezing and thawing cycle that breaks rocks apart; mechanical weathering |
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| Plant root action and animal burrowing are examples of ___ weathering. |
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| Plant root action and animal burrowing are examples of ___ weathering. |
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| natural process of weathering that involves chemical change of the rock |
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| Water and carbon dioxide form this acid which reacts chemically with many rocks. |
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| This acid is formed from a plant's release of tannin which dissolves some rock minerals |
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| oxygen can cause rocks containing iron to rust in this process |
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| mixture of weathered rock, organic matter, water, and air that supports the growth of plant life |
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| Wearing away and removal of rock; occurs because of gravity, ice, wind, and water |
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| gravity pulls rock or sediment down slopes |
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| Sediments move downhill slowly |
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| Rock or sediment moves downhill along a curved slope |
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| rock layers break loose and slide downhill |
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| Mass of wed sediment that flows downhill over the ground surface |
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| Erosion caused by glaciers removing loose pieces of soil |
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| Blows small articles from Earth's surface in a process deflation |
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| Water flowing on Earth's surface causing erosion |
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