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Weathering
6.1 Vocabulary Review
| Term | Definition |
|---|---|
| weathering | the mechanical/physical and chemical processes that break down rock at Earth's surface |
| erosion | the process by which water, ice, wind, or gravity moves weathered rock or soil |
| uniformitarianism | the geological principle that the same geological processes that operate today operated i the past to change Earth's surface |
| mechanical weathering | the type of weathering in which rock is physically broken into smaller pieces |
| abrasion | the grinding away of rock by other rock particles carried in water, ice, or wind |
| ice wedging | process that splits rock when water seeps into cracks, then freezes and expands |
| chemical weathering | the process that breaks down rock through chemical changes |
| oxidation | a chemical change in which a substance combines with oxygen forming rust |
| permeable | having tiny, connected air spaces through which water can seep |