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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 |