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Rocks & Weathering
Chapter 6: Section 1
Question | Answer |
---|---|
weathering | the chemical and physical 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 geologic principle that the same geologic processes that operate today operated in 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, as when iron oxidizes, forming rust |
permeable | characteristic of a material that is full of tiny, connected air spaces that water can seep through |