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12.1 Vocabulary (Sci
Term | Definition |
---|---|
Weathering | The chemical and physical processes that break down rock and other substances. |
Permeable | Characteristic of a material that contains connected air spaces, or pores, that water can seep through easily. |
Abrasion | The grinding away of rock by other rock particles carried in water, ice, or wind. |
Erosion | The process by which water, ice, wind, or gravity moves weathered particles of rock and soil. |
Uniformitarianism | The geologic principle that states that same geologic processes that operate today operated in the past to change Earth's surface. |
Oxidation | A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust. |
Frost 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. |
Mechanical Weathering | The type of weathering in which rock is physically broken into smaller pieces. |