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10 Cards in this Set
- Front
- Back
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uniformitarianism
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The geologic principle that the same geologic processes that operate today operated in the past to change Earths surface.
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Humus
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Dark colored organic material in soil.
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Bedrock
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The solid rock beneath the soil.
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Soil
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The loose, weathered material on earths surface in which plants can grow.
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Permeable
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Characteristic of a material full of tiny, connected air spaces that water can seep through.
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Oxidation
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A chemical change in which a substance combines with oxygen, as when iron forms rust.
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Ice wedging
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Process that splits rock when water seeps into cracks, then freezes and expands.
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Abrasion
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The grinding away of rock by other rock particles carried in water, ice, or wind.
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Chemical Weathering
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the process that breaks down rock through chemical changes.
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Mechanical Weathering
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the type of weathering in which rock is physically broken into smaller pieces.
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