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Science Vocabulary
vocabulary for science
9
Economics
8th Grade
11/10/2011

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Term
Weathering
Definition
The chemical and physical process that breaks down rock at Earth's surface.
Term
Erosion
Definition
The process by which water, wind, or gravity moves weathered rock or soil.
Term
Mechanical Weathering
Definition
The type of weathering in which rock is physically broken into smaller pieces.
Term
Abrasion
Definition
The gringing away of rock by other rock particles carried in water, ice, or wind.
Term
Chemical Weathering
Definition
The process that breaks down rock through chemical changes.
Term
Oxidation
Definition
A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming crust.
Term
Permeable
Definition
Characteristic of a meterial that is full of tiny, connected air spaces that water can seep through.
Term
Uniformitarianism
Definition
The geologic principle that the same geologic process that was operated today operated the past to change Earth's surface.
Term
Ice wedging
Definition
Process that spilts rock when water seeps into cracks, then freezes and expands.
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