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Earth Science

U5 L1 Weathering

TermDefinition
Mechanical Weathering Weathering that occurs when physical forces break rock into smaller and smaller pieces without changing the rock's mineral composition.
Frost Wedging The process that describes when water freezes and expands and it enlarges the cracks. After many freeze-thaw cycles, the rock breaks into pieces.
Talus Sections of rock that are wedged loose that tumble into large piles.
Exfoliation Slabs of outer rock separate like the layers of an onion and break loose. Common with granite.
Chemical Weathering The transformation of rock into one or more new compounds
Physical Processes that are especially important causes of mechanical weathering. Frost Wedging, Unloading, and Biological Activity
Created by: Mandelland
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