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mechanical weatherin

TermDefinition
Release of pressure the underlying rocks expand and fracture parallel to the surface.
Freezing and thawing When water gets into a crack the water will freeze expand then thaw and do it over again.
Ice wedging When there is a crack in rock and water gets in it then freezes and expands and breaks the rock.
Abrasion The grinding and wearing away of rock surfaces through the mechanical action of other rock or sand particles.
Types of abrasion Wind, Water, and Gravity
Plant activity Plants often send their roots into existing cracks and rocks. Then when they get older they get stronger and eventually widenthe crack and break the rock.
Animal activity They burrow tthrough the soil and move soil particles around.
Mechanical weathering When a rock is physically broken into smaller pieces.
Created by: 200315422
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