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Dynamic Earth MRMS

earth science,

TermDefinition
weathering Process that breaks down rock – heat, cold, water, ice, oxygen, carbon dioxide, freezing, thawing,
Horizontality Layers are laid down horizontally
Uniformitarianism The same things that happen today happened in the past
mechanical weathering Physically broken into smaller pieces – freeze/thaw, release of pressure, gravity, animals, plant growth, abrasion, ice wedging
chemical weathering Chemical changes – action of water, oxygen, carbon dioxide, living organisms, acid rain
erosion Movement of weathered particles from one place to another: wind, water, ice, gravity
Sediment Material moved by erosion- made by weathering and erosion
deposition Sediment is placed in new areas
mass movement Caused by gravity, moves sediment downhill, landslide, mudslide, creep, slump
water erosion Runoff- water moves over surface, rills, gully, streams, tributary,
erosion by Rivers Creates valleys, waterfalls, flood plains, meanders, oxbow lakes
deposits by rivers Particles fall onto riverbed, creates alluvial fans, deltas, add soil to flood plain
groundwater erosion Underground water causes erosion by chemical weathering, cave formation, stalactite, stalagmite, sinkholes
glaciers Large mass of ice that moves over land, erode land by plucking and abrasion
plucking Glacier picks up rocks as it moves over land, gets moved to bottom of glacier
waves Shape coast by erosion, breaking down rock and transporting sand and other sediment, deposit sediment, makes beaches
wind Removes surface materials (deflation), abrasion (polishes), can cause sand dunes and loess deposits (finer than sand)
Created by: caron.kosters
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