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G Chapter 3 Vocabula

pages 64 - 81

TermDefinition
Erosion A process that wears away surface materials and moves them from one place to another.
Deposition Agents of erosion drop the sediments they are carrying as they lose energy.
Mass movement A type of erosion that happens as gravity moves materials downslope.
Slump A mass of material slips down along a curved surface.
Creep Sediments slowly shift their positions downhill.
Glacier A large mass of ice and snow moving on land under its own weight.
Plucking A process that adds gravel, sand, and boulders to a glacier's bottom and sides as water freezes and thaw, breaking off pieces of surrounding rock.
Till A mixture of different-sized sediments that is dropped from the base of a retreating glacier and can cover huge areas of land.
Moraine A big ridge of material piles p that looks as though it has been pushed along by a bulldozer.
Outwash Material deposited by the meltwater from a glacier, most often beyond the end of the glacier.
Eskers A type of outwash deposit that looks like a long, winding ridge.
Continental Glacier Cover ten percent of Earth's surface, mostly near the poles.
Valley Glacier Occur even in today's warmer global climate. Form above the snow line on mountains.
Deflation Wind blows across loose sediment, removing small particles such as silt and sand.
Abrasion Windblown sediment strikes rock, the surface of the rock gets scraped and worn away.
Loess Windblown deposit of tightly packed, fine-grained sediments.
Dune Mound formed when windblown sediments pile up behind an obstacle; common landform in desert areas.
Created by: tferraro