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Erosion
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Process in which surface materials are worn away and transported from one place to another by agents such as gravity, water, wind, and glaciers
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Deposition
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Dropping of sediments that occurs when an agent of erosion, such as gravity, a glacier, wind or water, loses its energy and can no longer carry its load.
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Mass movement
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Any type of erosion tha toccurs as gravity moves materials downslope
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Slump
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A type of mass movement that occurs when a mass of material moves down a curved slope
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Creep
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A type of mass movement in which sediments move sownslope very slowly; common in areas of freezing and thawing, and can cause walls, trees, and fences to lean downhill
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Glacier
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Large, moving masses of ice and snow that change large areas of Earth's surface through erosion and deposition
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Plucking
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Process that adds gravel, sand and boulders to a glacier;s bottom and sides as water freezes and thaws, breaking off pieces of surrounding rock
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Till
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Mixture of different-sized sediments that is dropped from the base of a retreating glacier and can cover huge areas of land
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Moriane
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Large ridge of rocks and soil deposited by a glacier when it stops moving forward
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Outwash
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Material deposited by meltwater from a glacier
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Deflation
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A type of erosion that occurs when wind blows over loose sediments, removes small particles, and leaves coarser sediments behind
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Abrasion
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A type of erosion that occurs when windblown sediments strike rocks and sediments, polishing and pitting their surface
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Loess
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Windblown deposit of tightly packed, fine-grained sediments
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Dune
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Mound formed when windblown sediments pile up behind an obstacle, common landform in desert areas.
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