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Glossary of Chapter 8 Earth Science Vocabulary

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The process by which water, ice, wind, or gravity moves fragments of rock and soil.
erosion
Small, solid particles of material from rocks or organisms which are moved by water or wind, resulting in erosion or deposition.
sediment
The process by which sediment settles out of the water or wind that is carrying it, and is deposited in a new location.
deposition
Any one of several processes by which gravity moves sediment downhill.
mass movement
A huge mass of ice and snow that moves slowly over the land.
glacier
A long, narrow glacier that forms when snow and ice build up in a mountain valley.
valley glacier
A glacier that covers much of a continent or large island.
continental glacier
Cold time periods in Earth’s history, during which glaciers covered large parts of the surface.
ice ages
The process by which a glacier picks up rocks as it flows over the land.
plucking
The sediments deposited directly by a glacier.
till
A ridge formed by the till deposited at the edge of a glacier.
moraine
A small depression that forms when a chunk of ice is left in glacial till.
kettle

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