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Glacial Erosion

Lesson 3 pg.81

Glacier Geologists define glacier as any large mass of ice is a that moves slowly over land. (pg.81)
Continental Glacier A continental glacier is a glacier that covers much of a continent or large island (pg.81)
Ice Age Many times in the past, continental glaciers have covered larger parts of Earth's surface. (pg.81)
Valley Glacier A valley glacier is a long, narrow glacier that forms when snow and ice build up in a high mountain valley.(pg.82)
Plucking As a glacier flows over the land, it picks up rocks in the process called plucking. (pg.83)
Till The mixture of sediments that a glacier deposits directly on the surface is called till. (pg.84)
Moraine The till deposited at the edges of a glacier forms a ridge called a moraine. (pg.84)
Kettle A kettle is a small depression that forms when a chunk of ice is left in glacial till.
Created by: ard200925603