click below
click below
Normal Size Small Size show me how
Glacial Erosion
Lesson 3 pg.81
Term | Definition |
---|---|
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. |