21 terms

Erosion and Deposition

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Glacier
any large mass of ice that moves slowly over land and forms in areas where more snow falls
Continental Glaciers
covers land or continents
Valley Glaciers
forms high in the mountains when snow and ice build up in mountain valleys
U-Shaped Valleys
valley glaciers stay are smaller that continental glaciers and form
Plucking
happens as glaciers move across land. Glacier picks up a boulder and deposits it somewhere else (erratic)
Abrasion
as a glacier drags rocks along, the land is gouged and scratched by rocks
Till
mixture of sediments that a glacier deposits directly on the surface
Ice Age
when continental glaciers cover the Earth's surface
Moraine
Till deposited at the edges of a glacier forms a ridge called
Kettle Lake
small depression that forms when a chunk of ice is left in glacial till
Sediment left by glaciers is...
Unsorted
How does shape impact sediment deposition?
Round sediments are deposited faster
V-shaped Valleys
Valleys left by streams
Drumlin
Hill left by a glacier of unsorted sediment
Agents of erosion
wind, running water, glaciers, and gravity
Watershed
All the bodies of water that flow into a larger body of water
Tributary
A stream or river that flows into a larger stream or river
Sorted and layered
Sediment left by streams flowing into a lake or body of water
erosion
the transportation of sediment
weathering
the break down of sediment
depostion
the process of sediment being deposited