Quiz Answers!

Vocabulary Questions:

1) # 1 (A Sinuous ride composed largely of sand and gravel deposited by a stream flowing in a tunnel beneath a glacier near its terminus.)

2) # 3 (A Horn)

3) #1 (A crevasse)

Short Answer Questions: (answers may vary)

4) Glaciers flow in two main ways, one way being they move under their own weight. It involves a plastic like movement of the glacier. "Ice behaves as a brittle solid until the pressure upon it is equivalent to the weight of about 50 meters (165 feet) of ice." (Tarbuck & Lutgens, 123) One the ice becomes heavy enough, the glacier begins to flow as a plastic. The second way glaciers move is by the whole mass of ice, slipping along the ground.

5) Till is described as sediment that is deposited directly from the glacier. Till is deposited as the ice in the glacier melts, and drops its load. Because till is deposited directly from the glacier, it is not sorted at all. The second type of drift, stratified drift, are sediments laid down by glacial melt water. Stratified drift is stored according to the size and weight of the sediment being deposited.

6)When glaciers move through valleys once occupied by a stream, the ice modifies it in three ways: "The glacier widens, deepens, and straightens the valley, so that what was once a narrow V-shaped valley, is transformed into a U-shaped glacial through (Trabuck & Lutgens 127).

True or False

7) FALSE

8) TRUE

9) TRUE

10) FALSE

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