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Author Question: How do glaciers affect underlying rock? What will be an ideal ... (Read 75 times)

vicky

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on: Jul 29, 2018
How do glaciers affect underlying rock?
 
  What will be an ideal response?

Question 2

Glaciers flow downslope. A glacier moves fastest
 
  A) when it begins to melt.
  B) at its surface and in the center.
  C) at its base and along its sides.
  D) when ablation exceeds accumulation.


Jane

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: Glaciers erode rock by scraping, plucking, and grinding underlying rock into sizes ranging from boulders to fine dust. Alpine glaciers erode cirques, horns, and aretes at their heads; U-shaped valleys and hanging valleys in their main courses; and fjords where glaciers end their journey at the sea. Continental glaciers erode the land surface that they cover, smoothing and rounding the entire underlying topography.

Answer to Question 2

Answer: B


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