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Author Question: Which factor(s) will most influence the depth of deep-ocean trenches? A) Compressive force B) ... (Read 47 times)

CQXA

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on: Jul 15, 2018
Which factor(s) will most influence the depth of deep-ocean trenches?
 
  A) Compressive force
  B) Rate of convection
  C) Density and composition of the mantle beneath
  D) Temperature and density of the plate

Question 2

The Cascadia subduction zone off the coast of Washington and Oregon famously lacks a well-defined deep-ocean trench. Why might this be the case?
 
  A) Compression from the convergent boundary has squeezed any potential trench closed.
  B) There is a massive amount of sediment fill from the Columbia River basin.
  C) The descending plate is warm and buoyant, so it subducts shallowly.
  D) There is a shallow angle of plate subduction, as well as large quantities of sediment infill.


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fraziera112

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Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: D


CQXA

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Reply 2 on: Jul 15, 2018
YES! Correct, THANKS for helping me on my review

smrtceo

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Reply 3 on: Yesterday
Excellent

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