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Author Question: Which of the following best describes the effect of convective flow on the elevation of Earth's ... (Read 58 times)

wenmo

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Which of the following best describes the effect of convective flow on the elevation of Earth's major landforms?
 
  A) Convective flow adds more material to the base of the lithosphere, making it downwarp.
  B) Rotation of convecting mantle material smoothes out wrinkles in the surface.
  C) Hot rising material upwarps the landscape whereas downward flow causes downwarping.
  D) Subduction of oceanic plates disrupting the convective flow on the mantle, resulting in hot spots burning through the crust.

Question 2

Which of the following best describes the formation of the Ural Mountains of Russia?
 
  A) Marine sediments that had collected in a basin were compressed and uplifted as the former Asian and European plates merged
  B) Marine sediments were sheared along a transform boundary between the Eurasian and African plates
  C) A continental volcanic arc formed as two microcontinents collided and subducted
  D) The landscape was pulled apart by rifting and flood basalts piled up on the landscape



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steff9894

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Answer to Question 1

Answer: C

Answer to Question 2

Answer: A





 

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