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Author Question: How do streams erode and deposit material? What will be an ideal ... (Read 56 times)

V@ndy87

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on: Jul 14, 2018
How do streams erode and deposit material?
 
  What will be an ideal response?

Question 2

Rocks of the continental crust are composed mostly of sial, while rocks of the ocean crust are predominately sima. What is the significance of the distinction between these rock types?
 
  What will be an ideal response?


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Jmfn03

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Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: After chemical and mechanical weathering break down rock, water picks it up and carries it away (erosion) in the stream current. When the stream current decreases speed, it can no longer carry the heavier material, so it drops its load (deposition).

Answer to Question 2

Answer: Sial is less dense than sima, and the continents lie at a higher elevation as a result.


V@ndy87

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Reply 2 on: Jul 14, 2018
Gracias!

amcvicar

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Reply 3 on: Yesterday
Excellent

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