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Author Question: What is not a factor that separates the asthenosphere and the lower mantle into two distinct layers? ... (Read 82 times)

mckennatimberlake

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on: Aug 22, 2018

What is not a factor that separates the asthenosphere and the lower mantle into two distinct layers?
  a. Temperature
  b. Pressure
  c. Density
  d. Chemical composition



Question 2

Since the Earth has density stratified layers, which layer would be the densest?
  a. The outer core
  b. The mantle
  c. The inner core
  d. The crust



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blakeserpa

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Reply #1 on: Aug 22, 2018
Answer to Question 1

ANS: D
The chemical composition of the two layers is about the same. The temperature in the lower mantle is
higher likely due to the pressure. The increase in temperature makes the lower mantle denser.
Information can be found in the section Voyaging Combined with Science to Advance Ocean Studies.



Answer to Question 2

ANS: C
Earth's densest layers are in the interior. The core substances should be denser than the rocks from the
deep drill holes. Information can be found in the section Earth's Interior Is Layered and Figure 3.5.



mckennatimberlake

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Reply 2 on: Aug 22, 2018
Great answer, keep it coming :)

31809pancho

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Reply 3 on: Yesterday
Excellent

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