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Author Question: How did the core and mantle form? What will be an ideal response?[br][br][b][color=green]Question ... (Read 62 times)

burton19126

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on: Jul 16, 2018
How did the core and mantle form?
 
  What will be an ideal response?

Question 2

What did Sir Isaac Newton do during the seventeenth century?
 
  A) calculate that a rotating planet would not be perfectly spherical
  B) determine the mass of Earth
  C) determine that the Earth has a distinct concentration of high-density material near the center
  D) use simple surveying and measurements of shadows in sunlight to estimate Earth's size


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izzat

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: Earth's metallic core separated from the mantle by planetary differentiation in a global magma ocean. Very dense metallic compounds separated from lower-density silicate compounds to produce a metallic core and a silicate mineral mantle. As Earth cooled, crystallization and inward settling of iron metal caused distinction of a solid inner core and a remaining molten outer core. The mantle solidified into silicate minerals with a chemical composition similar to peridotite. Very high temperatures within early Earth resulted from collisions with accreting embryos and higher hear production by radioactive decay.

Answer to Question 2

Answer: A


burton19126

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

kilada

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Reply 3 on: Yesterday
Excellent

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