How did the core and mantle form? What will be an ideal ...

[burton19126]

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

[izzat]

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]

Thanks for the timely response, appreciate it

[anyusername12131]

Great answer, keep it coming