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Once a Terrestrial Planet Had Formed from a Large Number

Question 88

Multiple Choice

Once a terrestrial planet had formed from a large number of planetesimals, heat could have melted it and allowed it to differentiate into a metallic core of ____________density and a rocky mantle or crust of ____________ density.


A) higher; lower
B) lower; higher
C) Wrong! The interior stays solid.
D) Wrong! There is no separation according to density.

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