Question

Why is the oceanic crust more dense than the continental crust?

A. It’s made of iron and magnesium
B.its made of iron and nickel
C.Its made of iron and lead
D. It’s made of iron and silicone

Answer 1

Answer: A It's made of iron and magnesium

Explanation: Oceanic crust is denser because it generally melts to a higher fraction than continental crust. When rocks melt some minerals melt before others. Generally lighter minerals melt before denser ones.

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