Earth's innermost core is solid, not liquid, because
A) the core temperature is too low to melt iron.
B) differentiation caused all of the heavy, solid material to sink to the bottom while Earth was forming.
C) all the liquid has moved up into the mantle via convection.
D) the pressure is too high for the material to be in a liquid state.
E) iron does not melt.

Question

Quizplus · Accepted Answer

The pressure in Earth's innermost core is extremely high, which keeps the iron and nickel in a solid state despite the high temperatures.

Earth's Innermost Core Is Solid, Not Liquid, Because