Question

_______ is the process in planetary formation when heavy materials sink toward the planet's center and lighter materials accumulate near its surface. 

A. OrogenyB. SuperpositionC. RatificationD. Differentiation

Answer 1

The correct answer is letter D. Differentiation is a process where different layers of a planetary body are separated into layers. This occurs in the development of protoplanets. With heavy materials sinking toward the planet's center, it creates a dense core with lighter elements toward the surface. This supports why iron is concentrated in the core.