As the Earth layers began to emerge, _____ materials like iron and nickel traveled to the core while ____ materials like aluminum and silicon remained at the surface.

Question

As the Earth layers began to emerge, _____ materials like iron and nickel traveled to the core while ____ materials like aluminum and silicon remained at the surface.
A.
lighter / heavier
B.
heavier / lighter

GPT-4o mini · Answer

The correct answer is B. heavier / lighter.

As the Earth formed, heavier materials like iron and nickel sank towards the core, while lighter materials like aluminum and silicon remained at the surface.