Question

Earth's layers formed as result of differentiation which occurred in the early stages of the planet's formation. About 4.6 billion years ago, the Earth began as a ball of molten rock and metal. As this ball cooled, the heavier elements sank towards the center, while lighter elements rose towards the surface.We would predict that the elements forming the core, like iron and nickel, to be -
Responses

A more dense.more dense.

B least dense.least dense.

C light weight.light weight.

D first crystallized

Answer 1

The correct response would be:

**A. more dense.**

This is because the elements that make up the Earth's core, like iron and nickel, are indeed more dense than the lighter elements that make up the Earth's crust and mantle. During the differentiation process, these heavier elements sank to the center of the Earth, forming the core.