Differentiation

How did Earth differentiate into layers?

Earth began to cool and separate into layers, with the most dense material sinking to the bottom due to gravity (inner core), and the least dense material rising to the top (crust)

How did our solar system differentiate?

A solar nebula began swirling around a heavy center of matter, forming the sun, and collisions of rock (due to gravity) eventually formed planets

What is the LEAST DENSE and COOLEST layer of Earth?

crust

EARTH was likely first formed by a bunch of colliding asteroids. What force created these collisions?

gravity

What is the MOST DENSE and HOTTEST layer of Earth?

inner core

What is the order of Earth's layers, from the center to the outermost layer?

inner core, outer core, mantle, crust

What is the process inside the core that heats up Earth's layers today?

radioactive decay