SOLAR SYSTEM

Detailed explanation-1: -Earth’s interior layers are ordered by density. The densest layer is the solid metal inner core, the mantle is of intermediate density, and the least dense layer is the lithosphere, particularly the continental lithosphere. The origin of these layers and how scientists know about them is fascinating.

Detailed explanation-2: -The separation of Earth into layers based on density is known as differentiation. The densest material moved to the center to create the planet’s dense metallic core.