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.

Detailed explanation-2: -Below the crust is the mantle, a dense, hot layer of semi-solid rock approximately 2, 900 km thick. The mantle, which contains more iron, magnesium, and calcium than the crust, is hotter and denser because temperature and pressure inside the Earth increase with depth.

Detailed explanation-3: -The Earth’s interior is made of a spherical shells sort of like an onion. The radius of the Earth is 6371 km. It has an average density of 5.5 g/cm3.