Layers of the Earth

The earth have four layers: the crust, mental, inner core, and outer core. The lithosphere (when divided into parts called plates) is the crust and the upper part of the mental. the lithosphere is about 5 to 30 miles deep, the mental is about 1800 miles thick, the outer core is about 1300 miles thick and the inner core is about 800 miles to the center of the earth.