The three layers of the Earth are, the crust, the mantle and the core.

(i) Crust: The crust is the outer layer of the earth. It is the solid rock layer upon which we live.

(ii) Mantle: The mantle is made up of semi-molten rock called magma.

(iii) Core: Core is in the center and is the hottest part of the Earth. It is basically like the engine of Earth.