The crust is what you stand on every day. There are two types oceanic and continental. It is 5 to 50 km thick, and it gets warmer as you go father. The crust is a solid made of oxygen, silicon, and aluminum.
The first layer is the crust. We are on it right now!
This is how we will safely make it to the CENTER OF THE EARTH!
The mantle is really warm. There is also a lot of pressure pushing on you. The mantle is the thickest and the second layer.