Video: The inner core is made mostly of The outer core is made up of • The mantle is made of two parts, the The Earth's top layers "float" on top of the The ● There is The crust is broken into huge rocks call Scientists studied and is the top layer and part of the Lithosphere. and the called The tectonic plate movement called land and ocean volcanoes, and ridges. • The borders between plates are known as Movements at the faults cause pressure. to provide evidence for the super continent :Such as mountains,​