The document describes the six main layers of the Earth from the surface to the core. The layers are the continental crust and oceanic crust on the outside made of different rock types. Below them is the upper mantle that extends 600 km deep containing magma and plates. Next is the lower mantle made of magnesium stretching 1900 km deep. At the center are the outer core of liquid iron and nickel 2260 km wide, and inner core made of solid metal and iron reaching temperatures of 9500 degrees Celsius at its center.