Yes, the Earth is primarily composed of three layers:

• Core: The Earth's innermost layer, mainly composed of iron and nickel. It's divided into a solid inner core and a liquid outer core. Source
• Mantle: The thickest layer surrounding the core, made up of silicate rocks rich in iron and magnesium. It's mostly solid but has regions that can behave like a viscous fluid over long periods. Source
• Crust: The outermost solid layer of the Earth, relatively thin compared to the other layers. It is divided into oceanic crust and continental crust. Source