1. Inner Core: A solid ball of mostly iron and nickel, incredibly hot (around 5,200°C / 9,392°F).
2. Outer Core: A liquid layer of iron and nickel, also very hot. The movement of this liquid generates Earth's magnetic field.
3. Lower Mantle: The thickest layer, mostly solid rock but can flow over very long periods of time.
4. Upper Mantle: This layer includes the Asthenosphere, a partially molten layer that is very important for plate tectonics. The upper part of the upper mantle is rigid and is part of the Lithosphere.
5. Crust: The thin, outermost layer of the Earth. It's the part we live on and is divided into the oceanic crust (thinner, denser) and the continental crust (thicker, less dense).
Let me know if you'd like more details about any of these layers!
