While it's true that the Earth has a solid, rocky core, it's also made up of:
* Mantle: A thick layer of mostly solid rock, but also contains molten rock (magma).
* Crust: The outermost layer, thin and made of solid rock. This is what we live on.
* Outer Core: A liquid layer made mostly of iron and nickel.
* Inner Core: A solid ball of iron and nickel, incredibly hot and under immense pressure.
So, while the Earth has a lot of rock, it's not just one big solid piece. It's a dynamic system with many different components!
