* The Crust: The outermost layer of Earth, composed of rock, soil, and sediment. It's the part we live on and interact with directly.
* The Mantle: A thick layer of hot, dense rock that lies beneath the crust. It's mostly solid, but behaves like a viscous fluid over long periods, allowing for tectonic plate movement.
* The Outer Core: A liquid layer composed mostly of iron and nickel. It's responsible for generating Earth's magnetic field.
* The Inner Core: A solid ball of iron and nickel at the center of Earth. It's incredibly hot and under immense pressure.
In short, the geosphere includes all the rocks, minerals, and the molten material deep within Earth. It does not include the atmosphere, hydrosphere (water), or biosphere (living organisms).
