* Crust: This is the outermost layer, the one we live on. It's relatively thin compared to other layers, and it's made of various types of rocks, including igneous, sedimentary, and metamorphic rocks.
* Mantle: This is the thickest layer, located beneath the crust. It's primarily made of solid rock, but it behaves like a very viscous fluid over long periods due to the intense heat and pressure. The mantle is mostly composed of silicate minerals.
While the Earth's core is made of metals, it's not considered rock in the traditional sense.
