Here's a breakdown:
* Crust: The outermost layer of Earth, composed of solid rock. It's divided into oceanic crust (thinner and denser) and continental crust (thicker and less dense).
* Mantle: The thick layer below the crust, mostly composed of solid rock but capable of flowing very slowly over geological timescales.
* Lithosphere: The rigid outermost layer of Earth, consisting of the crust and the uppermost part of the mantle. It's broken into pieces called tectonic plates.
The lithosphere is what moves, and the movement of these plates causes earthquakes, volcanoes, and the formation of mountain ranges.
