How can you see plates have actually moved or are moving across the outside of the planet?

The movement of tectonic plates can be observed through various geological features and phenomena, such as the formation of mountains, ocean trenches, and earthquakes. For instance, the alignment of mountain ranges often indicates the collision of plates, while the presence of mid-ocean ridges suggests seafloor spreading. Additionally, satellite technology allows scientists to measure the precise movements of the Earth's surface, confirming that these plates are indeed shifting over time.