How does the age of the sea floor show that the tectonic plates move?

The age of the sea floor provides evidence for tectonic plate movement through the process of seafloor spreading. As magma rises at mid-ocean ridges, it cools and solidifies to form new oceanic crust, which is youngest at the ridge and gets progressively older as you move away. By dating the rock samples, scientists can map the age of the sea floor and observe how older crust is pushed away from the ridge, demonstrating the movement of tectonic plates. This pattern supports the theory of plate tectonics, illustrating how plates diverge, converge, and interact over geological time.