Earth recycles its skin
Tectonic plates drift, collide, and tear apart. This motion forges mountains, volcanoes, and earthquakes.Earth: The Plate Tectonics Time Machine
How the conveyor works
At mid‑ocean ridges, new crust rises; at trenches, old seafloor dives back into the mantle. Plates slide on a softer asthenosphere below.Earth: The Plate Tectonics Time Machine
