Earth may look solid and unchanging—but deep beneath our feet, the surface is constantly shifting. The outer shell of our planet is broken into large “plates” that slowly move, interact, crash, or drift apart. These movements shape continents, build mountains, form oceans, and even trigger earthquakes and volcanoes. In this webquest, you’ll explore how and why plates move — focusing on types of plate boundaries, seafloor spreading, and subduction zones. By the end, you’ll have a stronger underst