Convergent Boundaries: At convergent boundaries, one tectonic plate moves under another in a process called subduction, which can create mountains and sometimes volcanoes.
Divergent Boundaries: At divergent boundaries, tectonic plates pull apart, allowing magma to rise from below the Earth's surface, which can create new ocean floor.
Transform Boundaries: At transform boundaries, tectonic plates slide past each other, causing earthquakes and forming features like fault lines.