Plate tectonics

Plate tectonics is a scientific theory that explains how parts of the Earth's surface move around. Our Earth is made up of large pieces of rock called plates. The plates are constantly moving, scraping against each other, and sometimes even slipping under one another. Plate tectonics also explains how earthquakes and volcanoes happen. When the plates move around, they sometimes rub against each other and create vibrations that we feel as earthquakes. When two plates move apart, a gap forms in between them, and molten rock (called lava) can fill that gap and create volcanoes.