Plate tectonics is the scientific theory that Earth's surface is composed of several rigid plates that fit together like puzzle pieces. These plates are in constant motion over the semi-fluid layer beneath them known as the asthenosphere. The movement of these plates leads to various geological phenomena such as earthquakes, volcanic eruptions, the formation of mountains, and the creation of new ocean basins. The theory of plate tectonics explains the dynamic nature of Earth's crust and provides a framework to understand the geological processes that shape our planet.
