Tectonic Plate Theory

The Tectonic Plate Theory explains that Earth's outer layer, called the lithosphere, is divided into large, rigid pieces known as tectonic plates. These plates are constantly moving on the semi-fluid, underlying layer called the asthenosphere. Their movements cause many geological activities like earthquakes, volcanic eruptions, and mountain formation. Plates can diverge (move apart), converge (move together), or slide past each other, shaping the Earth's surface over millions of years. This theory helps us understand the dynamic nature of our planet's crust and the relationships between continents and ocean basins.