Did you know that the Earth's oceans and continents were formed billions of years ago through the process of plate tectonics? This fascinating geological theory explains how the Earth's outer shell, or lithosphere, is divided into several large plates that are constantly moving and interacting with each other. When two tectonic plates collide, one plate may be forced beneath the other in a process known as subduction. This can create deep ocean trenches and volcanic mountain ranges. On the other hand, when two plates move apart, new oceanic crust is formed through volcanic activity at mid-ocean ridges. Continental drift is another important aspect of plate tectonics, which explains how the Earth's continents have shifted positions over millions of years. This movement has led to the formation of supercontinents, such as Pangaea, which eventually broke apart to form the continents we see today. In conclusion, the formation of oceans and continents is a dynamic and ongoing process driven by the movement of tectonic plates. Studying plate tectonics helps us understand the Earth's ever-changing landscape and the forces that shape our planet.