Did you know that the ground beneath our feet is constantly moving? We may not feel it often but, we know it is happening. It’s the earth’s crust that moves. Our planet’s outer shell is not one piece, instead made of individual puzzle pieces, called plates. All of Earth’s land and water sit on these plates We do not feel the continents movement because they are moving at very slow rate, almost similar to the growth of our fingernails. As the plates move, they interact at their boundaries in different ways. This interaction of tectonic plates is responsible for many different geological formations such as the Himalayan Mountain range in Asia, the East African Rift, and the San Andreas Fault in California, United States.
Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements. It has revolutionized the way we view large features on the surface of the Earth. In this module, we will learn how the theory of plate tectonics revolutionized the earth sciences by explaining the movement of geologic plates causing mountain building, volcanoes, and earthquakes.