Tectonic plates are found in the Earth's lithosphere, which is the outermost layer of the Earth. The lithosphere comprises the crust and the uppermost portion of the mantle. Tectonic plates are massive slabs of rock that fit together like a jigsaw puzzle, floating on the semi-fluid asthenosphere beneath. Their movements are responsible for various geological phenomena, such as earthquakes, volcanic activity, and the formation of mountain ranges. The interactions between these plates can result in significant environmental changes over time. Understanding tectonic plates is crucial for comprehending the Earth's geological history and predicting future geological events.