Final answer:
The theory of plate tectonics suggests that the Earth's lithosphere is divided into large plates that move relative to each other, leading to various geological phenomena.
Step-by-step explanation:
The basic idea of plate tectonics is that the Earth's surface is divided into a few large plates that move slowly relative to one another. This theory helps explain various natural geological phenomena such as earthquakes, volcanoes, and mountain building. The Earth's lithosphere is divided into seven major and several minor plates. These plates float and move over the relatively plastic asthenosphere, causing them to interact with each other in three main ways: converging, diverging, and transform faulting.
Learn more about Plate Tectonics