Plate Tectonics is a theory explaining how Earth’s crust is broken into big pieces called plates. These plates float on the soft mantle and move slowly. The movement causes earthquakes, volcanoes, and the formation of mountains. It helps explain why continents drift and change over time.In the plate tectonics theory, there are three main plate boundaries determining the type of formation that will be formed after a significant movement.Convergent (collide – causes mountains or volcanoes)Divergent (separate – forms new crust like mid-ocean ridges)Transform (slide past – causes earthquakes like San Andreas Fault)