Answer:A plate boundary is where two tectonic plates meet. These areas are active and can cause earthquakes, volcanoes, or mountain formation.Three types of plate boundaries:1. Convergent boundary – Plates move toward each other. It forms mountains or volcanoes.2. Divergent boundary – Plates move apart. It creates new crust like mid-ocean ridges.3. Transform boundary – Plates slide past each other. It causes earthquakes.