* Subduction Zone: The area where the denser plate sinks beneath the less dense plate.
* Trench: A deep, narrow depression in the ocean floor at the point where the plates meet.
* Volcanic Arc: A chain of volcanoes that form on the overriding plate, often parallel to the trench. These volcanoes are formed by magma rising from the subducting plate, which melts due to the heat and pressure.
* Earthquakes: The movement of the plates along the subduction zone causes earthquakes, sometimes very powerful ones.
* Island Arcs: In some cases, the volcanoes of the volcanic arc emerge above sea level, forming chains of islands.
Here's a simple analogy: Imagine pushing a rug under a piece of furniture. The rug (oceanic plate) is forced beneath the furniture (continental plate).
The subduction process is a key driver of plate tectonics, shaping the Earth's surface and influencing many geological phenomena.