Here's why:
* Subduction: When one tectonic plate slides beneath another (the denser plate goes under), it's called subduction. This process melts the descending plate, creating magma.
* Magma Rise: This magma is less dense than the surrounding rock and rises to the surface.
* Volcano Formation: When this magma erupts, it forms volcanoes.
Other features associated with subduction zones:
* Trenches: These deep depressions in the ocean floor mark the point where the plates converge.
* Island Arcs: Chains of volcanic islands often form parallel to trenches.
* Earthquakes: Subduction zones are a major source of earthquakes.
Let me know if you'd like to know more about any of these features!