Convergent Boundaries:
Convergent boundaries can happen in three ways:
Continent to continent, oceanic to oceanic, continent to oceanic which is called subduction zones. Crust is destroyed and goes back into the earth to be recycled.
Continent to continent, oceanic to oceanic, continent to oceanic which is called subduction zones. Crust is destroyed and goes back into the earth to be recycled.
The oceanic plate goes underneath the continental plate which causes the continental plate to go up, creating a mountain range. The oceanic plate sinks into the subduction trench and breaks into smaller pieces. They stay dormant for long periods of time before moving suddenly generating large earthquakes.
When the two continents meet up, they don't subduct because they have the same weight.This results in them either being pushed up or sideways. An example of this is the Himalayas, which was caused by the Eurasian plate crumbling up and overriding the Indian plate.
When this convergence happens, one of the oceanic plates is sub ducted under the other one resulting in a deep oceanic trench. An example of this is the Marianas Trench which was created as the result of the Philippine Plate sub ducting under the Pacific Plate. Oceanic-oceanic plate convergence also causes undersea volcanoes. The erupted lava and volcanic debris pile up on the ocean floor which results in a submarine volcano. This volcano rises above sea level and forms an island volcano. They are usually in chains and are called island arcs.