1) Plates come together due to convection currents in the mantle
2) One is oceanic crust, one is continental crust
3) The oceanic crust sinks below the continental crust because it is denser and heavier- SUBDUCTION
4) Great pressure is exerted as it is forced down into the mantle- EARTHQUAKES
5) The friction and heat from the mantle causes the oceanic crust to be destroyed (MELTS) into magma
6) The large volume of magma now in the magma chamber causes hot magma to rise to the surface- COMPOSITE VOLCANO
Forms OCEANIC TRENCHES, COMPOSITE VOLCANOES AND EARTHQUAKES
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