6 Convergent- Ocean-Ocean When two ocean plates meetAs the denser plate slides underneath the other, the plate melts to magma and risesMagma reaches ocean floor and slowly rises to form volcanic island arcsEarthquakes can occurExample: Ring of Fire
8 Convergent – Ocean-Continent When an ocean plates slides under a continent plateForms volcanoes and earthquakes like an ocean-ocean boundaryExamples: Western South America (Andes), Mt. St. Helens, Washington
10 Convergent Continent-Continent Occurs when two continent plates meetSince similar densities, they do not slide easily underneath in to mantleThe force of the collision pushes up mountainsEarthquakes are commonExample: The Himalayas
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