Convergent Boundary = Subduction Zone

Oceanic-Oceanic

one ocean plate goes under another. This causes magma to rise and create volcanoes in the ocean, forming island arcs and offshore trenches

Oceanic-Continental

the denser ocean plate goes under the continental plate and melts into magma. This magma rises to the surface, creating coastal mountains (like the Andes), land volcanoes, trenches, and can even lead to tsunamis

Continental-Continental

when two continental plates collide, one goes underneath the other. This pushes the surface up and creates mountains, like the Himalayas

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