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True
Oceanic crust is more dense than continental crust
False
Oceanic crust is less dense than continental crust
Oceanic-Oceanic
Older/more dense crust subducts under less dense crust eventually melting
Oceanic-Oceanic
Forms island volcanoes
Oceanic-Oceanic
Example: Aleutian Islands
Oceanic-Continental
Oceanic crust subducts under continental crust, melts then rises to the surface
Oceanic-Continental
Forms volcanic mountain ranges
Oceanic-Continental
Example: Mt St. Helen
Continental-Continental
Low density crusts force each other up
Continental-Continental
Forms large mountain ranges
Continental-Continental
Example: Appalachian Mountains and Himalayan Mountain