1
the boundary between two plates that move toward each other
2
the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
3
the boundary between two plates that slide past each other
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the boundary between two plates that move away from each other
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Wegener's hypothesis that all continents were once connected in a single large landmass that broke apart about 200 million years ago and drifted slowly to their current positions
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theory that Earth's surface is broken into larger, rigid pieces that move with respect to each other
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long, narrow mountain range on the ocean floor; formed by magma at divergent plate boundaries
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a curved line of volcanoes that forms parallel to a plate boundary
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a deep, underwater trough created by one plate subducting under another plate at a convergent plate boundary
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the process that occurs when one tectonic plate moves under another tectonic plate
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name given to a supercontinent that began to break apart approximately 200 million years ago
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a vent in Earth's crust through which molten rock flows
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molten rock stored below Earth's surface
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a crack or a fracture in Earth's lithosphere along which movement occurs
15
magma that erupts onto Earth's surface
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