Term Definition
Continental Drift Is the hypothesis is that the continents once formed a single landmass broke up and drifted to their present location
Pangaea A super continent
Sea floor Spreading The process by which new oceanic lithosphere forms as magma rises toward the surface in solidifies
Plate Tectonics The theory that the Eartha??s lithosphere is divided into Tectonic plates that move around on top of the asthenosphere.
Convergent Boundary Went to tectonic plates collide boundary between them.
Divergent Boundary Went to take tonic plates slide past each other horizontally the boundary between them.
Transform Boundary. slide past each other horizontally the boundary between them.
Convection currents the changing in density in circular motions that move the tectonic plates.
Wegener Made the theory of continental drift and how the continents were once one super continent Pangea.
Volcano Areas of the eartha??s surface through which magma and volcanic gases passes.
Mid-Ocean Ridges Underwater mountain chains that run through Eartha??s ocean basins.
Hot Spots Volcanically active places on Eartha??s surface that are far from plate boundaries.
Subduction When old ocean crust gets pushed into the asthenosphere, where it is remelted and recycled.
Vent Magma rises from the magma chamber through cracks in the Eartha??s crust to openings.
Plate Techtonics

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