Term Definition
Continental drift Continental drift is the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations.
Pangea Pangea is the theory that the continent we know today were all one big continent
Sea floor spreading Sea floor spreading is the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
Plate tectonics Plate tectonics is the theory that explains how large pieces of the earths outer most layer, move and change shape
Convergent boundary Convergent boundary is the boundary formed by the collision of two lithospheric plates
Divergent boundary Divergent boundary is the boundary between two tectonic plates that are moving away from each other
Transform boundary Transform boundary is the boundary between tectonic plate sliding past each other horizontally
Convection currents Convections currents are the movement of matter due to differences in density;the transfer of energy due to the movement of matter
Wegener Wegener was the scientist that came up with the theory of Pangea and continental drift
Volcano Volcano is an area of Earths surface through which magma and volcanic gasses pass
Hot spots Hot spots are volcanically active areas of earths surface far from a tectonic plate boundary
Mid-ocean ridges Mid-ocean ridges are a long undersea mountain chain that forms along the floor of the major oceans
Subduction Subduction is when two oceanic plates converge, one is forced under the other
Vent A vent is an opening at the surface of earth through which volcanic material passes
Plate tectonics

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