Term Definition
Continental drift Is the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations.
Pangea When all the present continents were once joined in a single, huge continent/Super continent.
Sea-floor spreading Is the process by which new oceanic lithosphere forms as magma fills in the gap.
Plate tectonics Is the theory that the eartha??s lithosphere is divided into tectonics plates that move around on top of the asthenosphere.
Convergent boundary Whata??s happens at a convergent boundary depends on the kind of crust at the leading edge of each tectonic plate.
Divergent boundary When the tectonic plate separate.
Transform boundary When two tectonic plate slide past each other.
Convection currents Cause two plate to move.
Wegner
Volcano Are areas of eartha??s surface through which magma and volcanic gases pass.
Hot spots Are volcanically active places on the eartha??s surface that are far from plate boundaries.
Mid Ocean ridges
Subduction
Vents
Wegener was a man who wrote hypothesis of continental drift.
A long undersea mountain chain they forms along the sea floor of the major ocean.
When one rock is forced under one another.
Vents are unique because some organism living around the vent do not rely on photosynthesis for energy.
Plate tectonics

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