PRESENTATION OUTLINE
Asthenosphere
Plastic like layer below the lithosphere.
Continental Drift
Idea that continents move slowly across earths surface.
Pangaea
Large ancient landmass that consisted of all the continents on earth.
Lithosphere
Composed of oceanic or continental crust and upper mantle.
Plate Tectonics
Explains locations of mountains, trenches, and volcanoes.
Seafloor Spreading
Theory proposed by Harry Hess that includes processes along mid-ocean ridges.
