PLATE TECTONICS EVIDENCE

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Presentation transcript:

PLATE TECTONICS EVIDENCE SCIENTIST THEORY EVIDENCE TECHNOLOGY ALFRED WEGENER Continental Drift: continents floated around randomly -Fossils -Shapes of continents -Rocks and Glacier debris Rock hammer Microscope HARRY HESS, MARIE THARP, BRUCE HEEZEN, ROBERT DIETZ Sea Floor Spreading: New sea floor forms at mid ocean ridges -Age of Rocks on Sea-Floor -SONAR -Radiometric age techniques Various Scientists Plate Tectonics -Glacial Debris -Location of Earthquakes and Volcanoes -Rocks -Direct Motion -Satellites -GPS -seismometers -submersibles Summary: How plate tectonic theory was dependent on technology.