HELP! * GREY=local LOCAL HTML version of Foils prepared April 2,96

Foil 24 Wegener's theory

From Teaching Science to the 21st Century Student Presentation of G. Vidali Colgate University -- March 96. by Gianfranco Vidali * See also color IMAGE
Before Wegener:
  • hot Earth is continuously contracting: light elements float on top of heavy ones; mountains are wrinkles in this contraction
  • well accepted theory
Alfred Wegener: meteorologist

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