Evidence for Continental Drift and Plate Tectonics

  • Created by: Tasmin
  • Created on: 10-02-20 15:12

Hazard = occur when and where human and physical systems meet

Basic Structure of the Earth

Mohorovicic Discontinuity marks the Mantle-Crust boundary (continental crust 35km below, oceanic crust 10-15km below surface

lithosphere and crust make up oceanic and continental crusts

The mantle has two layers: the asthenosphere and the lithosphere


  • rigid layer between crust and asthenosphere
  • varies in thickness
  • bourdary with asthenosphere


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