Restless earth

Evidence for Continental Drift and Plate Tectonics

  • Alfred Wegener proposed the idea but his theory of the continents slowly drifting was widely regarded as false until rougly half a century later, primarily because it couldn't be explained how they were drifting (today, we know that it's convection currents.

Continental Fit

  • Fit of the continents into one another can provide evidence (definition).
  • Coastlines are continuously shaped by erosion and deposition.
  • Ancient continental shield areas in Africa and South America match up when placed together.
  • Today's continents can be fitted together to reconstruct the supercontinent Pangea.
  • A good example of 'continental fit' is shown by the similarities in shape of the coastlines…

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