• Magnetite is a magnetic mineral found in lava.
  • The magnetite points to the magnetic north pole when it cools.
  • Scientists used magnetometers to show where the north magnetic pole had been when magnetite crystals cooled.
  • The magnetic pole seemed to have moved, but had not.
  • The simplest explanation is that the continents have moved.
  • Apparent polar wander is another line of evidence for drifting continents.
  • The two paths merge into one if the continents are allowed to drift.
  • If the continents were always in their current locations, the poles would remain the same.
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