MAGNETIC REVERSAL

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Created by
vonn

Cards (8)

  • Magnetic reversal is also called "magnetic flip" of the earth.
  • Magnetic reversal happens when the North Pole is transformed into a South Pole and the South pole becomes north pole.
  • Magnetic reversal is due to the change in the direction of flow in outer core.
  • Magnetic compass tells us the directions on earth. It also proves that the earth has a magnetic field.
  • The earth's magnetic field is generated in the very hot molten outer core.
  • The earth's magnetic field is a dipole (north and south poles)
  • The occurrence of magnetic reversal can be explained through the magnetic patterns in magnetic rocks when magnetic reversals occur. there is also a change in the polarity of rocks.
  • Over the last 10 million years, there has been an average of 4 to 5 reversals per million years.