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Earth’s magnetic field is thought to result from the dynamo effect, which is   a. motion in the liquid core that generates seismic waves.   b. motion in the liquid core that generates electric currents.   c. thermal cooling in the liquid core that generates temperature gradients.   d. seismic convection in the liquid core that generates liquefaction.

Earth’s magnetic field is thought to result from the dynamo effect, which is   a. motion in the liquid core that generates seismic waves.   b. motion in the liquid core that generates electric currents.   c. thermal cooling in the liquid core that generates temperature gradients.   d. seismic convection in the liquid core that generates liquefaction.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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  1. Earth’s magnetic field is thought to result from the dynamo effect, which is
      a.
    motion in the liquid core that generates seismic waves.
      b.
    motion in the liquid core that generates electric currents.
      c.
    thermal cooling in the liquid core that generates temperature gradients.
      d.
    seismic convection in the liquid core that generates liquefaction.
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