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Transcript
The Earth’
’s Magnetic Field
Curved field lines cause a magnetic needle to tilt.
  Angle between magnetic field line and surface of the
Earth is called inclination. It depends on:
 
  Latitude
Fig. 2.4d
Essentials of Geology, 4th edition, by Stephen Marshak
© 2013, W. W. Norton Chapter 2: The Way the Earth Works: Plate Tectonics