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Earth's Magnetic Field

  1. Apr 19, 2007 #1
    My name is Jarrad Page and I am a physics student in year 12 this year. I am currently studying the Earth's magnetic field and the effects it has on the Earth, however I have been left in the dark with this topic. I was wondering if you could give me a clear and somewhat detailled explanation on the following.

    What causes the Earth's magnetic field?
    Is it constant? Why or Why not?
    What changes have occoured to the field in the past?
    How is the Earth's magnetosphere affected by the sun?

    This would really help me out alot and I would be very grateful if you could do this for me.

    Yours Truly,

    Jarrad Page
  2. jcsd
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