<P> Earth 's magnetic field , also known as the geomagnetic field , is the magnetic field that extends from the Earth 's interior out into space , where it meets the solar wind , a stream of charged particles emanating from the Sun . Its magnitude at the Earth 's surface ranges from 25 to 65 microteslas ( 0.25 to 0.65 gauss ) . Roughly speaking it is the field of a magnetic dipole currently tilted at an angle of about 11 degrees with respect to Earth 's rotational axis , as if there were a bar magnet placed at that angle at the center of the Earth . The North geomagnetic pole , located near Greenland in the northern hemisphere , is actually the south pole of the Earth 's magnetic field , and the South geomagnetic pole is the north pole . Unlike a bar magnet , Earth 's magnetic field changes over time because it is generated by a geodynamo ( in Earth 's case , the motion of molten iron alloys in its outer core ) . </P>
<P> Earth 's magnetic field , also known as the geomagnetic field , is the magnetic field that extends from the Earth 's interior out into space , where it meets the solar wind , a stream of charged particles emanating from the Sun . Its magnitude at the Earth 's surface ranges from 25 to 65 microteslas ( 0.25 to 0.65 gauss ) . Roughly speaking it is the field of a magnetic dipole currently tilted at an angle of about 11 degrees with respect to Earth 's rotational axis , as if there were a bar magnet placed at that angle at the center of the Earth . The North geomagnetic pole , located near Greenland in the northern hemisphere , is actually the south pole of the Earth 's magnetic field , and the South geomagnetic pole is the north pole . Unlike a bar magnet , Earth 's magnetic field changes over time because it is generated by a geodynamo ( in Earth 's case , the motion of molten iron alloys in its outer core ) . </P>
where does the earth 's magnetic field originate
where does the earth 's magnetic field originate
Earth 's interior
Earth 's interior