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Question
Thu February 07, 2013 By:

PLZ GIVE ME SOME TIPS ABOUT EARTH'S MAGNETIC FIELD TO THE POINT OF VIEW FOR MY VIVA

Fri February 08, 2013
Magnetic field is generated by the rotation of earth's core but it is still a point of discssion by something called a dynamo theory.

It protects earth from intergallactic plasma storms from sun and deflect them to the magnetic poles due to which we see aurora.
It is in the shape of  a bar magnet.
You should know about magnetic inclination, dip and deviation.
also its usual value at equator.
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