Answer / shashank saurabh

Magnetic effect of the earth. The earth behaves as it has got a big magnet, running as mot a big magnet, running almost from its north to south pole inside it (the earth). Its south pole lies towards the geographical north pole and the north pole lies towards the geographical south pole. As a matted of fact, there is no such magnet inside it, but our earth, as a whole, acts as a big magnet, we can prove this fact with the help of the following experiments.

(1) one can magnetise iron –rods by the earth. This is possible only when the earth behaves like magnet or it has got magnetic material (a big magnet) inside it.

(2) when we suspend a magnet. Freely, it always rests in a particular direction almost coinciding with the north and the south direction. It is only possible when we presume that there is magnet inside the earth of which north elope is towards soothe pole of geography and south pole is towards geographical north pole.

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