Tuesday, May 12, 2009

Why Does a Compass Point North?


The inside of the earth acts like a strong magnet. One end of the magnet is near the North Pole. The other end is near the South Pole. A compass has a needle that's a magnet. The earth's magnet attracts the needle so it always points north and south. The entire earth acts like a big magnet. The North Pole acts as the S pole and the South Pole as the N pole. A compass needle points to the north because it is the N pole of the compass and is attracted by the S pole of the earth. This does not mean that there is actually a magnet as such inside the earth. Rather, an electric current in the earth generates a magnetic field. If we hold a compass when we are near the North Pole, the N needle of the compass will try to point straight to the ground.

8 comments:

  1. Wow! This is so cool! I am looking for stuff for my school project and this helped allot!

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  2. you guys are the best! you helped me a lot with my school project too.

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  3. why does the compass needle point north and south at the same time

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  4. It don't point north and south at the same time

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  5. hi adam oh good answer

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  6. That is so cool it helped me alot with my science homework!

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