Learn more physics!
When you tie a magnet with the styrofoam, and put it on a tub of water and let it move freely,why does it show the north and south directions?
- Ng Hui Ching (age 11)
Tampines North Primary School, Singapore
When you make a magnet float like this, you're actually building something called a 'compass'. To learn how compasses work, you can check out the answer to the question titled The Compass Points North
(republished on 07/22/06)
Follow-up on this answer.