|This lesson was created by Arielle, a student in the UniTY Program at the Miami Museum of Science.|
The Earth is a huge magnet and has magnetic poles. These poles influence the pointer of a compass.
To make your own floating compass, you need the following things:
1. a large sewing needle
2. a cork
3. a sharp knife
4. a permanent magnet
5. a glass or plastic cup full of water
Now, follow these steps:
Cut a circle-shaped piece from the bigger end of the cork.
This piece should be no thicker than 1/4 inch.
Step # 3.
Spin the floating cork gently. When it stops, the needle will point in a North-South direction. Spin it again, and it will come back to the same place!