Compass Points

　　You will need:

　　·Clear glass filled with water

　　·Quarter-inch (one-half-centimeter ) slice from the end of a cork

　　·Magnet

　　·Needle

　　Here is how:

　　1. Float the cork in the glass of water.

　　2. Magnetize the needle by rubbing it over the magn et in the same direction about 50 times.

　　3. Lay the needle on cork.

　　4. The needle will slowly turn and point in the sam e direction, no mater how many times you point it in an other direction.

　　Why?

　　Once magnetized, the needle lines up with the Earth 's north and south magnetic poles just as a magnetized pointer in a compass would.

　　Art by David Bamundo