You can make a simple compass at home. First, rub the sharp end of a sewing needle many times on one end of a bar magnet. Then, rub the eye of the needle on the other end of the magnet. Thread the needle through a circle of wax paper, then float the wax paper and needle in a bowl of water.

1. Describe the data that the investigation above will produce if it is conducted as described. Then, evaluate the experimental design as a means to demonstrate the force exerted by Earth’s magnetic field on a compass.