Concepts

The magnetic properties of a lodestone (a natural, permanent magnet)

Overview

The magnetic properties of a lodestone are demonstrated using a bar magnet, a compass, and a sewing needle.

Details

Equipment

• [1] Lodestone
• [1] Bar magnet
• [1] Compass
• [1] Sewing needle
• [1] Thread
• [1] Tape
• [1] Overhead projector

Script

1. Attach the lodestone to the overhead projector with string and tape so that it hangs freely.
2. Hold the bar magnet near the lodestone. Note the movement of the lodestone.
3. Remove the lodestone from the overhead projector.
4. Place the compass on the overhead projector.
5. Hold the lodestone near the compass. Note the movement of the compass needle.
6. Place the sewing needle on the overhead projector.
7. Pick up the sewing needle with the lodestone.

Additional Resources