| A | B |
|---|
| Compass | tool that uses Earth's magnetic field to indicate direction |
| Magnetic Field | area of force around a magnet |
| Diaphragm | Vibrates to create sound |
| Transformer | increases or decreases voltage in a circuit |
| Permanent Magnet | always has magnetic force |
| Magnetic Poles | Ends of a magnet, labeled N and S |
| Electromagnet | Coil of wire that creates a magnetic field when energized |
| Attract | PULL toward one another |
| Repel | PUSH away from one another |
| Magnetism | force that causes tiny metal particles to align |
| Magnetite | Natural magnet containing iron |
| Loudspeaker | Changes electrical energy to sound energy |
| Microphone | Converts sound energy to electrical energy |
