Across
- 1. The smallest unit of matter.
- 4. Magnets are made of these materials.
- 7. These magnets have magnetic properties all the time.
- 10. The movement of electrons from the sky to the ground.
- 13. The bigger a magnet, the ____ the field.
- 14. The invisible field of magnetism a magnet creates.
- 17. Electricity used for power, caused by the flow of electrons.
- 18. These particles have a positive charge.
- 19. When magnets push apart.
- 20. The force created by both electricity and magnetism.
- 21. You can create a simple electromagnet with this, a nail, and a battery.
Down
- 2. The force that a magnet exerts on certain materials.
- 3. A type of ferromagnetic material.
- 5. These particles have a negative charge.
- 6. This is made of an energy source, a path for electricity to flow on, and a device that converts the energy.
- 8. A material that attracts magnets.
- 9. When magnets pull together.
- 11. These particles have a neutral charge.
- 12. These machines use magnetic fields to take pictures of the body.
- 15. The force between two electrically charged objects.
- 16. These types of trains use electromagnets.