Across
- 4. Electromagnetic ___ is the process by which an electric current is produced by a changing magnetic field
- 10. Region around a magnet in which the magnetic forces can act
- 12. Magnet produced by an electric current
- 14. Device that uses electromagnet induction to convert kinetic energy into electrical energy
- 15. Device used to measure current through the interaction of an electromagnet and a permanent magnet
- 19. Force of repulsion or attraction between the poles of magnets
- 20. Any material that attracts iron or materials containing iron
- 21. Used in combination with an armature to reverse direction of electric current
- 22. A compass needle points ___ because its north pole is attracted to a very large magnetic south pole.
- 23. Parts of a magnet where the magnetic effects are strongest
Down
- 1. Increases or decreases the voltage of an alternating current
- 2. Interaction between electricity and magnetism
- 3. ___magnets are difficult to magnetize but tend to retain their magnetic properties better
- 5. Loop of wire that can rotate mounted between the poles of a permanent magnet or electromagnet
- 6. Strong permanent metals are made with this alloy of aluminum, nickel, and cobalt
- 7. Solenoid wrapped around an iron core
- 8. Magnet made with metals such as iron, nickel, cobalt or alloys of these metals
- 9. Device that changes electrical energy into kinetic energy
- 11. ___ trains use an electromagnet to levitate
- 13. ___ magnets are made from materials that are easy to magnetize but lose their magnetization easily
- 16. Curtain of light caused by Earth's magnetic field
- 17. Coil of wire that produces a magnetic field when carrying an electric current
- 18. Atoms group together in ___ so that north and south poles line up to create a strong magnetic field