Across
- 2. To pull together - When opposite poles are put near each other, attraction occurs.
- 5. A substance, like copper, that easily carries and electric current. When electricity runs through a conductor, a magnetic field is created.
- 6. The combined effects of electricity and magnetism.
- 7. The rate at which energy is transferred.
- 8. a device for increasing or decreasing voltage through electromagnetic induction
- 10. A natural force of attraction or repulsion of magnetic materials, caused by the lining up of their atoms.
- 11. Magnet A substance with magnetic domains that are always lined up and therefore always has magnetic properties; Permanent magnets always have a magnetic field surrounding them.
- 14. A term used to describe materials that are strongly attracted by magnetic force; A term used to describe objects with magnetic qualities often due to their iron content. Common ferromagnetic metals include iron, nickel, and steel.
- 16. Domain A group of atoms in a material that behaves like a small magnet. In a substance that is not magnetized, domains are pointed in random ways. In magnets, all domains are lined up in the same direction.
- 19. Materials that are weakly attracted to a magnetic force. This attractive force is approximately a million times weaker than the force attracting ferromagnetic metals. Common paramagnetic metals include copper and aluminum.
- 20. The flow of charged particles from atoms.
- 21. Diamagnetic materials work very differently from ferromagnetic and paramagnetic metals, as they respond to magnets in an opposite way. Common diamagnetic materials include gold, silver, and lead.
Down
- 1. A sensitive current-indicating instrument.
- 3. To push away - When two similar magnetic poles are near each other, they repel one another.
- 4. The opposite ends of a magnet; The poles are the strongest areas of the magnet.
- 9. A current carrying coil of wire.
- 10. Field The space around a magnet, in which magnetic force is exerted.
- 12. Magnets A substance with magnetic domains that line up and become magnetized for a short period of time after being held in a magnetic field.
- 13. A machine that produces electric current by rotating a coil within a stationary magnetic field.
- 15. An object that attracts iron and other magnetized objects; Something that can attract iron and has an invisible magnetic field around it.
- 17. Induction: Inducing voltage by changing the magnetic field around a conductor.
- 18. Law The induced voltage in a coil is proportional to the product of the number of loops, the cross-sectional area of each loop, and the rate at which the magnetic field changes within those loops.