science

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Across
  1. 2. To pull together - When opposite poles are put near each other, attraction occurs.
  2. 5. A substance, like copper, that easily carries and electric current. When electricity runs through a conductor, a magnetic field is created.
  3. 6. The combined effects of electricity and magnetism.
  4. 7. The rate at which energy is transferred.
  5. 8. a device for increasing or decreasing voltage through electromagnetic induction
  6. 10. A natural force of attraction or repulsion of magnetic materials, caused by the lining up of their atoms.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 20. The flow of charged particles from atoms.
  12. 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. 1. A sensitive current-indicating instrument.
  2. 3. To push away - When two similar magnetic poles are near each other, they repel one another.
  3. 4. The opposite ends of a magnet; The poles are the strongest areas of the magnet.
  4. 9. A current carrying coil of wire.
  5. 10. Field The space around a magnet, in which magnetic force is exerted.
  6. 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.
  7. 13. A machine that produces electric current by rotating a coil within a stationary magnetic field.
  8. 15. An object that attracts iron and other magnetized objects; Something that can attract iron and has an invisible magnetic field around it.
  9. 17. Induction: Inducing voltage by changing the magnetic field around a conductor.
  10. 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.