Physical Science, Chapter 20 (Part 1)

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Across
  1. 1. Heating a magnet over a flame will most likely _______________ its magnetic field. (p. 474)
  2. 4. A _________________ can induce an electric current in a nearby, unconnected solenoid. (pp. 481-82)
  3. 6. A generator requires rotation in order to function because the constantly changing orientation of the magnetic field and the wire coil induces _______________ (p. 480)
  4. 8. A strong magnet's domains will be aligned in the same _______________. (p. 474)
  5. 10. A group of atoms whose magnetic fields are aligned is called a magnetic ______________ (p. 474)
  6. 12. The magnetic pole labeled B in the figure at right is a ____________ Pole. (p. 473)
  7. 13. Flowing current in a wire always produces a magnetic _____________. (p. 476)
  8. 16. Materials whose domains align themselves spontaneously in the presence of a magnetic field display ______________________ (p.474)
  9. 17. Magnetic field forces ________________ point toward a south magnetic pole. (p. 473)
  10. 18. A bar magnet induces an electrical current in a coil of wire whenever the bar magnet is moving _______________ the coil. (p. 477)
Down
  1. 2. Maglev trains, MRI machines, and particle accelerators example of _______________________ in use. (pp. 478-79)
  2. 3. A step-up transformer produces a higher output _______________ (p. 482)
  3. 4. A transformer with an input coil of 100 wraps and an output coil of 50 wraps is a ________________ transformer? (p. 482)
  4. 5. The difference in direction between the magnetic North Pole and geographic North Pole at a given location is called magnetic ________________ (p. 473)
  5. 7. On the basis of the magnetic field surrounding the wire in the figure at right, the conventional current is flowing _______________ (p. 476)
  6. 9. Electrical ________________ convert electrical energy into rotary mechanical motion. (p. 481)
  7. 11. The main difference between AC and DC generators is that the DC generator contains a ___________________. (p. 481)
  8. 14. The earth's magnetic South Pole is actually a ____________ magnetic pole. (p. 473)
  9. 15. A _______________ compass points toward the earth's magnetic North Pole. (p. 473)