Chapter 24

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Across
  1. 4. motor driven by a direct current
  2. 7. opposit of attract
  3. 8. igneous rock rich in magnesium
  4. 9. transferring electricity without contact
  5. 10. points near axis of the earth on opposite sides
  6. 13. a cylindrical coil of wire acting as a magnet
  7. 14. discovered electromagneticism
  8. 17. how to determine the magnetic force on something with your right hand
  9. 19. High susceptibility to magnetization
  10. 20. magnetic rock mineral
  11. 21. an instrument that detects small electric currents
  12. 22. change in a planets magnetic field
  13. 24. soft metal core made into a magnet
  14. 25. new oceanic crust formation
Down
  1. 1. an action that changes the direction of an object
  2. 2. motor that converts motive power into electrical power
  3. 3. exert a force on
  4. 5. a unit of magnetic field strength
  5. 6. motor driven by an alternating current
  6. 8. a measurement of the magnetic field in a specific region
  7. 11. prominent Chinese Mariner (Ming Dynasty)
  8. 12. magnetic field lines
  9. 15. forcé perpendicular to the magnetic field from the wire
  10. 16. rotating coil on an electrical motor
  11. 18. directional device (uses magnets)
  12. 23. región in a magnet that is uniform to dierection