Science Exam Crossword

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Across
  1. 3. An electrical circuit where the current flows through more than one path. If one path is interrupted, current will still flow through the other paths.
  2. 5. A property of some materials in which there is a force of repulsion or attraction between certain like and unlike poles.
  3. 9. A device that contains a rotating electromagnet that changes electrical energy to mechanical energy.
  4. 12. The region around a magnet where magnetic forces act.
  5. 14. The flow of electrons measured for sound intensity
  6. 15. substance in which a wave travels through
  7. 17. A device that uses electromagnetic induction to induce an electrical current by rotating loops of wire through a magnetic field.
  8. 19. disturbance in which a wave travels through
  9. 20. The two ends of a piece of magnetic material where the magnetic forces are strongest, labeled north pole and south pole.
  10. 21. A device that can increase or decrease the voltage of an alternating current.
  11. 22. An electrical circuit where the current has only one path. If the path is interrupted in any point, it stops current flow in the entire circuit.
Down
  1. 1. A difference in electrical potential, measured in volts with a voltmeter.
  2. 2. the relationship between electricity and magnetism.
  3. 4. area where the particles that are spread apart
  4. 6. In a wave, the distance from the rest position of the medium to either the crest or trough.
  5. 7. a coil of wire with a current that acts like a bar magnet.
  6. 8. A material that allows electrons to move easily through it.
  7. 10. explains how both moving and stationary charged particles interact.
  8. 11. An area surrounding an electron that exerts a force on anything nearby with an electric charge; strongest nearest the electron and weakens with distance.
  9. 13. The opposition to the flow of electrons through a conductor; measured in ohms.
  10. 15. force produced when magnetic poles interact:ct.
  11. 16. A material that does not allow heat or electrons to move through it easily.
  12. 18. Strong temporary magnet made by inserting an iron core into a wire coil and passing an electric current through the coil.