magnet

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Across
  1. 2. - The two ends of a piece of magnetic material where the magnetic forces are strongest,labeled north pole and south pole.
  2. 4. – a coil of wire with a current that acts a bar magnet.
  3. 5. -A device that can increase or decrease the voltage of an alternating current.
  4. 7. - An area surrounding an electron that exerts a force on anything nearby with an electric charge; strongest nearest the electron and weakens with distance.
  5. 9. - Strong temporary magnet made by inserting an iron core into a wire coil and passing an electric current through the coil.
  6. 11. – a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons
  7. 14. – a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons
  8. 15. - A device that contains a rotating electromagnet that changes electrical energy to mechanical energy.
  9. 17. - A device that uses electromagnetic induction to induce electrical current by rotating loops of wire through a magnetic field.
  10. 18. - 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.
  11. 19. - A material that does not allow heat or electrons to move through it easily.
Down
  1. 1. - A property of some materials in which there is a force of repulsion or attraction between certain like and unlike poles.
  2. 3. - is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space.
  3. 6. - A difference in electrical potential, measured in volts with a voltmeter.
  4. 8. – a force produced when magnetic poles interact.
  5. 9. – the relationship between electricity and magnetism.
  6. 10. - The region around a magnet where magnetic forces act. magnetic field.
  7. 12. - The opposition to the flow of electrons through a conductor; measured in ohms.
  8. 13. - A material that allows electrons to move easily through it.
  9. 16. - 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.