Electricity

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Across
  1. 2. Measurement of electrical force
  2. 3. Who discovered electricity?
  3. 5. A switch that interrupts/shuts off an electric circuit at the first indication of an overload
  4. 7. Measurement of electrical current flow- also known as amp
  5. 8. invisible light that has short wavelengths
  6. 12. One thousand watts
  7. 13. Electricity at rest, an excess of electrons deposited on an object
  8. 15. The distance between successive peaks of electromagnetic waves
  9. 17. a device that changes direct current to alternating current
  10. 18. Measurement of electrical resistance
  11. 20. any material that does not conduct electricity
  12. 21. Rubbing two materials together to create electricity
Down
  1. 1. One one-thousandth of an ampere. Facial and scalp devices use this
  2. 4. Electricity flowing in one direction
  3. 6. Electricity flowing back and forth in a pushing and pulling motion
  4. 9. Electricity in motion, the flow of electrons either through a conductor or vacuum
  5. 10. Prevents excessive current from passing through a circuit
  6. 11. What is a positive atom?
  7. 14. What is a negative atom?
  8. 15. Measurement of power usage
  9. 16. Completes an electrical circuit and carries the current safely away
  10. 19. the light at either end of the visible spectrum of light that is invisible to the naked eye