Electricity & Waves Crossword Puzzle

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Across
  1. 1. a principle stating that the total electric charge of an isolated system is fixed.
  2. 3. the SI base unit of electrical current.
  3. 5. a material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this
  4. 8. the study of stationary electric charges or fields as opposed to electric currents.
  5. 11. the SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt.
  6. 14. combination of two waves moving in opposite directions, each having the same amplitude and frequency
  7. 16. devices where equal and opposite charges are held on separate "plates", with a potential difference between them proportional to this charge
  8. 18. system that vibrates at some natural frequency
  9. 21. the property of zero electrical resistance in some substances at very low absolute temperatures.
  10. 24. principle describing the effect of two waves of the same type passing the same point at the same time
  11. 25. motion repeated in equal intervals of time
  12. 27. the pattern of disturbance caused by the movement of energy traveling through a medium as it moves away from the source of the sound
  13. 28. type of wave in which the medium's vibration is parallel to the direction of the wave
  14. 29. materials which have a conductivity between conductors (generally metals) and nonconductors or insulators
  15. 30. the intensity or flux of radiant energy is the power transferred per unit area
Down
  1. 2. an electric current that reverses its direction many times a second at regular intervals
  2. 4. an electric current flowing in one direction only.
  3. 6. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen
  4. 7. the highest surface part of a wave
  5. 9. change in direction of a wave passing from one medium to another caused by its change in speed
  6. 10. process in which two dissimilar materials in close contact produce an electrical voltage when struck by light or other radiant energy
  7. 12. energy that comes from a source and travels through space at the speed of light
  8. 13. any space in which the pressure is considerably lower than atmospheric pressure
  9. 15. store electrical energy in (a battery or battery-operated device)
  10. 17. a substance which does not readily allow the passage of heat or sound
  11. 19. the SI unit of electromotive force, the difference of potential that would drive one ampere of current against one ohm resistance.
  12. 20. connect (an electrical device) with the ground.
  13. 22. a particle of light which essentially is a packet of electromagnetic radiation
  14. 23. the property of sound which is used for differentiating between the loud and faint sound
  15. 26. the distance between equal crests of a wave