Electricity - so far!

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Across
  1. 5. a material that does not allow electricity to pass through it
  2. 7. an energy source that can be used over or replaced
  3. 12. electricity that flows constantly in one direction on a closed path
  4. 14. what is used to capture wind energy
  5. 16. a material that allows electricity to pass through it
  6. 17. a device that converts electrical energy into a different form
  7. 18. an energy source that can only be used once
  8. 19. a form of energy
Down
  1. 1. using water as an energy source
  2. 2. using the sun as an energy source
  3. 3. a sub-atomic particle with a negative charge
  4. 4. objects with unlike charges move towards each other
  5. 6. used to turn electricity on/off
  6. 8. a sub-atomic particle with no charge
  7. 9. objects with like charges move away from each other
  8. 10. - a sub-atomic particle with a positive charge
  9. 11. electricity that does not flow
  10. 13. using the heat from under the earth's surface as an energy source
  11. 15. using plants or animal products as a source of energy