science crossword puzzle

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Across
  1. 4. Unit of power.
  2. 7. Useful energy ÷ total energy.
  3. 8. transformation Energy changing form.
  4. 9. How fast energy is used or transferred.
  5. 10. Material that blocks electricity.
  6. 11. current Flow of electric charge.
  7. 12. The push that moves electric charge.
  8. 14. Machine that makes electricity from movement.
  9. 15. Device that supplies electrical energy.
  10. 17. A path for electricity to flow.
  11. 18. circuit Circuit with one path.
Down
  1. 1. diagram Diagram showing energy flow.
  2. 2. Device that changes voltage.
  3. 3. Unit of energy.
  4. 5. Opposition to current flow.
  5. 6. Material that electricity flows through easily.
  6. 8. induction Making electricity using magnets and motion.
  7. 11. transfer Energy moving from place to place.
  8. 13. circuit Circuit with multiple paths.
  9. 16. Law Current depends on voltage and resistance.