Physics crossword

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Across
  1. 3. reverses current direction
  2. 6. a force’s turning effect on an object
  3. 8. potential difference
  4. 11. measures current
  5. 12. motion energy
  6. 13. temperature unit
  7. 15. current unit
  8. 17. decay of unstable nuclei
  9. 18. rate of energy transfer
Down
  1. 1. changes voltage
  2. 2. smallest amounts of energy
  3. 4. includes everything
  4. 5. energy unit
  5. 7. how matter, space and time relate to each other
  6. 9. change in velocity
  7. 10. magnitude but no direction
  8. 14. a star
  9. 16. magnitude and direction