Physics quiz

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Across
  1. 3. A type of flask
  2. 5. changes the voltage
  3. 6. what the sun gives off
  4. 8. Example of which are coal and petrol
  5. 10. Keeps a roller coaster going
Down
  1. 1. comes in sunflower and Oliver and crude
  2. 2. Not sea current
  3. 4. A dam good way to make electricity
  4. 7. Measured in joules
  5. 9. One joule per second