Transformation of energy

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Across
  1. 2. sound into electrical energy
  2. 4. electric into light energy
  3. 7. converts light into electrical energy
  4. 9. chemical into mechanical energy
  5. 12. Heat into electrical energy
  6. 13. convert electric into mechanical energy to wash our clothes
  7. 14. chemical into heat energy
  8. 15. chemical into electric energy
Down
  1. 1. mechanical into electric energy
  2. 3. light into chemical energy
  3. 5. Electric into heat energy
  4. 6. mainly used fossil fuel
  5. 8. Example for electrical energy into sound energy
  6. 10. Electric into mechanical energy
  7. 11. uses sunlight to cook food