transformation of energy

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Across
  1. 1. electrical into chemical
  2. 4. heat into mechanical
  3. 6. chemical into electrical
  4. 8. chemical into heat
  5. 9. light into electrical
  6. 11. solar into heat energy
  7. 13. electrical into light
  8. 14. light into chemical
Down
  1. 2. electrical into heat
  2. 3. mechanical into electrical
  3. 5. heat into electrical energy
  4. 7. electrical into sound energy
  5. 10. sound into electrical
  6. 12. chemical into mechanical
  7. 15. electrical into mechanical