crossword

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Across
  1. 2. sound
  2. 5. Mass
  3. 8. electrical
  4. 10. light
  5. 11. Elastic
  6. 12. Energy Potential energy
  7. 13. thermal
  8. 14. mechanical
  9. 15. Velocity
  10. 16. Energy
Down
  1. 1. Conservation
  2. 3. Energy Kinetic Energy
  3. 4. nuclea
  4. 6. Gravitational
  5. 7. heat
  6. 9. chemical