Topical Crosswords series: Physics - Energy

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Across
  1. 1. Ratio of useful energy output to total energy input
  2. 3. Manipulation of matter on an atomic, molecular, and supramolecular scale
  3. 6. Unit of energy often used in food
  4. 7. Basic unit of a chemical element, central in energy changes in reactions
  5. 11. Amount of matter in an object, often a factor in potential energy
  6. 15. Material that resists energy transfer
  7. 16. Reaction that releases energy
  8. 18. Reaction that absorbs energy
  9. 19. Energy stored in bonds of molecules
  10. 23. Energy transfer through electromagnetic waves
  11. 25. Study of heat and energy transfer
  12. 27. Energy stored due to position
  13. 28. Movement of energy from one place or object to another
Down
  1. 2. Heat transfer through fluid movement
  2. 4. SI unit of energy
  3. 5. Form of energy transfer between bodies due to temperature difference
  4. 6. Heat transfer through direct contact
  5. 8. Force that attracts two bodies toward each other, related to potential energy
  6. 9. Measure of the average kinetic energy of particles
  7. 10. Quantum of electromagnetic radiation
  8. 12. Force that opposes motion and converts kinetic energy to thermal energy
  9. 13. Substance that provides energy as a result of a chemical change
  10. 14. Energy due to motion or position
  11. 17. Energy transfer when a force is applied over a distance
  12. 20. Rate of energy transfer
  13. 21. Energy of motion
  14. 22. Total heat content of a system
  15. 24. Device that converts chemical energy into electrical energy
  16. 26. Type of energy harnessed from the sun
  17. 29. A set of interacting components considered to be a distinct physical entity for study