The Cool Puzzle

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Across
  1. 4. Process in which a substance changes directly from a gas to a solid
  2. 7. State of matter in which the molecules are packed together
  3. 9. Process in which a substance changes from a liquid to a gas
  4. 11. Transfer of thermal energy between two objects that do not have direct contact with each other
  5. 14. Process in which a substance changes from a gas to a liquid
  6. 20. Amount of thermal energy needed to ionize a kilogram of a substance
  7. 21. Average kinetic and potential energy of the particles that make up an object
  8. 22. Shifted version of the Kelvin scale at which the zero point is the melting point of water
  9. 24. Process in which a substance changes from a solid to a liquid
  10. 25. The law that states that energy dispersal occurs as often as possible is called the ______ law of thermodynamics
  11. 26. The generalization of the law of conservation of energy to thermal energy is called the ______ law of thermodynamics
  12. 27. Transfer of thermal energy between two objects that have direct contact with each other
  13. 28. Fluid that retains a nearly constant volume
  14. 31. Process in which a substance changes from a liquid to a solid
  15. 32. Amount of energy needed to raise a kilogram of a substance by one degree Kelvin
  16. 33. Measure of the dispersal of energy
Down
  1. 1. Temperature at which vaporization and condensation can occur
  2. 2. Amount of thermal energy needed to vaporize a kilogram of a substance
  3. 3. Transfer of thermal energy
  4. 5. Process in which a substance changes from a gas to a plasma
  5. 6. Amount of thermal energy needed to melt a kilogram of a substance
  6. 8. Process in which a substance changes from a plasma to a gas
  7. 10. Imperial unit of temperature
  8. 12. Device used to measure temperature
  9. 13. Temperature at which ionization and recombination can occur
  10. 15. Transfer of thermal energy in which warmer less dense fluid rises above cooler more dense fluid
  11. 16. Absolute temperature scale that is scaled like the Fahrenheit scale
  12. 17. State of matter that is composed of positively charged ions and free electrons
  13. 18. Fluid whose volume depends on the pressure
  14. 19. Temperature at which melting and freezing can occur
  15. 23. Process in which a substance changes directly from a solid to a gas
  16. 29. Ratio of useful work and input heat
  17. 30. SI unit of temperature