Thermodynamics

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Across
  1. 3. motor that converts energy into work or motion
  2. 5. physics concerned with heat and other forms of energy
  3. 7. the act of changing from one use or function to another
  4. 8. using tools or devices
  5. 9. the process of becoming cooler; a falling temperature
Down
  1. 1. the study of the connection between heat and work and the conversion of one into the other
  2. 2. a form of energy transferred by a difference in temperature
  3. 4. activity directed toward making or doing something
  4. 6. a relation between things or events