Thermal Physics

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Across
  1. 4. made from two different metals and can be used to switch on a fan when it gets too hot
  2. 8. the relationship between pressure and volume at a constant temperature
  3. 11. you can't get any colder than this
Down
  1. 1. the space occupied by a gas
  2. 2. Newton per square metre
  3. 3. an SI unit that tells you how hot something is
  4. 5. to decrease in volume
  5. 6. mass x velocity
  6. 7. the unit for energy
  7. 9. can be caused by collisions between molecules and the container walls
  8. 10. measures the average kinetic energy of the particles
  9. 12. to increase in volume