Heat Unit Review

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Across
  1. 4. When a liquid becomes a solid
  2. 5. Particles are _________ all the time
  3. 6. When a solid becomes a gas
  4. 9. The coldest place on Earth
  5. 11. All matter is made of tiny ___________
  6. 14. The transfer of radiant energy by means of electromagnetic waves
  7. 15. The transfer of thermal energy by a circulating current of faster and slower moving particles
  8. 16. A material that transfers heat well
  9. 17. Particles have _________ spaces between them
  10. 18. In this state of matter the shape and volume will change
  11. 19. A material that does not transfer heat well
  12. 20. In this state of matter the shape will change but the volume will not
Down
  1. 1. When a solid becomes a liquid
  2. 2. When a gas becomes a solid
  3. 3. The transfer of thermal energy by the collision of particles
  4. 6. In this state of matter the shape and volume will not change
  5. 7. Particles _____________ each other, so they tend to stay together
  6. 8. Particles move __________ when they are heated
  7. 10. When a gas becomes a liquid
  8. 12. When a liquid becomes a gas
  9. 13. The measure of the average kinetic energy of the particles of a substance.