Revision

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Across
  1. 5. one of the fossil fuels
  2. 6. breaking down food
  3. 7. process of separating an insoluble solid from a liquid
  4. 9. made of tissues with different functions
  5. 10. particles spreading out
Down
  1. 1. energy source using the sun
  2. 2. liquid to gas
  3. 3. unit for energy
  4. 4. solid to liquid
  5. 7. liquid to a solid
  6. 8. energy in a moving object
  7. 11. big star in our solar system