Science Cross word puzzle

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Across
  1. 3. The Earths main source of heat
  2. 5. What you breathe
  3. 6. an infinite cycle
  4. 10. Snow, sleet, rain etc.
  5. 12. The process from which water turns into liquid
  6. 13. water changing from a vapor to a liquid.
  7. 15. Direct heat transfer
Down
  1. 1. All of earth icy things
  2. 2. An object that keeps stuff in something
  3. 4. when water slowly goes through slowly through a filter
  4. 7. All of the Earths life
  5. 8. A measure of how hot or cold something is
  6. 9. Solid, liquid and gas
  7. 11. one of Earths most important layers
  8. 14. This cannot be created or destroyed