Science

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Across
  1. 4. all the water and ice on earth
  2. 5. a person who uses science knowledge to design something in order to solve a problem
  3. 7. a group of of parts that work together
  4. 8. process of a liquid turning into a gas
  5. 10. the solid part of earth
  6. 11. vapor water in the form of a gas
Down
  1. 1. the air that surrounds earth
  2. 2. all of the living things on earth
  3. 3. process of a gas turning into a liquid
  4. 6. water that has been used and now contains harmful substances
  5. 9. reaction the process in which substances change into different substances
  6. 12. a supply of something useful