Water Encyclopedia

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Across
  1. 2. what you observe or measure about something that helps figure out what it is
  2. 5. all the living things on Earth
  3. 7. matter that is made of only one kind of atom or molecule
  4. 8. the solid part of Earth
  5. 9. a place where freshwater is stored
  6. 12. water that has been used and now contains harmful substances
  7. 14. a supply of something that is useful
  8. 15. all of the liquid water and ice on Earth
  9. 17. a group of atoms joined together in a particular way
  10. 19. when a gas turns into a liquid
  11. 20. water in the form of
Down
  1. 1. a process in which substances change into different substances
  2. 3. water that is found in soil and rock underground
  3. 4. to save or protect a resource for future use
  4. 6. a community of organisms together with its environment
  5. 10. a person who uses science knowledge to design something to solve a problem
  6. 11. the air that surrounds Earth
  7. 13. when a liquid turns into a gas
  8. 16. a long period of dry weather
  9. 18. to change from a gas into a liquid