Earth Systems

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Across
  1. 3. to try something again using what you learned the last time
  2. 5. a group of atoms joined together in a particular way
  3. 7. the solid part of Earth
  4. 8. matter made of only one kind of atom or molecule
  5. 11. when a gas turns into a liquid
  6. 13. to put together pieces of information to understand something
  7. 16. all the living things on Earth
  8. 17. the things engineers think about and test to know how well something solves a problem
  9. 19. the stuff that things are made of
  10. 20. what you can observe or measure about something
  11. 21. a process in which substances change into different substances
Down
  1. 1. all of the liquid water and ice on Earth
  2. 2. water in the form of invisible gas
  3. 4. a person who uses science knowledge to design something to solve a problem
  4. 6. a description of how something works or why something happens
  5. 9. the air that surrounds Earth
  6. 10. a group of parts that work together
  7. 12. a supply of something that is useful
  8. 14. water that has been used and now contains harmful substances
  9. 15. when a liquid turns into a gas
  10. 18. to try to make something new that solves a problem