Earth Systems

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Across
  1. 1. The stuff that things are made of
  2. 6. When a liquid turns into a gas
  3. 8. A group of atoms joined together in a particular way
  4. 10. A supply of something that is useful
  5. 16. All of the liquid water and ice on Earth
  6. 17. To try something again using what you learned the last time you tried it
  7. 18. To put together multiple pieces of information in order to understand something
  8. 20. The air that surrounds the Earth
Down
  1. 2. A description of how something works or why something happens
  2. 3. A person who uses science knowledge to design something in order to solve a problem
  3. 4. All the living things on the Earth
  4. 5. substances
  5. 7. When gas turns into a liquid
  6. 9. To try to make something new to solve a problem
  7. 11. A process in which substances change into different substances
  8. 12. The solid part of the Earth
  9. 13. What you can observe or measure about something that helps you figure out what it is
  10. 14. Water that has been used and now contains
  11. 15. A group of parts that work together
  12. 19. Matter that is made of only one kind of atom or molecule