Where do clouds come from?

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Across
  1. 3. water when it is a gas, such as steam
  2. 5. anything that takes up space; can be in different forms such as solid, liquid, or gas
  3. 6. a state of matter, such as water when it is steam
  4. 7. when a solid turns into a liquid, such as when ice melts into water
  5. 8. the process of a gas changing to a liquid
  6. 10. the process of a liquid changing to a gas
  7. 11. to pay close attention to something
  8. 14. a state of matter, such as water when you can pour it
Down
  1. 1. different forms of matter that include solid, liquid, and gas
  2. 2. a cloud near the ground
  3. 4. a test used to discover new information about a question
  4. 8. a collection of tiny water droplets that are visible in the air
  5. 9. a state of matter, such as water when it is frozen ice
  6. 12. to heat a liquid until it bubbles and turns quickly into a gas
  7. 13. water drops that fall from clouds