Science Review

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Across
  1. 5. The galaxy we live in.
  2. 6. the amount of space inside of an object.
  3. 8. The highest point of a wave.
  4. 9. The biggest planet.
  5. 12. A solid, liquid or gas.
  6. 14. The planet with the most rings.
  7. 15. A remain of life that has been preserved over time.
  8. 17. The planet we live on.
  9. 18. The amount of matter inside of an object.
  10. 19. The planet farthest from the sun.
Down
  1. 1. The Milky Way is one of them.
  2. 2. One planet away from Earth.
  3. 3. One planet away from Earth.
  4. 4. The system we live in.
  5. 5. The planet closet to the sun.
  6. 7. The coldest planet.
  7. 10. The length from crest to crest on a wave.
  8. 11. The difference between the resting line and the crest.
  9. 13. The lowest point of a wave.
  10. 16. The only star in our solar system.