Crossword

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Across
  1. 2. claim supported by evidence
  2. 5. proposed answer to a question
  3. 6. saying your evidence supports your claim
  4. 8. all water on a planet
  5. 9. object, diagram, or program
  6. 11. scientist studying spheres of planets
  7. 14. having conditions needed for life
  8. 15. set of parts creating a whole
Down
  1. 1. long narrow groove
  2. 3. notice how thing are alike
  3. 4. gases surrounding a planet
  4. 7. the solid part of a rocky planet
  5. 10. planets with solid surface
  6. 12. natural items on a planets surface
  7. 13. all living things on a planet