Geology of Mars Crossword Puzzle

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Across
  1. 2. to notice how two or more things are alike or different
  2. 3. argument: a claim supported by evidence
  3. 4. all the liquid water and solid water (ice) on a planet
  4. 6. the process of making clear how your evidence supports your claim
  5. 10. planet: any planet with a solid surface, such as Earth or Mars
  6. 12. all the living things on a planet
  7. 13. a proposed answer to a question about the natural world
  8. 14. a set of interacting parts forming a complex whole
  9. 15. information about the natural world that is used to support or go against (refute) a claim
  10. 16. a feature that forms on the surface of a planet, such as a mountain, channel, or sand dune
  11. 17. an object, diagram, or computer program that helps us understand something by making it
Down
  1. 1. having the conditions necessary to support life
  2. 3. or easier to see
  3. 5. geologist: a scientist who studies the geospheres of planets in our solar system
  4. 7. process: an event or series of events that causes changes in the geosphere, such as flowing water or flowing lava
  5. 8. the mixture of gases surrounding a planet
  6. 9. the solid part of a rocky planet
  7. 11. a long, narrow groove that forms where water, lava, or other liquid flows