Geology on Mars

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