Geology on Mars

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Across
  1. 3. A long, narrow, groove that forms where water, lava, or other liquid flows.
  2. 5. Information about the natural world that is used to support or refute (go against) a claim.
  3. 9. The mixture of gases surrounding a planet.
  4. 11. Any planet with a solid surface such as Earth and Mars (two words)
  5. 13. All the liquid water and solid water (ice) on a planet.
Down
  1. 1. Having the conditions necessary to support life.
  2. 2. A claim supported by evidence (two words)
  3. 4. All the living things on a planet.
  4. 6. A proposed answer to a question about the natural world
  5. 7. An object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
  6. 8. The solid part of a rocky planet.
  7. 10. A feature that forms on the surface of a planet such as a mountain, channel, or sand dune.
  8. 12. The process of making clear how your evidence supports your claim.