Geology on Mars

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