Geology on Mars

1234567891011121314
Across
  1. 3. a rocky planet
  2. 7. A feature that forms on the surface of the planet, such as a Mountain,channel or dune.
  3. 8. An event that causes changes in the geospphere, such as flowing water or flowing lava
  4. 10. all the water on Earth
  5. 11. al living things on Earth
  6. 13. the variable in an experiment that the experimenter changes
  7. 14. A set of interacting parts forming a whole
Down
  1. 1. Stands for National Aeronautics and Space Agency
  2. 2. Having the conditions necessary to support life
  3. 4. all the gases that surrounds Earth
  4. 5. A long, narrow groove that forms where water, lava or other liquid flows
  5. 6. any planet with a solid surface
  6. 9. all the solid surface on Earth
  7. 12. the planet that we live on