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