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