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