Across
- 4. to return light, heat, sound, and so on, after it strikes a surface
- 8. the mixture of gases that surrounds Earth
- 10. all the water on Earth
- 11. the process by which a liquid changes into a gas
- 12. the process by which a gas changes to a liquid
- 13. the process by which a liquid turns in a crystalline solid
- 14. the act of things coming together and having an effect on each other
Down
- 1. water that contains less than 0.2 percent dissolved salts
- 2. a group of actions that end in a certain result
- 3. the solid part of Earth
- 5. the process by which plants release water vapor into the atmosphere
- 6. the way that something is divided or spread out
- 7. to take in or soak up
- 9. all living things on Earth