Across
- 2. Cold air that replaces warm air
- 4. The water and water cycle of Earth
- 8. A form of water that falls into Earth's surface
- 9. The layer of gas surrounding a planet
- 10. Energy that travels through space
- 11. The Earth's layer and continents
- 13. The living things on Earth
- 15. The physical transfering of heat through
- 16. Less dense air slides on denser air mass.
- 19. The result of an experiment
- 20. The second layer closest to Earth's atmosphere
- 21. Heat moved by currents
- 22. A large body of air
Down
- 1. The force of air on a surface
- 3. The fourth atmosphere level
- 5. The thing that is changed on purpose
- 6. The outer layer of the atmosphere
- 7. The lowest layer of Earth's atmosphere
- 12. The closest type of cloud to Earth's surface
- 14. The thing that is kept constant during an experiment.
- 17. The coldest layer of the atmosphere
- 18. The moisture of the air