Across
- 4. The middle layer of Earth’s atmosphere where most meteors burn
- 7. When less dense warm air slides up more dense cool air
- 8. Huge bodies of air
- 9. When more dense cool air pushes warm air up and out of the way
- 10. The thing that changes in an experiment
- 14. A layer of gases around a planet or moon
- 16. The layer of the atmosphere where all weather happens
- 17. When warm molecules rise and cold ones sink
- 18. All living organisms on Earth
- 19. The 4th layer of the atmosphere
- 20. All water on, above, or under Earth
Down
- 1. Energy that travels from one place to another
- 2. The weight of the air molecules in the air
- 3. The thing that is kept the same in experiments
- 5. The second layer of Earth’s atmosphere that has the ozone layer
- 6. Water coming in the form of weather
- 11. The last and farthest layer of the atmosphere from Earth
- 12. The ground, layers, and everything rocky in/on Earth
- 13. When hot molecules hit cold ones to make all of them the same temperature
- 15. The result of changing something in an experiment