Across
- 1. (50-85km)- where meteors burn up
- 4. Middle of the Earth
- 8. (0-10 km)where we live; 75% of air; weather
- 9. An observation using numbers
- 10. where the Auroras occur
- 11. Running trials to test the relationship between two things
- 12. A observation using your senses
Down
- 2. (10-50km)- contains ozone (O3)
- 3. Layer of Earth consisting of the air
- 5. process by which thermal energy (heat) moves through a fluid like air or water
- 6. Where satellites orbit Earth
- 7. A prediction of what you think will happen