Across
- 5. a rock floating in space
- 7. second highest layer, contains ozone layer.
- 9. the big ball that heats up Earth
- 10. when particles from the sun hits earth's magnetic field and makes the sky colorful.
- 13. The place we live on
- 14. rain, snow, ice that falls from the sky.
- 15. 4th highest layer, contains the Aurora borealis.
Down
- 1. 5 layers around the earth
- 2. marks the altitude where traditional aircraft can no longer effectively fly.
- 3. third highest layer, where meteors burn up
- 4. closest to the earth.
- 6. layer- absorbs some of the sun's ultraviolet radiation.
- 8. Top layer.
- 11. The thing we breathe in.
- 12. It happens in the Troposphere and it happens every day.