Across
- 2. This layer the hottest on Earth.
- 8. ____layer blocks harmful rays
- 10. The ______ is between the troposphere and the stratosphere
- 11. this layer is closest to Earth.
- 12. This is colorful lights
Down
- 1. The edge of space.
- 3. Is directly above tropopause.
- 4. Blocks meteors.
- 5. _____ come to earth through the exosphere
- 6. ______ can include rain and thunder
- 7. A layer formed by the sun's ultraviolet radiation
- 9. It has molecules far apart