Across
- 3. the effect of the warming of Earth's surface
- 7. means turning or change
- 8. made up of all frozen water on Earth
- 9. the uppermost layer of the atmosphere
- 10. the central part of Earth - twice as dense as mantle
- 12. my Science teacher's last name
- 14. where gases are layered and do not mix much
- 15. lies below the crust
- 16. this layer absorbs ultraviolet solar radiation
Down
- 1. contains the air we breathe
- 2. layer between thermosphere and stratosphere
- 4. the second most abundant gas in the atmosphere
- 5. contains living things
- 6. part of earth that is liquid water
- 9. where temperatures are highest
- 11. the most abundant gas in the atmosphere
- 13. divided into three layers crust mantle core