Across
- 7. rain, snow, hail, sleet, or mist
- 9. average weather conditions in an area
- 10. rocky shell forming the surface of the Earth
- 11. region of reduced rainfall on one side of a high mountain
- 15. is one of two days of the year when the sun reaches its northernmost or southernmost point
- 16. 78% of Earth's atmosphere is made up of this gas
Down
- 1. thin layer of gases that envelops Earth
- 2. complete trip around the sun in 365 1/4 days
- 3. this sphere holds Earth's water
- 4. when day and night in both hemispheres is equal length
- 5. thick layer of hot, dense rock
- 6. melted rock
- 8. all people, animals, and plants live in this sphere
- 12. imaginary line that runs through Earth's center from the North Pole to the South Pole
- 13. move around
- 14. center of Earth