Across
- 3. Predictable and repeating pattern
- 6. Energy emitted
- 11. Lines "across" the globe
- 12. Cycles due to orbital variation
- 14. Wobble of Earth's tilt
- 15. Measure of reflectance
- 16. Rocks and plates
- 17. Water
- 18. Air
Down
- 1. Darker areas on the sun's surface
- 2. Current condition of atmosphere
- 4. Ice
- 5. Measure of radiant power
- 7. Weather patterns over longer periods
- 8. Colder climate period
- 9. Warmer climate period
- 10. Life
- 13. Lines "up and down" the globe