Across
- 3. sun is at its maximum or minimum height in the year
- 10. refers to the ability to live on a planet, often based on intensity of solar energy
- 11. short days, long nights
- 12. long days, short nights
- 14. time-telling shadow-caster on a sundial
- 15. ancient time-telling device
Down
- 1. days become shorter and nights longer
- 2. earth's is 23.5 degrees
- 4. in reference to the north or south half of the glob
- 5. day and night are equal
- 6. gridlines counting north or south of the equator
- 7. days become longer and nights shorter
- 8. period of a year divided into solstices and equinoxes
- 9. greater tilt causes more ___ seasons
- 13. a ___ with an axial tilt of zero would have no seasons