Across
- 4. lunar or solar
- 7. from one side of a circle to the other
- 8. Earth is one unit of this from the sun
- 10. spin on axis
- 12. path in space
- 13. center to outer circle
- 14. created by Earth's tilt
Down
- 1. measure the level of something
- 2. size in comparison
- 3. 2:4 = 1:2
- 5. fact or event to be observed by senses
- 6. 2:4
- 9. portion of the moon
- 11. invisible line on Earth
- 15. space between to lines that intersect