Across
- 4. 0% of the moon is illuminated.
- 5. the action of rotating around an axis or center.
- 7. the light in between the light of a half-moon but less than the light of a full moon
- 9. the instant, approximately one week after a new moon, when one half of the moon's surface is illuminated by the sun.
- 10. time of the moon when its 100% illuminated.
Down
- 1. one of the four periods of the year
- 2. a gradual decrease in light on the moon.
- 3. the movement of one object around a center or another object.
- 6. the time or date at which the sun crosses the celestial equator, when day and night are of equal length.
- 8. the curved sickle shape of the waxing or waning moon.
