Across
- 2. Lunar phases when the moon appears to be shrinking from full moon to new moon
- 4. Able to be seen, not in shadow, being hit by light rays
- 5. Lunar phases when the moon appears to be growing from new moon to full moon
- 6. Darkness within space from which rays from a source of light are cut off by an blocking object
- 11. The lunar phase where the moon, Earth, and the sun form a perpendicular angle; the moon looks like a semicircle with half visible
- 12. The appearance of the lit area of the moon as seen from Earth
- 13. closest point in an orbit
Down
- 1. Lunar phase when more than half but less than all of the visible side is illuminated
- 3. lunar phase where the moon is directly between Earth and the sun; the new moon cannot be seen from Earth
- 7. farthest point in an orbit
- 8. Lunar phase when less than half but at least some of the visible side is illuminated
- 9. Change in direction (redirection) of light rays after hitting an object
- 10. The lunar phase where Earth is directly between the sun and the moon; the moon looks like a circle
