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