Across
- 5. Another scientific name used for Earth's specific moon.
- 8. The phase occurring after a Full Moon where the left half is lit.
- 9. A moon phase that looks like a thin, curved sliver.
- 11. A natural or artificial body that revolves around a larger planet.
- 13. The spinning of the Moon on its axis, which takes the same amount of time as its orbit.
- 15. The period when the sunlit fraction of the Moon is getting smaller.
- 17. The process where debris from Earth's mantle was blasted into orbit following a massive collision.
- 18. The force that keeps the Moon in orbit and is only 17% as strong as Earth's at the surface.
- 19. The phase where the Moon is between the Earth and Sun, appearing completely dark to us.
Down
- 1. The phase where the entire side of the Moon facing Earth is lit up.
- 2. The stage where clumps of ejected material joined together to create the Moon.
- 3. Large, dark, flat plains on the Moon created by ancient lava flows.
- 4. The initial event 4.6 billion years ago when a Mars-sized object struck the molten Earth.
- 6. The different appearances of the Moon due to its changing position relative to Earth and the Sun.
- 7. The 27.3-day journey the Moon takes to complete one full orbit around Earth.
- 9. A bowl-shaped depression caused by the impact of space objects over billions of years.
- 10. The phase occurring about a week after a New Moon where the right half is lit.
- 12. The period when the sunlit fraction of the Moon we see from Earth is getting larger.
- 14. The layer of Earth that provided much of the rocky material found in lunar samples.
- 16. A moon phase that is more than half lit but not yet a full circle.
