Across
- 4. the slant of the Earth's axis, 23.5 degrees
- 6. the first moon phase following a full moon. The moon is illuminated on the left side.
- 10. the half of the Earth that is north of the Equator
- 11. the half of the Earth that is south of the equator
- 13. to change or develop over time
- 14. the phase between the first quarter moon and full moon.
Down
- 1. the moon appears fully illuminated from the Earth's perspective.
- 2. third quarter, a phase of the moon that occurs when the left side of the moon is half-illuminated
- 3. the sun is at the center of the solar system
- 5. a phase of the moon that occurs when the moon is a quarter of the way through its monthly orbit around Earth and appears half-illuminated on the right side.
- 7. the final phase of the moon's cycle, a small sliver of the moon is visible on the left side
- 8. occurs when the position of the Sun is exactly over the Equator. It happens twice a year.
- 9. the earth is at the center of the solar system
- 12. The regular rising and falling of the ocean's water levels caused by the moon's gravitational pull
