Across
- 3. The Earth spinning on its axis.
- 9. The darkest part of a shadow, especially during an eclipse.
- 15. The period during a total solar eclipse when the sun is completely covered.
- 16. The difference in height between high tide and low tide.
- 17. The Earth orbiting around the sun.
- 19. More than half, but not fully, illuminated moon.
- 20. The moon phase when it's getting smaller.
- 22. The point in Earth's orbit when it's closest to the sun.
- 23. The moon phase when the entire moon is visible.
- 24. The shape of the illuminated portion of the moon as seen from Earth.
- 28. The minimum height reached by a falling tide.
- 31. A thin, curved shape of the moon.
- 32. The moon phase where half of the moon is visible.
- 33. Two high tides and two low tides each day.
Down
- 1. The moon phase when half of the moon is visible again.
- 2. When the moon passes between the sun and Earth, blocking the sun.
- 4. The half of the Earth north of the equator.
- 5. The maximum height reached by a rising tide.
- 6. A tide with the greatest difference between high and low tide.
- 7. One high tide and one low tide each day.
- 8. A tidal pattern with two high tides and one low tide, or vice versa.
- 10. When the Earth passes between the sun and moon, casting a shadow on the moon.
- 11. The point in Earth's orbit when it's farthest from the sun.
- 12. The half of the Earth south of the equator.
- 13. The complete set of phases the moon goes through.
- 14. The moon phase when it's getting bigger.
- 18. When the entire sun or moon is blocked during an eclipse.
- 21. A tide with the least difference between high and low tide.
- 25. The outer part of a shadow, less dark than the umbra.
- 26. The longest or shortest day of the year.
- 27. The start of a lunar cycle.
- 29. When only part of the sun or moon is blocked during an eclipse.
- 30. When day and night are approximately equal in length.