Across
- 5. The very darkest part of the Moon's shadow
- 6. Occurs when the Sun is farthest north or south of the equator
- 8. Holds Earth and the Moon together
- 10. tide produced by the Sun's pull when the Moon is at a right angle to the Sun
- 12. part of the Moon's shadow that is less dark than the umbra
- 13. The path Earth follows as it revolves around the Sun
- 14. The imaginary line that passes through Earth's center and the North and South poles
- 18. Occurs when the Moon passes directly between Earth and the Sun, blocking sunlight from Earth
- 19. Force of gravity on an object
- 20. Occurs between the two high tides
- 21. When the Moon's shadow hits Earth, or Earth's shadow hits the Moon
Down
- 1. The movement of one object around another
- 2. The spinning of Earth on its axis
- 3. Different shapes the Moon makes each time it makes a complete revolution around the Earth
- 4. Occurs at a full moon when the Earth blocks sunlight from the Moon
- 7. Opposite force acting against gravity
- 9. Occurs when the Sun is directly above Earth's equator
- 11. Does not change when an object's location in space changes
- 15. Rise and fall of the ocean water
- 16. Attracts all objects toward each other
- 17. Tide on the side closest to the Moon
- 18. When Earth, the Sun, and the Moon are in a straight line. These occur twice a month at a new moon and at a full moon
