Across
- 3. The slant of Earth’s axis
- 6. In the shortest unbroken line
- 8. When the Moon appears to be getting larger
- 9. When the full moon passes into Earth’s shadow, causing the Moon to appear reddish in color when the Sun, Earth, and the Moon directly line up; lasts 1–3½ hours
- 11. When the Moon passes between Earth and the Sun, covering all or part of the Sun; occurs when the Sun, the Moon, and Earth directly line up; lasts for less than 12 minutes
- 13. The movement of one object around a center or another object
- 16. When the Moon appears to be getting smaller
- 17. Half of a sphere
Down
- 1. The attraction between two objects due to the invisible force of gravity
- 2. Angled or spread out
- 4. The Moon’s repeated pattern of movement and changes in appearance due to its position relative to Earth and the Sun
- 5. The four natural divisions of the year based on changes in temperature due to varying amounts of sunlight received (both intensity and number of daylight hours vary); caused by the tilt of Earth during its revolution
- 7. The imaginary line through Earth that extends from the North Pole to the South Pole and is the center of Earth’s rotation
- 10. The spinning of Earth on its axis that causes day and night to occur
- 12. The shape of the illuminated portion of the Moon as seen by an observer, usually on Earth
- 14. The rise and fall of sea levels caused by the gravitational attraction of the Moon and the Sun
- 15. A curved path followed by a satellite as it revolves around an object