Across
- 2. Earth's motion on its axis
- 5. Another word for orbit
- 7. The imaginary line that goes through the center of Earth
- 8. The four periods into which a year can be divided
- 9. Another word for rotation
Down
- 1. Earth's trip around the sun
- 3. The curved path that Earth follows to travel around the sun
- 4. The changes in the way the moon appears
- 6. The object that orbits Earth
- 8. The largest object in the solar system