Across
- 2. a tide just after the first or third quarters of the moon
- 5. when an object is revolving
- 7. large plain on the surface of the moon that appears dark
- 8. the date when the sun reaches its minimum or maximum declination and is the shortest or longest days of the year
- 10. when the sun crosses the celestial equator
- 13. an event where the moon appears darkened because it is in the Earths shadow
- 17. the model that represents the Earth as the middle of the solar system
- 19. the act of rotating around an axis or center
- 20. a tide just after a new or full moon
Down
- 1. the part of the moon that is facing away from earth
- 3. what an object would do without other forces acting on it
- 4. an event where the sun is obscured by the moon
- 6. an artificial body placed in orbit around a planet
- 9. means moon
- 11. the model that represents the sun as the center of the solar system
- 12. the shadow cast by the earth or moon over an area
- 14. the dark central part of a sun spot
- 15. when the moon appears to increase in size
- 16. when the moon appears to decrease in size
- 18. a large bowl shaped cavity in the surface of a planet