Across
- 6. the border between light and dark on the Moon
- 8. when the Moon is completely dark
- 9. the nearly circular path a smaller object (like the Moon) travels around a larger object (like Earth)
- 10. the star that is the main source of light at the center of our solar system
Down
- 1. the shape of the illuminated part of the Moon as it appears from Earth
- 2. to shine light on an object and make it visible
- 3. something we observe to be similar over and over again
- 4. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
- 5. the relative size of things
- 7. a rocky sphere that travels around a planet