Earth, Moon, & Sun Review Crossword

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Across
  1. 5. a moon phase that looks like less than a half circle from Earth
  2. 7. to shine light on an object and make it visible
  3. 8. the star that is the main source of light at the center of our solar system
  4. 10. something we observe to be similar over and over again
  5. 11. the border between light and dark on the Moon
  6. 12. Where does the moon get its light?
  7. 14. the sun, the planets that orbit the sun, and other objects that orbit the sun
  8. 18. a moon phase that looks like more than a half circle from Earth
  9. 20. The Moon orbits around the ________.
  10. 21. when the Moon is completely dark
Down
  1. 1. a moon phase that looks like a full circle from Earth
  2. 2. the shape of the illuminated part of the Moon as it appears from Earth
  3. 3. The Earth orbits around the _______.
  4. 4. How much of the moon is always lit up?
  5. 6. a moon phase that looks like half a circle from Earth
  6. 9. the amount of time it takes for a planet to complete one orbit around a star or stars
  7. 13. a moon phase where the Moon is not visible from the Earth
  8. 15. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
  9. 16. the nearly circular path a smaller object (like the Moon) travels around a larger object (like Earth)
  10. 17. The moon's phases repeat every _________.
  11. 19. the relative size of things