Earth, Moon, and Sun Vocabulary

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Across
  1. 3. a moon outside our solar system
  2. 6. The star that is the main source of light at the center of our solar system
  3. 7. the relative size of things
  4. 10. to shine light on an object and make it visible
  5. 12. Eclipse when the moon is completely dark
  6. 13. moon a moon phase in which the moon is not visible from Earth
  7. 14. a planet outside our solar system
  8. 17. the border between light and dark on the moon
  9. 18. moon a moon phase that looks like a half circle from Earth
Down
  1. 1. moon a moon phase that looks like more than half a circle from Earth
  2. 2. a rocky sphere that travels around a planet
  3. 4. moon a moon phase that looks like a full circle from Earth
  4. 5. an object, diagram, or computer program that helps us understand something by making it simpler or easier to use
  5. 6. system the sun, the planets that orbit the sun, and other objects that orbit the sun
  6. 8. moon a moon phase that looks like less than half a circle from Earth.
  7. 9. something we observe to be similar over and over again
  8. 11. phases the shape of the illuminated part of the Moon as it appears from Earth
  9. 15. The nearly circular path of a smaller object (like the moon) travels around a larger object (like the Earth)
  10. 16. the amount of time it takes for a planet to complete on orbit around a star of stars