Earth Moon and Sun Unit Vocab

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