EMS vocab

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