Amplify 8th Grade: Earth, Moon, Sun

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