Earth, Moon, Sun Chapter 2 Vocabulary

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