Earth, Moon, and Sun Vocab

12345678910111213141516171819
Across
  1. 1. A planet outside our solar system.
  2. 4. The amount of time it takes for a planet to complete one orbit around a star or stars.
  3. 8. A moon phase that looks like a half-circle from Earth.
  4. 9. A moon phase that looks like more than half a circle from Earth.
  5. 11. To shine on an object and make it visible.
  6. 12. The relative size of things.
  7. 13. Something we observe to be similar over and over again.
  8. 14. The nearly circular path a smaller object (like the moon) travels around a larger object (like Earth)
  9. 15. A moon phase that looks like a full circle from Earth.
  10. 17. When the Moon is completely dark.
  11. 18. The shape of the illuminated part of the Moon as it appears from Earth.
  12. 19. A rocky sphere that travels around a planet.
Down
  1. 2. A moon outside our solar system.
  2. 3. The border between light and dark on the moon.
  3. 5. The star that is the main source of light at the center of our solar system.
  4. 6. A moon phase that looks like less than half a circle from Earth.
  5. 7. An object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
  6. 10. The sun, the planets that orbit the sun, and other objects that orbit that orbit the sun.
  7. 16. A moon phase in which the Moon is not visible from Earth.