The Sun-Earth-Moon System

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Across
  1. 4. the path an object follows as it moves around another object.
  2. 7. when Earth's rotation axis is tilted directly toward or away from the sun.
  3. 9. the lit part of the moon or a planet that can be seen from Earth.
  4. 10. phases of the Moon during which more of the Moon's near side is lit each night.
  5. 11. the central, darker part of a shadow where light is totally blocked.
  6. 12. when Earth's rotation axis is tilted neither toward nor away from the sun.
Down
  1. 1. the line on which an object rotates.
  2. 2. an occurrence during which the Moon's shadow appears on Earth's surface.
  3. 3. phases of the Moon during which less of the Moon's near side is lit each night.
  4. 5. the spin of an object around its axis.
  5. 6. the orbit of an object around another object
  6. 8. the lighter part of a shadow where light is partially blocked.