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Across
  1. 4. periodic rise and fall of oceans surface caused by gravitational forces between earth, moon and sun.
  2. 6. The lit portion of the moon becomes larger.
  3. 7. the spin of an object around its axis
  4. 8. occurs when Earth's rotation axis is tilted neither toward nor away from sun
Down
  1. 1. movement of one solar system object into shadow of another
  2. 2. the orbit of an object around another object.
  3. 3. the lit portion of the moon becomes smaller
  4. 5. when earths rotation axis is tilted directly toward or away from the sun