Moon Phases Challenge Project

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Across
  1. 1. a force that tries to pull two objects towards each other
  2. 4. the movement of an object, like the Earth, around another object.
  3. 5. change in the appearance of the Moon as it makes one full revolution around the Earth
Down
  1. 2. spinning of an object
  2. 3. caused by the pull of gravity from the Moon