Why does the Moon Change Shape?

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Across
  1. 1. Turns around.
  2. 3. A tool that makes distant objects seem closer.
  3. 5. Stages of growth; shapes of the moon at a particular time.
  4. 7. A number of related things coming one after another.
  5. 8. Exact or precise.
Down
  1. 2. A slender thin piece.
  2. 4. The shape of the moon when you can only dee the thin, curved part.
  3. 6. An expert who studies the sun, moon, stars and planets.