Awesome Groups Crossword Puzzle

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Across
  1. 1. Used moon phases to crate early calendars
  2. 3. Neil...
  3. 5. The rise and fall of Earth's water levels
  4. 7. Yummy cookie used in todays activity!
  5. 9. Scientist who used a telescope to study the surface of the moon
  6. 10. Famous scientist that explained the Moon's gravity and its influence on tides
Down
  1. 2. Anything with mass has a ... pull
  2. 4. The science of the universe, celestial objects, etc.
  3. 6. Earth's natural satellite
  4. 8. Moon phase at the beginning of every month, can be hard to see!