Sun, Earth, and Moon System

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Across
  1. 4. less of the Moon is lit each night; it appears to shrink
  2. 5. the outer, lighter part of a shadow
  3. 6. the spinning motion of an object
  4. 7. the imaginary line that an object spins around
  5. 11. occurs when the Moon creates a shadow on Earth and blocks out the Sun
  6. 12. the path that an object follows as it moves around another
  7. 13. the motion of one object around another
  8. 15. the tide during New Moon and Full Moon phases in which high tides are very high and low tides are very low
  9. 16. the portion of the Moon that appears sunlit from Earth
  10. 17. the phase of the Moon between Quarter Moons and Full Moons
Down
  1. 1. the tide during Quarter phases of the Moon in which high tides are not too high and low tides are not too low
  2. 2. the cycle of the phases of the moon that takes approximately a month
  3. 3. the central, darkest part of a shadow
  4. 4. more of the Moon is lit each night; it appears to grow
  5. 8. day when Earth's axis is pointed most toward or away from the Sun
  6. 9. occurs when the Moon moves into the shadow of the Earth
  7. 10. the phase of the Moon between New Moon and Quarter Moons
  8. 14. day when Earth's axis is neither pointed toward nor away from the Sun