Unit 2: The Earth-Moon System Review

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Across
  1. 2. one side of the Moon faces the Earth always because the Moon is tidally ________
  2. 5. a _________ month is the time it takes the moon to return to the same position in our sky relative to the stars
  3. 6. this type of eclipse is called a "ring of fire" eclipse
  4. 8. when an object is on the opposite side of the sky from another
  5. 11. the closest point in an object's orbit around the Sun
  6. 12. the stuff that gets thrown out during an asteroid impact
  7. 14. less of the moon is lit every night
  8. 16. lunar _____ are where the Moon's orbit around the Earth intersection the ecliptic, the plane of the Earth's orbit around the Sun
  9. 20. only a sliver of the moon is lit
  10. 21. the furthest point in an object's orbit around the Sun
  11. 22. more than half the moon is light
  12. 24. the "full shadow" part of an eclipse
  13. 26. moon blocks light from hitting the earth in a _____ eclipse
  14. 28. an _____________ month is the time it takes the moon to go from perigee to perigee
  15. 30. the large dark areas on the moon once thought to be oceans but are now known to be cooled lava fields
Down
  1. 1. when an object is right next to another in the sky
  2. 3. more of the moon is lit every night
  3. 4. the closest point in an object's orbit around the Earth
  4. 7. long straight lines that go outward from impact craters
  5. 9. when the Sun's tidal force on the Earth adds to the Moon's tidal force on the Earth a ________ tide occurs
  6. 10. the top layer of any astronomical body
  7. 13. the furthest point in an object's orbit around the Earth
  8. 15. when the Sun's tidal force on the Earth subtracts from the Moon's tidal force on the Earth a ________ tide occurs
  9. 17. how "non circular" an elliptical orbit is
  10. 18. the "partial shadow" of an eclipse
  11. 19. the _______ limit is the innermost distance a self gravitating body can orbit without getting torn apart by tidal forces
  12. 21. how reflective an object is
  13. 23. half of the moon is light
  14. 25. tidal force on an object is the difference in the force of ________ on the near side of an object and the far side of an object
  15. 27. a ___________ month is the time it takes the moon to orbit the Earth, node to node
  16. 29. earth blocks light from hitting the moon in a _____ eclipse