The Moon Quiz - Comments

  • #26
D H
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Edit: Wait, they use 6 months as spacing between the full eclipses. That is weird. I would certainly not call that "in a row".
Whet they mean is that there are no intervening partial or penumbral lunar eclipses. Greg has this one right.

I do have to quibble about question #3. When people say that the Moon does have an atmosphere, what they mean is that the Moon has an exceeding low density exoatmosphere, with a surface atmospheric density on the Moon about 10-13 times that of the density of the Earth's atmosphere at the surface. When people say the Moon does not have a global magnetic field, what they mean the the Moon's dipole moment is less than 10-5 times that of the Earth's. There is no way to say that the Moon has no global magnetic field. The best we can say is that the Moon's global magnetic field, if it exists, is less than measurement noise. Measurement noise for magnetic field strength relative to that of the Earth is many orders of magnitude larger than is the measurement noise for particles of gas relative to that of the Earth standard atmosphere.
 
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  • #27
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Did you hear about the restaurant on Moon? Great food, but no atmosphere.
 
  • #28
EnumaElish
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"Congratulations – you have completed The Moon Quiz. You scored 4 points out of 12 points total."
 
  • #29
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8/12; learn something new every day!
 

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