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doit_the_clown doit_the_clown
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7 years ago
What evidence is there that Mars may have had an internal magnetic dynamo in its youth?
A)   Phobos and Deimos, the two moons of Mars, show residual radioactivity, as if they had orbited through the high-energy charged particles of a former Martian magnetosphere.
B)   There is no evidence that Mars has ever had an internal magnetic dynamo.
C)   “Fossilized” regions of opposite magnetic polarity have been found near Mars's north and south geographic poles.
D)   Magnetic fields at the surface of Mars show interlocking patterns similar to those produced on the Earth by magnetic reversals in the Earth's internal dynamo.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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doit_the_clown Author
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7 years ago
this is exactly what I needed
jaray75
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Just got PERFECT on my quiz
Ctownsend
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2 hours ago
You make an excellent tutor!
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