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Astronomy Quote Quiz: Numbers Game

Question # 15 (June 28 - September 15, 2005)

Q: The X-rays from Saturn s rings are primarily due to fluorescence following absorption of solar X-rays by water ice in the rings. About what thickness of ice does it take to absorb the solar X-rays?
1 nanometer bar34% 52
1 micrometer bar30.7% 47
1 millimeter bar19.6% 30
1 meter bar15.7% 24

Total Votes: 160

Answer: C. 1 millimeter


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