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# CR: MERCURY 101

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Current Student
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25 Aug 2006, 09:02
Mercury is the innermost planet in the solar system. After the recent reclassification of Pluto in the 2006 redefinition of "planet", it is also the smallest planet according to the IAU. It orbits the Sun once every 88 days. The planet remains comparatively little known: the only spacecraft to approach Mercury was Mariner 10 from 1974 to 1975, which mapped only 40%â€“45% of the planet's surface.Surface temperatures on Mercury range from about 90 to 700 K, with the subsolar point being the hottest and the bottoms of craters near the poles being the coldest.

If the evidence regarding Mercury is true, which of the following can best be inferred from the passage.

A) Colonization of Mercury is possible within the 22nd century based on the mapping data retrieved by the Mariner 10 spacecraft.
B) Mercury does not meet the requirements to be classified as a a "planet" by the IAU.
C) Future spacecraft missions to Mercury are being planned.
D) Mercury remains enigmatic in many aspects.
E) Mercury has always been classified as the smallest planet in our solar system.
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25 Aug 2006, 09:08
A) Colonization of Mercury is possible within the 22nd century based on the mapping data retrieved by the Mariner 10 spacecraft.
(No information given to support this)
B) Mercury does not meet the requirements to be classified as a a "planet" by the IAU.
(No information given to support this statement)
C) Future spacecraft missions to Mercury are being planned.
(Again, a statement without any supporting info)
D) Mercury remains enigmatic in many aspects.
(Yes, the author mentions that the planet remains comparitively little known ...)
E) Mercury has always been classified as the smallest planet in our solar system.
(No, it has only been recently classified as the smallest planet after the 2006 redifinition of the "planet")
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25 Aug 2006, 09:14
D it is ...
Current Student
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25 Aug 2006, 09:26
D..
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25 Aug 2006, 09:53
Easy D . Still some are not known.
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25 Aug 2006, 10:54
Did u make this on your own?(D)
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25 Aug 2006, 11:15
Current Student
Joined: 29 Jan 2005
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25 Aug 2006, 19:53
sangarelli wrote:
Did u make this on your own?(D)

25 Aug 2006, 19:53
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