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Io and Europa, the inner two of Jupiter's four largest moons, are

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Re: Io and Europa, the inner two of Jupiter's four largest moons, are  [#permalink]

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New post 31 Mar 2018, 09:01
For the 2nd question I was down to A & B like others, and went with B. I thought the comprehensive theory is the following: "But because of Io's high degree of geological activity, its surface undergoes more-or-less continuous volcanic resurfacing."
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Re: Io and Europa, the inner two of Jupiter's four largest moons, are  [#permalink]

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New post 07 May 2018, 07:30
1
P1 - J's 4 moons are defined, with their properties.
P2 - geological activities of J's moons' are defined.

1. According to the passage, the difference in the amount of crate ring on Callisto's and Io's respective surfaces can probably be explained by the difference between these two moons with respect to which of the following factors? - P2
Lines to look for - Only Callisto reveals no geological activity. Callisto's surface is very heavily cratered from the impact of comets and asteroids; no craters have been detected on Io, even though Jupiter's gravity attracts comets and asteroids passing near it,Io is extremely geologically active
(A) Size - No
(B) Ice content - no
(C) The rate of bombardment by comets and asteroids --- comets and asteroids only happens on Callisto but no geological activity. No crate on IO. this one is not a factor on Io.
(D) The influence of Jupiter's other moons --- No
(E) The level of geological activity --- yes
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2. Which of the following best describes the purpose of the second paragraph of the passage?
refer P2 ; frankly speaking, I think A,B, C are very close. Let see the difference in words.
(A) To provide further evidence of the systematic variation in the characteristics of Jupiter's four largest moons --- P1 provided some difference b/w the moons. P2 take that to next level . This seems the best option.
(B) To present a comprehensive theory to explain the systematic variation in the characteristics of Jupiter's four largest moons --- comprehensive theory .... there is no defined theory here.
(C) To explain the significance of the systematic variation in the characteristics of Jupiter's four largest moons --- yes author is describing a systematic relationship or say difference in characteristics but is it explaining the significance of it. I think A is better option then this one. though it is close.
(D) To introduce facts that contradict conventional assumptions about Jupiter's four largest moons ---- contradict conventional assumptions - no such thing
(E) To contrast the characteristics of Jupiter's four largest moons with the characteristics of the planets of the solar system --- No contrast is defined.
-----------------------------------

3. The author's reference to Jupiter's gravity in line 25 serves primarily to

lines to look for - no craters have been detected on Io, even though Jupiter's gravity attracts comets and asteroids passing near it, substantially increasing the bombardment rate of the inner moons compared to that of the outer ones. Straight A is the answer.

(A) indicate why the absence of craters on Io's surface is surprising
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Re: Io and Europa, the inner two of Jupiter's four largest moons, are  [#permalink]

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New post 24 Sep 2018, 02:25
relatively easy passage, 3/3/ time spent 4.32
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Re: Io and Europa, the inner two of Jupiter's four largest moons, are &nbs [#permalink] 24 Sep 2018, 02:25

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Io and Europa, the inner two of Jupiter's four largest moons, are

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