OG2018 RC7 2x
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Review these RC quizzes right after you do them. For anything that you’re not 100% on google the first bunch of words of the question and seek out explanations online. If after spending some time reviewing you’re still having a tough time then bring the question to your next tutoring session. Really fight to understand the logic of these questions. Remember: 1 is correct 4 are incorrect. Really push yourself to be black and white with correct v. incorrect. It is extremely rare that two answer choices are technically OK but one is stronger. It can happen but we’re talking 1% of the time. So, with that in mind let’s have the mindset that it never happens and that we need to be binary: 1 correct. 4 incorrect. That mindset is key to improvement.
Answer Key:
OG2018 RC7 Q1 – E
OG2018 RC7 Q2 – A
OG2018 RC7 Q3 – A
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Question 1 of 3
1. Question
lo and Europa, the inner two of Jupiter’s four largest moons, are about the size of Earth’s moon and are composed mostly or entirely of rock and metal. Ganymede and Callisto are larger and roughly half ice. Thus, these four moons are somewhat analogous to the planets of the solar system, in which the rock- and metal-rich inner planets are distinct from the much larger gas- and ice+ich outer planets. Jupiter’s moons are, however, more “systematic”: many of their properties vary continuously with distance from Jupiter. For example, lo is ice-free, Europa has a surface shell of ice, and while Ganymede and Callisto are both ice-rich, outermost Callisto has more.
This compositional gradient has geological parallels. lo is extremely geologically active, Europa seems to be active on a more modest scale, and Ganymede has undergone bouts of activity in its geological past. Only Callisto reveals no geological activity. ln similar fashion, Callisto’s surface is very heavily cratered from the impact of comets and asteroids; Ganymede, like Earth’s moon, is heavily cratered in parts; Europa is very lightly cratered; and no craters have been detected on lo, 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. But because of lo’s high degree of geological activity, its surface undergoes more or less continuous volcanic resurfacing.
1. According to the passage, the difference in the amount of cratering on Callisto’s and lo’s respective surfaces can probably be explained by the difference between these two moons with respect to which of the following factors?
CorrectIncorrect -
Question 2 of 3
2. Question
lo and Europa, the inner two of Jupiter’s four largest moons, are about the size of Earth’s moon and are composed mostly or entirely of rock and metal. Ganymede and Callisto are larger and roughly half ice. Thus, these four moons are somewhat analogous to the planets of the solar system, in which the rock- and metal-rich inner planets are distinct from the much larger gas- and ice+ich outer planets. Jupiter’s moons are, however, more “systematic”: many of their properties vary continuously with distance from Jupiter. For example, lo is ice-free, Europa has a surface shell of ice, and while Ganymede and Callisto are both ice-rich, outermost Callisto has more.
This compositional gradient has geological parallels. lo is extremely geologically active, Europa seems to be active on a more modest scale, and Ganymede has undergone bouts of activity in its geological past. Only Callisto reveals no geological activity. ln similar fashion, Callisto’s surface is very heavily cratered from the impact of comets and asteroids; Ganymede, like Earth’s moon, is heavily cratered in parts; Europa is very lightly cratered; and no craters have been detected on lo, 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. But because of lo’s high degree of geological activity, its surface undergoes more or less continuous volcanic resurfacing.
2. Which of the following best describes the purpose of the second paragraph of the passage?
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Question 3 of 3
3. Question
lo and Europa, the inner two of Jupiter’s four largest moons, are about the size of Earth’s moon and are composed mostly or entirely of rock and metal. Ganymede and Callisto are larger and roughly half ice. Thus, these four moons are somewhat analogous to the planets of the solar system, in which the rock- and metal-rich inner planets are distinct from the much larger gas- and ice+ich outer planets. Jupiter’s moons are, however, more “systematic”: many of their properties vary continuously with distance from Jupiter. For example, lo is ice-free, Europa has a surface shell of ice, and while Ganymede and Callisto are both ice-rich, outermost Callisto has more.
This compositional gradient has geological parallels. lo is extremely geologically active, Europa seems to be active on a more modest scale, and Ganymede has undergone bouts of activity in its geological past. Only Callisto reveals no geological activity. ln similar fashion, Callisto’s surface is very heavily cratered from the impact of comets and asteroids; Ganymede, like Earth’s moon, is heavily cratered in parts; Europa is very lightly cratered; and no craters have been detected on lo, even though (25) 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. But because of lo’s high degree of geological activity, its surface undergoes more or less continuous volcanic resurfacing.
3. The author’s reference to Jupiter’s gravity in line 25 serves primarily to
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