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19 Jul 2022, 21:00
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Question 1
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
66% (01:42) correct
34%
(01:16) wrong
based on 137
sessions
History
Date
Time
Result
Not Attempted Yet
Question 2
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
76% (01:07) correct 24%
(01:09) wrong
based on 124
sessions
History
Date
Time
Result
Not Attempted Yet
Question 3
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
61% (00:54) correct 39%
(00:56) wrong
based on 121
sessions
History
Date
Time
Result
Not Attempted Yet
The binary planet hypothesis—that Earth and the Moon formed simultaneously by the accretion of smaller objects—does not explain why the Moon’s iron core is so small relative to the Moon’s total volume, compared with Earth’s core relative to Earth’s total volume. According to the giant-impact hypothesis, the Moon was created during a collision between Earth and a large object about the size of Mars. Computer simulations of this impact show that both of the objects would melt in the impact and the dense core of the impactor would fall as molten rock into the liquefied iron core of Earth. Te ejected matter—mantle rock that had surrounded the cores of both objects—would be almost devoid of iron. This matter would become the Moon.
1. According to the passage, the binary planet hypothesis holds that
I. Earth and the Moon were formed at the same time
II. smaller objects joined together to form Earth and the Moon
III. the Moon’s core is the same absolute size as Earth’s core
A. I only
B. III only
C. I and II only
D. I and III only
E. II and III only
I. Earth and the Moon were formed at the same time
II. smaller objects joined together to form Earth and the Moon
III. the Moon’s core is the same absolute size as Earth’s core
A. I only
B. III only
C. I and II only
D. I and III only
E. II and III only
2. The giant-impact hypothesis as described in the passage answers all of the following questions EXCEPT:
A. What happened to the rock that surrounded the impactor’s core after the impactor hit Earth?
B. What happened to the impactor’s core after the impactor hit Earth?
C. Where did the impactor that collided with Earth originate?
D. Why is the Moon’s iron core small relative to that of Earth?
E. What was the size of the impactor relative to that of Mars?
A. What happened to the rock that surrounded the impactor’s core after the impactor hit Earth?
B. What happened to the impactor’s core after the impactor hit Earth?
C. Where did the impactor that collided with Earth originate?
D. Why is the Moon’s iron core small relative to that of Earth?
E. What was the size of the impactor relative to that of Mars?
3. Which of the following best describes the organization of the passage?
A. The development of one theory into another is outlined.
B. Two explanations are provided, both of which are revealed as inadequate.
C. A theory is presented, and then evidence that undermines that theory is discussed.
D. Similarities and differences between two theories are described.
E. A flawed hypothesis is introduced, and then an alternative hypothesis is presented.
A. The development of one theory into another is outlined.
B. Two explanations are provided, both of which are revealed as inadequate.
C. A theory is presented, and then evidence that undermines that theory is discussed.
D. Similarities and differences between two theories are described.
E. A flawed hypothesis is introduced, and then an alternative hypothesis is presented.
RC Butler 2022 - Practice Two RC Passages Everyday.
Passage # 289 Date: 20-Jul-2022
This question is a part of RC Butler 2022. Click here for Details
Passage # 289 Date: 20-Jul-2022
This question is a part of RC Butler 2022. Click here for Details
09 Jun 2024, 08:40
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EXPLANATION QUESTION #1
Choices A and B are correct. The question asks what the binary planet hypothesis holds. Choice A is correct: According to the first sentence of the passage, the binary planet hypothesis holds that “Earth and the Moon formed simultaneously,” that is, at
the same time. Choice B is correct: According to the first sentence of the passage, the binary planet hypothesis holds that Earth and the Moon formed “by the accretion of smaller objects,” that is, by smaller objects joining together. Choice C is incorrect: The passage does not mention the absolute sizes of Earth’s core and the Moon’s core; it only compares their sizes relative to the volumes of the two objects.
Choices A and B are correct. The question asks what the binary planet hypothesis holds. Choice A is correct: According to the first sentence of the passage, the binary planet hypothesis holds that “Earth and the Moon formed simultaneously,” that is, at
the same time. Choice B is correct: According to the first sentence of the passage, the binary planet hypothesis holds that Earth and the Moon formed “by the accretion of smaller objects,” that is, by smaller objects joining together. Choice C is incorrect: The passage does not mention the absolute sizes of Earth’s core and the Moon’s core; it only compares their sizes relative to the volumes of the two objects.
09 Jun 2024, 08:40
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EXPLANATION QUESTION #2
The questions in Choices A, B, D, and E are all answered by the giant-impact hypothesis: for Choice A, the rock that surrounded the impactor’s core “would become the Moon”; for Choice B, the impactor’s core “would fall as molten rock into the liquefied iron core of the Earth”; for Choice D, the Moon’s iron core is small relative to the Earth’s core because the matter that formed the Moon was “almost devoid of iron”; and for Choice E, the passage states that the impactor was “a large object about the size of Mars.” But nothing in the passage refers to the origin of the impactor, so Choice C is the correct answer.
The questions in Choices A, B, D, and E are all answered by the giant-impact hypothesis: for Choice A, the rock that surrounded the impactor’s core “would become the Moon”; for Choice B, the impactor’s core “would fall as molten rock into the liquefied iron core of the Earth”; for Choice D, the Moon’s iron core is small relative to the Earth’s core because the matter that formed the Moon was “almost devoid of iron”; and for Choice E, the passage states that the impactor was “a large object about the size of Mars.” But nothing in the passage refers to the origin of the impactor, so Choice C is the correct answer.
