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"Solar wind" is the term scientists use to describe the stream of part
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14 Dec 2022, 10:00
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Is your answer correct? Yes No Not Sure
"Solar wind" is the term scientists use to describe the stream of particles that the sun's corona constantly emits. These solar winds, which consist mainly of hydrogen and helium, are intensely hot, fully ionized plasma. Because of the corona's intense heat, these particles continuously escape the sun's gravitational attraction, flowing away from the sun at extreme velocities. Solar winds, though, are not without variation, because they contain faster and slower moving pockets. For instance, solar winds that originate from streamers are slower moving winds at approximately 300 km/second, as opposed to the winds that originate from corona holes and reach speeds of 800 km/second. As they flow away from the sun, tangential discontinuities and interplanetary shocks form, producing pressure variations. Moreover, researchers also know that solar winds are directly related to geomagnetic storms, auroras, and comets. It is these winds that cause comet tails to bend away from the sun, as Kepler accurately predicted in the early 1600s.
Studies have been done on the effect of solar winds on the planets in the solar system. While all the planets are surrounded by this hot, super-charged plasma, the Earth's magnetic field protects it from the solar wind by deflecting the particles. However, solar winds are responsible for the Earth's magnetosphere, and changes in their speed and direction strongly influence Earth's space environment. As the planet closest to the sun, Mercury endures the main impact of solar winds. If Mercury had an atmosphere, these winds would have stripped it away, leaving the planet bathed in radiation. Though Mars is much further from the sun than Mercury, solar winds have also greatly reduced its atmosphere. While Venus has a substantial atmosphere-100 times denser than ours — solar winds reduce its clouds. It is not just those planets nearest the sun which bear the effects of solar winds: The winds travel far beyond the limits of Pluto. Inter-estingly, while much is now known about solar winds, scientists still do not fully understand how the gases and particles in the sun's corona reach such high velocities.
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10% (03:21) correct
90% (02:34) wrong based on 30 sessions
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Consider each of the following answer choices separately and select all that apply.
According to the passage, which of the following is true of the effect of solar winds on the Earth?
A. Though the Earth’s magnetic field largely protects it from the full effects of solar winds, the winds have an impact on its magnetosphere and its space environment. B. Solar winds play a significant role in the development of auroras and geomagnetic storms in the earth’s space environment. C. Because of the corona’s intense heat, solar wind particles continuously escape the sun’s gravitational attraction, flowing away from the corona at extremely high velocities and surrounding the Earth with hot, super-charged plasma.
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85% (00:32) correct
15% (00:27) wrong based on 27 sessions
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It can be inferred from the passage that the Earth’s magnetic field acts to
A. absorb the particles blown by solar winds B. incinerate the particles present in solar winds C. assimilate the particles in solar winds into the Earth’s atmosphere D. divert the particles in solar winds from the Earth E. re-orient the particles in solar winds toward a central collection point
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64% (00:50) correct
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The author most likely discussesKepler’s predictions in order to
A. illustrate the observable effect solar winds have had on other celestial objects B. denounce Kepler’s work as unreliable because the technology required to study solar winds directly has only been developed within the last century C. describe more generally the first major contribution to the study of solar winds and the sun D. disprove Kepler’s theories on the motion of comets and auroras E. establish a standard against which to compare the observations concerning the atmospheres of Mars and Mercury
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Select the sentence that attempts to correct a possible misconception about the effects of solar winds.
Re: "Solar wind" is the term scientists use to describe the stream of part
[#permalink]
16 Dec 2022, 05:00
Expert Reply
QUESTION 1
Since solar winds are directly related to geomagnetic storms, auroras, and comets, and cause comet tails to bend in particular directions, they play a significant role in the development of auroras and geomagnetic storms, thus supporting choice (B). The second paragraph states both that the Earth’s magnetic Field protects it from the solar winds, and that solar winds are responsible for the Earth’s magnetosphere, and changes in their speed and direction strongly influence Earth’s space environment, thus supporting choice (A). The First part of choice (C) is almost an exact reproduction of sentence 3, but that sentence doesn’t say anything about supercharged plasma.
Re: "Solar wind" is the term scientists use to describe the stream of part
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16 Dec 2022, 05:15
Expert Reply
QUESTION 2
The author uses the word deflecting to describe the action of Earth’s magnetic field in the face of the solar winds. In other words, the earth’s magnetic field protects the earth by turning aside the harmful, radiation-filled solar winds. Look for an answer choice that has a similar meaning.Eliminate choices (B) and (E) because they are not supported by the text.Eliminate choices (A) and (C), which contradict the passage.Choice (D) is the correct answer because the word divert is a synonym for the word deflect, and this action would provide the protection that is observed.
Re: "Solar wind" is the term scientists use to describe the stream of part
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16 Dec 2022, 05:30
Expert Reply
QUESTION 3
Eliminate choice (B) because it is not supported by the text; the author makes no mention of the technology required for scientists to observe solar winds.Eliminate choice (C) for similar reasons; while Kepler made an accurate guess regarding comet tails and the reasons for which they bend away from the sun, one cannot infer that these observations constitute the first major contribution to the study of solar winds or the sun more generally.Choice (D) goes beyond the scope of the text in discussing Kepler’s work, and choice (E) compares two different types of information.The correct answer is choice (A).
Re: "Solar wind" is the term scientists use to describe the stream of part
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16 Dec 2022, 05:45
Expert Reply
QUESTION 4
It is not just those planets nearest the sun… The credited response, the second sentence from the end of the passage, indicates that some people might be expected to believe solar winds only affect the innermost planets. If you were tempted by the sentence that begins Solar winds, though, are not without variation, be sure to read the question carefully: Like most of the first paragraph, that sentence focuses on the solar winds themselves, rather than their effects.
Re: "Solar wind" is the term scientists use to describe the stream of part
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06 May 2023, 06:39
Question 1
“ Studies have been done on the effect of solar winds on the planets in the solar system. While all the planets are surrounded by this hot, super-charged plasma, the Earth's magnetic field protects it from the solar wind by deflecting the particles. ”
This statement supports choice C, so why is this not correct?
C. Because of the corona’s intense heat, solar wind particles continuously escape the sun’s gravitational attraction, flowing away from the corona at extremely high velocities and surrounding the Earth with hot, super-charged plasma.
Re: "Solar wind" is the term scientists use to describe the stream of part
[#permalink]
06 May 2023, 07:00
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Expert Reply
The same sentence you cited tells you that C is not TRUE
“ Studies have been done on the effect of solar winds on the planets in the solar system. While all the planets are surrounded by this hot, super-charged plasma, the Earth's magnetic field protects it from the solar wind by deflecting the particles. ”
ALL the other planets but our earth are surrounded by that plasma. Luckily for us NOT, otherwise we were like inside a barbecue
Re: "Solar wind" is the term scientists use to describe the stream of part
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06 May 2023, 08:13
Carcass wrote:
QUESTION 1
Since solar winds are directly related to geomagnetic storms, auroras, and comets, and cause comet tails to bend in particular directions, they play a significant role in the development of auroras and geomagnetic storms, thus supporting choice (B). The second paragraph states both that the Earth’s magnetic Field protects it from the solar winds, and that solar winds are responsible for the Earth’s magnetosphere, and changes in their speed and direction strongly influence Earth’s space environment, thus supporting choice (A). The First part of choice (C) is almost an exact reproduction of sentence 3, but that sentence doesn’t say anything about supercharged plasma.
Choice B said about earth, but in the passage it doesn't mention about earth
Re: "Solar wind" is the term scientists use to describe the stream of part
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06 May 2023, 09:58
Carcass wrote:
The same sentence you cited tells you that C is not TRUE
“ Studies have been done on the effect of solar winds on the planets in the solar system. While all the planets are surrounded by this hot, super-charged plasma, the Earth's magnetic field protects it from the solar wind by deflecting the particles. ”
ALL the other planets but our earth are surrounded by that plasma. Luckily for us NOT, otherwise we were like inside a barbecue
It says ALL planets are surrounded… it does not state earth as an exception, only that the magnetic field serves to protect its atmosphere from becoming damaged by it.
Re: "Solar wind" is the term scientists use to describe the stream of part
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06 May 2023, 10:00
Midhilesh489 wrote:
Carcass wrote:
QUESTION 1
Since solar winds are directly related to geomagnetic storms, auroras, and comets, and cause comet tails to bend in particular directions, they play a significant role in the development of auroras and geomagnetic storms, thus supporting choice (B). The second paragraph states both that the Earth’s magnetic Field protects it from the solar winds, and that solar winds are responsible for the Earth’s magnetosphere, and changes in their speed and direction strongly influence Earth’s space environment, thus supporting choice (A). The First part of choice (C) is almost an exact reproduction of sentence 3, but that sentence doesn’t say anything about supercharged plasma.
Choice B said about earth, but in the passage it doesn't mention about earth
That’s what I concluded at first but later found that “geo” is a reference to earth.
Re: "Solar wind" is the term scientists use to describe the stream of part
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06 May 2023, 10:04
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Expert Reply
B. Solar winds play a significant role in the development of auroras and geomagnetic storms in the earth’s space environment.
However, solar winds are responsible for the Earth's magnetosphere, and changes in their speed and direction strongly influence Earth's space environment.
Basically the same sentence. YES we do have such information IN the passage. Therefore, B is true
Re: "Solar wind" is the term scientists use to describe the stream of part
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06 May 2023, 21:53
Werner wrote:
Midhilesh489 wrote:
Carcass wrote:
QUESTION 1
Since solar winds are directly related to geomagnetic storms, auroras, and comets, and cause comet tails to bend in particular directions, they play a significant role in the development of auroras and geomagnetic storms, thus supporting choice (B). The second paragraph states both that the Earth’s magnetic Field protects it from the solar winds, and that solar winds are responsible for the Earth’s magnetosphere, and changes in their speed and direction strongly influence Earth’s space environment, thus supporting choice (A). The First part of choice (C) is almost an exact reproduction of sentence 3, but that sentence doesn’t say anything about supercharged plasma.
Choice B said about earth, but in the passage it doesn't mention about earth
That’s what I concluded at first but later found that “geo” is a reference to earth.
Re: "Solar wind" is the term scientists use to describe the stream of part
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25 Aug 2023, 23:01
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summary: para 1: generic about solar winds para 2: its effects on planets
A1: (A) & (B) - present in last line of para 1 and 1st line of para 2 A2: (D) - divert solar winds A3: (A) - effect of solar winds on comets, auroras, etc
gmatclubot
Re: "Solar wind" is the term scientists use to describe the stream of part [#permalink]