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In the graph, each circle represents an individual star. The position

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Vubar
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In the graph, each circle represents an individual star. The position [#permalink] New post   Updated on: 29 Nov 2023, 00:19
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In the graph, each circle represents an individual star. The position of the circle’s center indicates the star’s temperature in kelvins (K) and its luminosity (rate of energy emission) relative to that of the sun (Lsun ). Note that higher temperatures are to the left. The size of the circle indicates the relative physical size of the star, and the labels indicate the types of stars shown.

Select from each of the drop-down menus the option that creates the most accurate statement based on the information provided.

1. If it is assumed that one of the stars on the graph represents the sun, it must be that the sun is a star.

2. Apart from the main sequence stars, the group of stars with the greatest range of temperatures is the group of

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Dropdown 1: main sequence Dropdown 2: white dwarfs

Originally posted by Vubar on 23 Feb 2022, 05:15.
Last edited by BottomJee on 29 Nov 2023, 00:19, edited 10 times in total.
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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   30 Sep 2022, 00:49
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Akmanoharan wrote:
Hi - what is the reasoning behind the correct answers?

Hi, sorry for the delayed reply!

For the first question:
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We know the sun must be a main sequence star, because the y axis shows us how bright the stars are compared to the sun. So the sun itself would have a value of 1, on the y-axis, and only main sequence stars have a value of 1 on the y axis.


For the second question:
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To see the range of temperatures, we are looking for the widest spread on the x axis. Main sequence is not included, so we are comparing the other groups. However, the x axis is not uniform (the furthest left side goes from 40,000 to 20,000 while the right side goes from 5000 to 2500). Because of this, we can see that the white dwarfs are spread across many thousands of degrees more than any other group (excluding the main sequence).


I hope that helps!
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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   23 Feb 2022, 08:38
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Hello Vubar

Please provide the answer options to the questions.
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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   24 Feb 2022, 08:52
Sajjad1994 wrote:
Hello Vubar

Please provide the answer options to the questions.

That's strange, I did include them in my original post...

The options for the first answer are: main sequence; red giant; red super giant

The second: red supergiants; red giants; blue giants; white dwarfs
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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   31 May 2022, 05:17
Hi - what is the reasoning behind the correct answers?
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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   11 Feb 2023, 18:04
Since the table is built around the SUN, the Sun appears on the Vertical access (Luminosity) at the "1" level.

By extension, if it's at the "middle" of the Luminosity Scale, then it's probably at the "middle" of the Temperature Scale.

Thus the Sun would probably be considered a "main sequence" star.

For the second question, "the group with the greatest RANGE of temperatures, aside from the main sequence stars" is the "white dwarfs" (since it's range is about 15,000K to a little less than 40,000K).
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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   28 Nov 2023, 06:01
I also chose these two answers, why it showed that my answers are incorrect?

IN2MBB2PE wrote:
Since the table is built around the SUN, the Sun appears on the Vertical access (Luminosity) at the "1" level.

By extension, if it's at the "middle" of the Luminosity Scale, then it's probably at the "middle" of the Temperature Scale.

Thus the Sun would probably be considered a "main sequence" star.

For the second question, "the group with the greatest RANGE of temperatures, aside from the main sequence stars" is the "white dwarfs" (since it's range is about 15,000K to a little less than 40,000K).
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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   29 Nov 2023, 00:21
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nazii wrote:
I also chose these two answers, why it showed that my answers are incorrect?

IN2MBB2PE wrote:
Since the table is built around the SUN, the Sun appears on the Vertical access (Luminosity) at the "1" level.

By extension, if it's at the "middle" of the Luminosity Scale, then it's probably at the "middle" of the Temperature Scale.

Thus the Sun would probably be considered a "main sequence" star.

For the second question, "the group with the greatest RANGE of temperatures, aside from the main sequence stars" is the "white dwarfs" (since it's range is about 15,000K to a little less than 40,000K).

Hi!
This issue has been corrected.
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In the graph, each circle represents an individual star. The position [#permalink] New post   16 Dec 2023, 21:54
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Akmanoharan wrote:
Hi - what is the reasoning behind the correct answers?


Video solution here (2:39):


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Re: In the graph, each circle represents an individual star. The position [#permalink] New post   14 Feb 2024, 05:40
gmatninja also solved this https://youtu.be/tE0_JvDsRqc?list=PLiaK ... puFb&t=962
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Re: In the graph, each circle represents an individual star. The position [#permalink]
14 Feb 2024, 05:40
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