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Graded Assignment - Type-In Name: Date: Physical Science | Graded Assignment | HR Diagrams © 2015 K12 Inc. All rights reserved.Page 1 of 1 Copying or distributing without K12’s written consent is...

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Graded Assignment - Type-In
Name:
Date:
Physical Science | Graded Assignment | HR Diagrams
© 2015 K12 Inc. All rights reserved.    Page 1 of 1
Copying or distributing without K12’s written consent is prohibited.
Graded Assignment
HR Diagrams Questions
Answer the following questions after you have completed the HR Plot. Use complete sentences and submit this file for grading.
How does our sun compare to other stars in terms of
ightness and temperature?
Answer:
Type your answer here.
Explain any patterns or trends displayed by the Group 1 stars.
Answer:
Type your answer here.
Which group of stars represents the Main Sequence? How do you know this?
Answer:
Type your answer here.
Group 2 and Group 3 stars represent which stages of development? Describe these groups in terms of their relative age, size,
ightness, and temperature.
Answer:
Type your answer here.
What determines if a star will end its life as a neutron star, a white dwarf, or a black hole?
Answer:
Type your answer here.

Graded Assignment - Type-In
Name:
Date:
Physical Science | Graded Assignment | Project: HR Diagrams
© 2015 K12 Inc. All rights reserved.    Page 3 of 3
Copying or distributing without K12’s written consent is prohibited.
Graded Assignment
Project: HR Diagrams
Directions: Three data tables follow. Each table gives some information on groups of stars. Following these data data tables is a blank HR plot. Use the data from the data tables to create the HR plot.
Print this document. You should have three data tables and one blank HR plot.
Enter the Group 1 stars on the HR plot. Remember that HR diagrams plot temperature on the X axis and luminosity on the Y axis. You will plot only these values from the data tables. Draw a dot on the plot for each star in Group 1. Draw a circle around all the dots you drew for Group 1 and label it Group 1.
Enter the Group 2 stars on the same HR plot. Draw a square around all the dots you drew for Group 2 and label it Group 2.
Enter the Group 3 stars on the same HR plot. Draw a circle around all the dots you drew for Group 3 and label it Group 3.
    Star Numbe
    Group 1
    Visual Magnitude (Apparent)
    Distance (Light Years)
    Temperature (Kelvin)
    Luminosity (Sun = 1) (Absolute)
    *1
    Sun
    -26.7
    0.00002
    5,800
    1.00
    *2
    Alpha Centauri A
    -0.01
    4.3
    5,800
    1.5
    *3
    Alpha Centauri B
    +1.4
    4.3
    4,200
    0.33
    *4
    Alpha Centauri C
    +11.0
    4.3
    2,800
    0.0001
    *5
    Wolf 359
    +13.66
    7.7
    2,700
    0.00003
    *6
    Lalande 21185
    +7.47
    8.1
    3,200
    0.0055
    *7
    Sirius A
    -1.43
    8.7
    10,400
    23.0
    *8
    Luyten 726-8 A
    +12.5
    8.7
    2,700
    0.00006
    *9
    Luyten 726-8 B
    +12.9
    8.7
    2,700
    0.00002
    *10
    Ross 154
    +10.6
    9.6
    2,800
    0.00041
    *11
    Ross 248
    +12.24
    10.3
    2,700
    0.00011
    *12
    Epsilon Eridani
    +3.73
    10.8
    4,500
    0.30
    *13
    Ross 128
    +11.13
    11.0
    2,800
    0.00054
    *14
    61 Cygni A
    +5.19
    11.1
    4,200
    0.084
    Star Numbe
    Group 2
    Visual Magnitude (Apparent)
    Distance (Light Years)
    Temperature (Kelvin)
    Luminosity (Sun = 1) (Absolute)
    *28
    Arcturus
    -0.06
    36.0
    4,500
    110.0
    *29
    Betelgeuse
    +0.41
    500.0
    3,200
    17,000.0
    *30
    Aldebaran
    +0.86
    53.0
    4,200
    100.0
    *31
    Antares
    +0.92
    400.0
    3,400
    5,000.0
    *32
    Delta Aquarii B
    +2.86
    1,030.0
    6,000
    4,300.0
    Star Numbe
    Group 3
    Visual Magnitude (Apparent)
    Distance (Light Years)
    Temperature (Kelvin)
    Luminosity (Sun = 1) (Absolute)
    *33
    Sirius B
    +8.5
    8.7
    10,700
    0.0024
    *34
    Procyon B
    +10.7
    11.3
    7,400
    0.00055
    *35
    Grw XXXXXXXXXX
    +13.19
    49
    9,800
    0.0013
    *36
    L 879-14
    +14.10
    63?
    6,300
    0.00068
    *37
    Van Maanen’s Sta
    +12.36
    14
    7,500
    0.00016
    *38
    W 219
    +15.20
    46
    7,400
    0.00021
    *39
    Barnard’s Sta
    +9.54
    6.0
    2,800
    0.00045
    *40
    Luyten 789-6
    +12.58
    11.0
    2,700
    0.00009
    *41
    Canopus
    -0.72
    100.0
    7,400
    1,500.0
    *42
    Capella
    +0.05
    47.0
    5,900
    170.0
    *43
    Rigel
    +0.14
    800.0
    11,800
    40,000.0
    *44
    Alpha Crucis
    +1.39
    400.0
    21,000
    4,000.0
    *45
    Fomalhaut
    +1.19
    23.0
    9,500
    14.0
    *46
    Dene
    +1.26
    1,400.0
    9,900
    60,000.0
    *47
    Beta Crucis
    +1.28
    500.0
    22,000
    6,000.0
Answered Same DaySep 06, 2021

Solution

Yasodharan answered on Sep 09 2021
48 Votes
Graded Assignment - Type-In
Physical Science | Graded Assignment | HR Diagrams
HR Plot as below,
1. The luminosity of sun is taken as reference point with absolute value (=1) which will be used as reference point to compare with existing different stars in our universe and far beyond by using their luminous capacity. Hence by comparing with other stars from different group sun resembles center point and having balanced luminosity to support existence of life forms.
2. Group 1 stars are having luminosity equal to sun by maximum as most of the stars in the group are and its temperature are within the range and we can confirm of these stars are near to sun. In addition, the temperature range of 2500-7000 K range is giving us a clue of life existence in other planets using stars similar to sun as their core of existence, based on plot we can conclude hypothetically there will be around 10-12 another solar system with chance of life existing planets similar to earth. The hypothetic assumption of life existence gives us no clue of type of life form, environment and whether we will be able to...
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