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8.9A HR Diagram
By Mark Merrill
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Last updated about 6 hours ago
29 questions
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Use the following
interactive website
to explore how to classify stars using elements and the HR diagram.
Question 1
1.
What factor affects the color of a star?
Question 2
2.
What is the approximate surface temperature of the sun?
Question 3
3.
What color category is the sun?
Question 4
4.
Is the surface temperature of a white dwarf star higher or lower than red super giants?
Question 5
5.
What is the color of the stars with the highest surface temperature?
Question 6
6.
What is the color of the stars with the lowest surface temperature?
Question 7
7.
Most of the stars on the HR diagram are classified as which type of star?
Question 8
8.
What type of star has a high temperature but a low luminosity?
Question 9
9.
What type of star has a high temperature and a high luminosity?
Question 10
10.
What type of star has a low temperature but a high luminosity?
Question 11
11.
What color would a star be with a temperature of 6,000 K and a luminosity of 10
-1
?
Question 12
12.
What type would a star be with a temperature of 6,000 K and a luminosity of 10
-1
?
Question 13
13.
What color would a star be with a temperature of 20,000 K and a luminosity of 10
6
?
Question 14
14.
What type would a star be with a temperature of 20,000 K and a luminosity of 10
6
?
Question 15
15.
What color would a star be with a temperature of 20,000 K and a luminosity of 10
-2
?
Question 16
16.
What type would a star be with a temperature of 20,000 K and a luminosity of 10
-2
?
Question 17
17.
What color would a star be with a temperature of 2,500 K and a luminosity of 10
6
?
Question 18
18.
What type would a star be with a temperature of 2,500 K and a luminosity of 10
6
?
Question 19
19.
What color would a star be with a temperature of 4,000 K and a luminosity of 10
2
?
Question 20
20.
What type would a star be with a temperature of 4,000 K and a luminosity of 10
2
?
Question 21
21.
To which group do most of the stars belong?
Giants
Supergiants
Main sequence
White dwarfs
Question 22
22.
Compared to our sun, Rigel is
cooler and dimmer
cooler and brighter
hotter and dimmer
hotter and brighter
Question 23
23.
Compared to our sun, Betelgeuse is
cooler and dimmer
cooler and brighter
hotter and dimmer
hotter and brighter
Question 24
24.
Which star and its group are INCORRECT?
Sirius – main sequence
Aldebaran – giant
Polaris – supergiant
Rigel – white dwarf
Question 25
25.
Which star is most likely to be blue/white in color?
Betelgeuse
Sirius A
Sun
Alpha Centauri B
Question 26
26.
Where are stars "born"?
Question 27
27.
Which of the following components of the universe is best described as an interstellar cloud of dust and gases where stars can form?
A nebula
A planet
A meteor
A galaxy
Question 28
28.
A large celestial body made of gases that gives off light due to nuclear reactions is called-
a galaxy.
a nebula.
a comet.
a star.
Question 29
29.
Which of the following is the closest star to the Earth?
Proxima Centauri
the Sun
Sirius A
Barnard's
