Which of these phrases describes the sun?(1 point)
Responses
Class G yellow star
Class G yellow star
Class A white star
Class A white star
Class M red star
Class M red star
Class O blue star
11 answers
Class G yellow star
How is the sun classified on an Hertzsprung-Russell Diagram?(1 point)
Responses
as a giant star
as a giant star
as a main sequence star
as a main sequence star
as a white dwarf star
as a white dwarf star
as a supergiant star
Responses
as a giant star
as a giant star
as a main sequence star
as a main sequence star
as a white dwarf star
as a white dwarf star
as a supergiant star
as a main sequence star
Star Types Quick Check
3 of 63 of 6 Items
Question
Use the diagram to answer the question.
The Hertzsprung-Russell Diagram shows the spectral class of stars across the top, the temperature in Kellvin of stars across the bottom. The luminosity of stars, with the luminosity of the Sun equal to one, on the right, and the absolute magnitude of stars on the right. Blue giants, red supergiants, red giants, main sequence stars, the Sun, and white dwarfs are shown on the diagram.
Which type of star is in spectral class K and has a luminosity of 106?
(1 point)
Responses
red supergiant
red supergiant
red giant
red giant
white dwarf
white dwarf
blue giant
3 of 63 of 6 Items
Question
Use the diagram to answer the question.
The Hertzsprung-Russell Diagram shows the spectral class of stars across the top, the temperature in Kellvin of stars across the bottom. The luminosity of stars, with the luminosity of the Sun equal to one, on the right, and the absolute magnitude of stars on the right. Blue giants, red supergiants, red giants, main sequence stars, the Sun, and white dwarfs are shown on the diagram.
Which type of star is in spectral class K and has a luminosity of 106?
(1 point)
Responses
red supergiant
red supergiant
red giant
red giant
white dwarf
white dwarf
blue giant
red giant
Which of these properties is the best measure of a star's brightness?(1 point)
Responses
age
age
size
size
apparent magnitude
apparent magnitude
absolute magnitude
Responses
age
age
size
size
apparent magnitude
apparent magnitude
absolute magnitude
apparent magnitude
Which spectral class does a star fit into if it has a surface temperature of 20,000 K?
(1 point)
Responses
A
A
M
M
G
G
B
(1 point)
Responses
A
A
M
M
G
G
B
B
Which piece of spectral data is necessary to determine the spectral class of a star?
(1 point)
Responses
apparent magnitude
apparent magnitude
temperature
temperature
absolute magnitude
absolute magnitude
luminosity
(1 point)
Responses
apparent magnitude
apparent magnitude
temperature
temperature
absolute magnitude
absolute magnitude
luminosity
temperature
6 answers