Which statement correctly explains how the Hertzsprung-Russell diagram helps to compare stars?(1 point)
Responses
The Sun's high temperature places it to the far left of the Hertzsprung-Russell diagram.
The Sun's high temperature places it to the far left of the Hertzsprung-Russell diagram.
The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
The Hertzsprung-Russell diagram plots stars according to their size and shape.
The Hertzsprung-Russell diagram plots stars according to their size and shape.
Stars with the highest temperatures appear towards the right side of the Hertzsprung-Russell diagram.
The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.
Use the diagram to answer the question.
A graph illustrates the relationship between the luminosity (Sun = 1), ranging from 0.0001 to 10000, and temperature in Kelvin, ranging from 30000 to 3000, for various stars classifications. Main sequence stars extend diagonally from the top left to the bottom right corner of the graph. The White Dwarfs, Giants, and Super Giants are placed on the graph according to their luminosity and temperature.
In which spectral class does a white dwarf with a temperature of 10,000 K belong?
(1 point)
Responses
F
F
A
A
O
O
B
A white dwarf with a temperature of 10,000 K belongs to the spectral class A.
Why are spectral lines useful in classifying stars?(1 point)
Responses
They show a star's location.
They show a star's location.
They show the composition of a star.
They show the composition of a star.
They indicate a star's age.
They indicate a star's age.
They show the layers that make up a star.
Spectral lines are useful in classifying stars because they show the composition of a star.
Which describe the study of spectroscopy? Select the two correct answers.(1 point)
Responses
emission and absorption of light
emission and absorption of light
reflection of light by Earth
reflection of light by Earth
the number of galaxies
the number of galaxies
interaction of light and atoms
The correct answers are:
1. Emission and absorption of light
4. Interaction of light and atoms
Select the correct answer from the list.(1 point)
As a star's size increases, its luminosity
. As a star's temperature
, its luminosity increases.
As a star's size increases, its luminosity increases.
As a star's temperature
, its luminosity increases.