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WorksheetsStars and HR Diagram Review S.C.8.E.5.5
Total questions: 37
Worksheet time: 28mins
The graph shows the relative sizes and surface temperatures of four groups of stars. The surface temperature of the stars is measured in Kelvin (K). The Sun is part of the main sequence group.
According to the graph, the Sun is best described as…
Massive sized, with a surface temperature of approximately 20,000 K.
Massive sized, with a surface temperature of approximately 10,000 K.
Average sized, with a surface temperature of approximately 8,000 K.
Average sized, with a surface temperature of approximately 6,000 K.
Astronomers often compare the colors of stars. Knowing the color of a star is most useful in determining…
the number of planets orbiting a star.
the temperature of the star.
the size of the star.
the distance to the star from Earth.
Which of the following is TRUE about red supergiant stars?
Red supergiants have a high surface temperature and a low absolute brightness.
Red supergiants have a low surface temperature and low absolute brightness.
Red supergiants have a high surface temperature and high absolute brightness.
Red supergiants have a low surface temperature and high absolute brightness.
What does a star's color tell about a star?
Temperature
Distance
Brightness
Position
Stars that are really hot have the color.....
Red
Yellow
Blue
Orange
What are the colors of cooler stars?
Red
Blue
White
Yellow
List the color of the stars from coldest to hottest.
blue, white, yellow, orange, red
red, white, blue, orange, yellow
red, orange, yellow, white, blue
red, yellow, orange, white, blue
All of the following are correct about main sequence stars EXCEPT?
White dwarfs are apart of the main sequence stars.
Many, if not most, of the main sequence stars can be seen from Earth.
They are made up of hydrogen and helium.
The hotter the star gets, the brighter it gets.
In comparison to other stars in the sky, the Sun appears brighter because it is–
bigger
closer
smaller
further
The term used for how bright a star appears from Earth. A dim star may appear bright because it is closer to Earth.
Apparent Magnitude
Absolute Brightness
Apparent Distance
Absolute Position
The actual brightness of a star when the stars are lined up and the same distance from Earth.
Apparent Magnitude
Absolute Brightness
Absolute Distance
Apparent Position
One physical property of a star is apparent magnitude. Which of the following is used in determining the apparent magnitude of a star?
the constellation the star is in
the number of times the star rotates
the distance the star is from Earth
the number of prominences the star makes
Two astrologists are studying the stars. They find two stars with one star being red in color and the other being white in color. Why would the two stars be differing in color?
The red star must be hotter than the white star.
The red star is rotating faster than the white star.
The white star is closer than the red star.
The white star must be hotter than then red star.
Apparent magnitude does NOT look at........
the distance the star is from Earth.
the brightness of the star.
the star's temperature.
other stars that look dim but are actually brighter because they are further away from Earth.
What star has high absolute brightness and high surface temperature?
Red Supergiants
Blue Giants
White Dwarfs
Red Giants
Which of the following stars are the hottest?
Red Supergiants
Blue Giants
White Dwarfs
Yellow Dwarfs
What star has high absolute brightness and low surface temperature?
Red Supergiants
Blue Giants
White Dwarfs
Red Giants
What star has low absolute brightness and high surface temperature?
Red Supergiants
Blue Giants
White Dwarfs
Red Giants
Which of the following stars are the coolest?
Red Supergiants
Blue Giants
White Dwarfs
Yellow Dwarfs
As stars age in their lifecycle, they
get cooler and dimmer.
get hotter and dimmer.
get hotter and brighter.
stay the same temperature and get brighter.
How do blue giants compare to white dwarf stars?
blue giants and white dwarf stars both have high temperatures but blue giants have a higher absolute brightness.
blue giants and white dwarf stars both have low temperatures but blue giants have a higher absolute brightness.
blue giants and white dwarf stars both have high temperatures but white dwarfs have a higher absolute brightness.
blue giants and white dwarf stars both have low temperatures but white dwarfs have a higher absolute brightness.
Most of the stars are apart of which group?
Blue giants
White dwarfs
Red giants
Main sequence
Put the stars in order from HOTTEST to COLDEST
Blue
White
Yellow
Orange
Red
What is the best way to study the universe along with all the galaxies and stars in it?
A computer model that will change with new discoveries.
A physical model showing the massive size of the universe.
A map in which the galaxies and stars will be plotted.
A graph showing how big the galaxies are.
For most stars, what does a higher temperature tend to go with?
lower brightness
red color
higher brightness
none of the above
Which of the following stars would be hotter than our sun?
Red giants
Red supergiants
Blue Giants
Why can the apparent magnitude be inaccurate?
It doesn't exist
the scale is messed up
It only shows the brightness of stars too far away for humans to detect
It may not be brighter compared to another star but instead just closer
A very bright star can seem to be dimmer because it is
further away
very close
cooler in temperature
lower in brightness
Stars on the upper left end of the main sequence differ from those on the lower right end in what way?
Stars on the upper left are less bright.
Stars on the upper left are cooler.
Stars on the upper left are hotter.
Stars on the upper left are beginning their lifecycle.
The H-R Diagram determines the __________ and __________ of stars.
temperature, distance
distance, mass
temperature, brightness
mass, brightness
Stars located at the top left of the H-R Diagram are _______ & ______.
hot, bright
cool, dim
cool, bright
hot, dim
Which type of star is known for having a high surface temperature and low absolute brightness?
White Dwarfs
Red Supergiants
Red Giants
Blue Giants
Which statement correctly describes the relationship between galaxies and stars?
A galaxy contains only one star.
A star is made up of a single galaxy.
A star contains many galaxies.
A galaxy contains many stars.
The Triangulum Galaxy is a spiral galaxy similar in size to the Milky Way Galaxy. It is located about 2.7 million light-years from Earth.
Which explanation best accounts for why these two galaxies have similar physical properties?
All stars in both galaxies are at the same stage of their life cycle as the Sun.
Both galaxies formed from the same materials and in the same way.
Both galaxies orbit around the same central star.
The stars within each galaxy have similar temperatures and identical lifespans.
Which statement does NOT accurately describe main sequence stars?
Main sequence stars are primarily composed of hydrogen and helium.
As a star’s surface temperature increases, its absolute brightness generally increases.
Most stars visible from Earth are main sequence stars.
Red giant stars are classified as part of the main sequence.
Which statement explains a limitation of using apparent magnitude instead of absolute brightness?
Apparent magnitude does not account for differences in distance between stars and Earth.
Apparent magnitude does not provide information about a star’s color or temperature.
Apparent magnitude cannot be used to directly measure the energy output of a star.
Apparent magnitude only compares how bright a star appears from a distance of 32 light-years.
Which of the following statements is true regarding red supergiant stars?
Red supergiant stars have low surface temperatures and low absolute brightness.
Red supergiant stars have low surface temperatures and high absolute brightness.
Red supergiant stars have high surface temperatures and low absolute brightness.
Red supergiant stars have high surface temperatures and high absolute brightness.
