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WorksheetsLife Cycle of a Star
Total questions: 33
Worksheet time: 17mins
Which comes first in stellar evolution?
stellar nebulae
planetary nebulae
protostar
white dwarf
True or False: Fusion happens in a protostar.
True
False
True or False: If fusion does not happen after a stellar nebulae collapses, a star does not form.
True
False
True or False: The life of a star is dependent upon the mass of the original star.
True
False
A protostar glows due to ___.
heat
fusion
A star spends the majority of its life as a _____.
protostar
main sequence star
white dwarf
neutron star
The majority of stars in space are ____.
main sequence stars
white dwarfs
brown dwarfs
neutron stars
Main sequence stars use ____ as fuel for nuclear fusion.
coal
hydrogen
helium
plasma
True or False: As long as the outward pressure from the core and the inward gravitational pull are equal, a star will maintain its size.
true
false
Select the options that are true for low mass stars
High temperature
Long life
Go supernova
Die as a white dwarf
Uses fuel slowly
A star that has high luminosity (brightness), releases ____ amounts of energy.
high
low
When the core of a star runs out of hydrogen, the star will ____ into its next stage
collapse
expand
explode
implode
Red Giants and Supergiants use ____ as fuel for fusion.
hydrogen
helium
The outer plasma shell a low mass star loses at the end of its life is a ___
stellar nebula
planetary nebula
white dwarf
supernova
The left over remains of a low mass star that has died is a ___.
brown dwarf
white dwarf
neutron star
black hole
To say a star has died. What must be true about the star? The star no longer ____.
is alive
has fusion in the core
produces light
exists in the sky
Which type of star might go supernova?
low mass star
high mass star
Which is more dense a white dwarf or a neutron star?
white dwarf
neutron star
Presently the most dense object in space with gravity so high that light cannot escape.
black hole
neutron star
supernova
white dwarf
What would be the color of a high energy star?
red
green
yellow
blue
The group of stars represented by the letter A are the...
giants
main sequence
supergiants
white dwarfs
The group of stars represented by the letter B are the...
giants
main sequence
supergiants
white dwarfs
The group of stars represented by the letter C are the...
giants
main sequence
supergiants
white dwarfs
The group of stars represented by the letter D are the...
giants
main sequence
supergiants
white dwarfs
Our current north star, Polaris, has a luminosity of 5,500 and a surface temperature of 5,400 Kelvin. What type of star is Polaris?
Giant
Main Sequence
Supergiant
White Dwarf
What type of star has a high luminosity and a low surface temperature?
Giant
Main Sequence
Supergiant
White Dwarf
What type of star has a low luminosity and a high surface temperature?
Giant
Main Sequence
Supergiant
White Dwarf
Which is hottest?
blue main sequence star
red main sequence star
yellow giant
red supergiant
Which star is the brightest?
blue main sequence star
red main sequence star
yellow giant
red supergiant
Why is a red supergiant more luminous than a red main sequence star?
The red supergiant is hotter.
The red supergiant has more surface area (is bigger).
Alpha Canis Majoris, has a luminosity of 0.02 and a surface temperature of 24,800 Kelvin. What type of star is Alpha Canis Majoris?
Giant
Main Sequence
Supergiant
White Dwarf
Sol, has a luminosity of 1 and a surface temperature of 5,800 Kelvin. What type of star is Sol?
Giant
Main Sequence
Supergiant
White Dwarf
What does it mean when a star has a luminosity is less than 1? For example Tau Centi is 0.4.
The star brighter than the sun.
The star is dimmer than the sun.
It takes less than 1 light year for the light to reach us.
The star is smaller than the sun.
