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WorksheetsStar Unit Test Review
Total questions: 35
Worksheet time: 1hrs 10mins
What stage of stellar evolution is labeled A?
planetary nebula
supernova
nebula
black hole
What stage of stellar evolution is labeled B?
nebula
protostar
red supergiant
black hole
What stage of stellar evolution is labeled C?
supernova
red supergiant
main sequence star
black hole
What stage of stellar evolution is labeled D?
main sequence star
neutron star
protostar
red supergiant
What stage of stellar evolution is labeled E?
supernova
nebula
protostar
neutron star
What stage of stellar evolution is labeled F?
neutron star
supernova
nebula
black hole
What stage of stellar evolution is labeled G?
black hole
neutron star
protostar
red supergiant
What stage of stellar evolution is labeled A?
protostar
red giant
nebula
planetary nebula
What stage of stellar evolution is labeled B?
nebula
red giant
white dwarf
protostar
What stage of stellar evolution is labeled C?
red giant
planetary nebula
main sequence star
black dwarf
What stage of stellar evolution is labeled D?
planetary nebula
black dwarf
white dwarf
red giant
What stage of stellar evolution is labeled E?
nebula
planetary nebula
protostar
white dwarf
What stage of stellar evolution is labeled F?
black dwarf
white dwarf
red giant
protostar
What stage of stellar evolution is labeled G?
white dwarf
black dwarf
protostar
main sequence star
The apparent movement of a star when seen from a different position is called
a light-year.
parallax.
a constellation.
apparent brightness.
The universe contains billions of galaxies. The largest galaxies contain a trillion stars. What holds each galaxy together?
gravity
our sun
star clusters
infrared radiation
Which factors affect the force of gravity between two objects?
location on Earth and weight of the two objects
weight and distance between the two objects
mass and distance between the two objects
weight and mass of the two objects
Which of the following statements is true?
Our sun is brighter and cooler than Alpha Centauri B.
Our sun is brighter and hotter than Alpha Centauri B.
Alpha Centauri B is brighter and cooler than our sun.
Alpha Centauri B is brighter and hotter than our sun.
The Sun is categorized as which type of star?
giant
supergiant
white dwarf
main sequence
A light-year is
a star’s absolute brightness compared with our sun’s.
a measure of speed.
the distance light travels in a year.
the distance from Earth to the sun.main sequence
When extremely massive stars begin to run out of fuel, they first become
red giants
red supergiants
supernovas
planetary nebulae
The two main types of objects created by supernovae are ___
neutron stars and pulsars
magnetars and black holes
pulsars and magnetars
neutron stars and black holes
What conclusions can you draw about the length of the lifespan of a tiny red star?
It will live considerably longer than our sun.
It will live a considerably shorter life than our sun.
It will have the same lifespan as our sun.
The size of the star will not affect its lifespan.
Currently, the Sun is fusing ___
hydrogen into helium
helium into hydrogen
helium into carbon
hydrogen into carbon
In order for a supernova to occur, a star must be at least _____ times as large as our sun.
2
8
15
20
Why doesn't the sun collapse under its own gravity?
The gravity caused by the sun's mass isn't strong enough to collapse it.
The sun is creating more matter which causes it to get bigger.
The energy from the nuclear fusion reaction keeps the the sun from collapsing.
It is too large to collapse, all of the matter is as close as it can be.
What type of star is most likely to form a black hole?
Red Dwarf
Yellow Main Sequence
Neutron Star
Blue Supergiant
How can you tell what a star will become at the end of it's life?
It's initial mass
It's color
It's temperature
It's luminosity
What will our sun become at the end of it's life?
A white dwarf
A black hole
A red giant
A neutron star
What happens to a star as it ages?
It's rate of rotation, color, and temperature change.
It's temperature and the number of planets that rotate it changes.
The amount of solar wind it gives off changes.
It's temperature, luminosity, and mass changes.
Which type of stars go through their evolutionary stages the fastest?
Small and hot
small and cool
massive and hot
massive and cool
When a star's outer shell of gas expands and changes color, what type of star does it become?
A neutron star
A Supernova
A red giant
A white dwarf
This stage lasts the longest, therefore 90% of stars are in this stage.
White dwarf
Main sequence
Red giant
Black hole
At the end of it's life a high mass star will most likely end up as a
red giant
black hole
white dwarf
neutron star
What causes stars to change between phases
Their size
Their planets
Changes in their fuel source
How close they are to other stars
