Lesson 6.6 Life Cycle of Stars Answers

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How do spectrographs help astronomers classify stars?

A
They determine the size of stars.
B
They evaluate the color of stars.
C
They measure the brightness of stars.
D
They analyze the composition of stars.
22
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Which object is created during the formation of a star?

A
a nebula
B
a protostar
C
a supergiant
D
a supernova
23

What causes a star to shine brightly?

A
the color that is produced
B
the energy that is released
C
the amount of gravity that is present
D
the types of elements that are present
24

Some objects in space are created from clouds of gas and dust.What will happen if the cloud does not have enough mass?

A
A core will form.
B
A star will not form.
C
A protostar will form.
D
A nebula will not form.
26

Which object forms when a supergiant explodes?

A
a red giant
B
a protostar
C
a white dwarf
D
a neutron star
27

What is the initial stage of all stars?

A
nebula
B
black hole
C
supernova
D
white dwarf
28

What is the Sun classified as on the Hertzsprung-Russell diagram?

A
red giant
B
supergiant
C
white dwarf
D
main sequence star

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Lesson 6.6 Life Cycle of Stars Answers…