Earth Science Geology, the Environment, and the Universe

Section 3: Stellar Evolution

Self-Check Quizzes-English

1
From what does a star form?
A)a main sequence
B)a spectrum
C)a binary
D)a nebula
2
Which factor helps determine the composition of a white dwarf?
A)the number of reactions it went through
B)the magnitude of its luminosity
C)the size of its planetary nebula
D)the size of the supernova
3
__________ is the combining of light weight nuclei into heavier nuclei, which gives off energy that fuels the Sun.
A)Radiation
B)Fusion
C)Division
D)Fission
4
At what point do nuclear reactions begin inside a protostar?
A)Enough mass has accumulated.
B)The temperature is high enough.
C)The protostar begins to spin fast.
D)The shape approximates a flattened disk.
5
During which part of a star's lifecycle are new elements added to the universe?
A)red giant
B)white dwarf
C)supernova
D)black hole
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