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Origin and Evolution of the Universe Answers

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After the supernova in a star’s life cycle, what else is formed in addition to a nebula?

A
red giant or protostar
B
neutron star or red giant
C
protostar or black hole
D
black hole or neutron star
2
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Which occurred before nucleosynthesis began? Check all that apply.

A
universe became transparent
B
quarks started to form
C
inflationary expansion occurred
D
electrons started to form
E
stars were born
3

Which shows the correct order of events during the process of nucleosynthesis?

A
hydrogen nucleus formed, isotope of hydrogen, tritium formed, helium nucleus formed
B
helium nucleus formed, hydrogen nucleus formed, isotope of hydrogen, tritium formed
C
hydrogen nucleus formed, helium nucleus formed, isotope of hydrogen, tritium formed
D
helium nucleus formed, isotope of hydrogen, tritium formed, hydrogen nucleus formed
4

Daniel observed and compared some stars at night and recorded his observations in a chart.Daniel later discovered that star X is farther away from Earth than the other stars he observed, and star Z is closest to Earth.

Question illustration
A
Star X is more luminous than both stars Y and Z.
B
Star X is more luminous than star Z, but not star Y.
C
Star Y is more luminous than star X.
D
Star Z is more luminous than star Y.
5

The presence of which element would indicate that a star is going through a high-mass star life cycle as opposed to a low-mass star life cycle?

A
hydrogen
B
carbon
C
helium
D
iron
6

What is the origin of all stars?

A
supernova
B
dwarfs
C
protostars
D
nebulae
7

Bethany and Joquin are discussing theories about the universe. Bethany believes that since the beginning of the universe, galaxies have been moving, and will continue to move, toward Earth. Joquin argues that galaxies have been moving away from Earth.

A
nucleosynthesis
B
cosmic microwave background radiation
C
composition of stars
D
redshift
8

The Hertzsprung-Russel diagram is used to show the relationship between which two characteristics of stars?

A
luminosity and temperature
B
mass and luminosity
C
temperature and mass
D
mass and color
10

Alana drew a diagram to compare the life cycles of low-mass and high-mass stars.

Question illustration
A
X: Nuclear fusion forms hydrogen in the main sequence star.Y: A white dwarf is part of the cycle.Z: A supernova is part of the cycle.
B
X: A white dwarf is part of the cycle.Y: Nuclear fusion forms hydrogen in the main sequence star.Z: A supernova is part of the cycle.
C
X: A protostar is part of the cycle.Y: It begins in a nebula.Z: nuclear fusion forms hydrogen in the main sequence star.
D
X: It begins in a nebula.Y: Nuclear fusion forms hydrogen in the main sequence star.Z: A protostar is part of the cycle.

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