Astrophysics And Cosmology II - SS3 Physics Past Questions and Answers - page 2
11
What is the final stage in the life cycle of a high-mass star?
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A
White dwarf
B
Neutron star
C
Black hole
D
Red giant
E
Planetary nebula
12
What happens to a low-mass star after it becomes a red giant?
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A
It becomes a white dwarf
B
It explodes in a supernova
C
It collapses into a black hole
D
It becomes a neutron star
E
It sheds its outer layers and becomes a planetary nebula
14
What is the importance of stellar evaluation?
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15
Which of the following best describes the Big Bang theory?
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A
The universe is expanding, and it began as a single point of infinite density and temperature.
B
The universe is infinite and eternal and has always existed in its current state.
C
The universe is constantly oscillating between expansion and contraction.
D
The universe was created by a supreme being in a single instant.
16
Which of the following pieces of evidence supports the Big Bang theory?
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A
The cosmic microwave background radiation is observed to be uniformly distributed.
B
The abundance of light elements such as helium and hydrogen in the universe.
C
The observed redshift of galaxies in all directions.
D
All of the above.
17
Which of the following best describes dark matter?
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A
Matter made up of particles that interact with electromagnetic radiation.
B
Matter made up of particles that do not interact with electromagnetic radiation, but do interact gravitationally.
C
Matter that is undetectable by any means.
D
Matter that only exists in the space between galaxies.
18
What is the main source of energy for stars?
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A
Nuclear fusion reactions that convert hydrogen into helium.
B
Gravitational energy released as the star contracts.
C
Energy from the accretion of gas and dust in the early stages of the star's formation.
D
Chemical reactions between different elements in the star.
19
What is a supernova?
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A
A type of black hole that forms when a massive star collapses.
B
The explosion of a white dwarf star.
C
The explosion of a massive star that has run out of fuel and can no longer support its own weight.
D
A type of neutron star that emits intense bursts of radiation.
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