Nuclear Fission and Nuclear Fusion Answers
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Which equation represents a fission reaction?
A
Option
B
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C
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D
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2
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Research into nuclear fusion will likely require a large investment of time and money before it might be used as an energy source. Which statement best describes the benefits that would make the investment worthwhile?
A
Fusion requires a large amount of energy and occurs in stars.B
Fusion produces large amounts of energy, and the fuel is found on Earth.C
Fusion produces no radioactive waste, and the fuel is plentiful.D
Fusion requires little energy to begin and would continue through a chain reaction.3
Which best describes nuclear fission?
A
A nucleus spontaneously splits and absorbs energy.B
Two nuclei spontaneously combine and absorb energy.C
A nucleus collides with a neutron and splits, releasing energy.D
Nuclei combine to form a heavier nucleus, releasing energy.4
Which best describes what forms in nuclear fusion?
A
two smaller, more stable nucleiB
two larger, less stable nucleiC
one smaller, less stable nucleusD
one larger, more stable nucleus5
Which is a characteristic of nuclear fusion but NOT nuclear fission?
A
releases large amounts of energyB
is the energy source of starsC
is used in electric power plantsD
requires little energy to occur6
Which statement is true about nuclear fusion?
A
It is caused by the same process that causes nuclear fission.B
It does not occur naturally in the solar system.C
It has very low activation energy.D
It produces nearly all the elements that are heavier than helium.7
Which statement is true about this reaction?
A
It is a practical source of energy on Earth.B
It occurs only outside the solar system.C
Its product is heavier than each of its reactants.D
It shows the critical mass of an element.8
Why is it important for scientists to replicate each other’s experiments?
A
to determine if important scientific results are repeatableB
to help the research of other scientistsC
to determine if slight alterations in the experiment can affect the resultD
to further their own research9
How does critical mass play a role in nuclear reactions?
A
It is the minimum amount of material needed to start a fission reaction.B
It is the minimum amount of material needed to start a fusion reaction.C
It is the minimum amount of material needed to sustain a fission reaction.D
It is the minimum amount of material needed to sustain a fusion reaction.10
Which type of reaction does this diagram represent?
A
nuclear fusion because nuclei combine to form a heavy nucleusB
nuclear fission because an atom is splitting into two large fragments of comparable massC
nuclear fusion because a large amount of energy is being releasedD
nuclear fission because the resulting products are not radioactiveDid you find these answers helpful?
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