Question 1

The nucleus having the most tightly bound nucleons is

Accepted Answer

A)  hydrogen.
B)  iron.
C)  lead.
D)  uranium.
E)  plutonium.

Question 2

When two light atoms fuse together, mass

Accepted Answer

A)  converts to kinetic energy.
B)  converts to high-energy gamma radiation.
C)  is created from energy of other forms.
D)  is gained.

Question 3

Deuterium and tritium are both

Accepted Answer

A)  forms of hydrogen.
B)  isotopes of the same element.
C)  both of these
D)  neither of these

Question 4

Reactions that take place in a breeder reactor change

Accepted Answer

A)  elements into different elements.
B)  molecules into different molecules.
C)  ions into different ions.
D)  all of the above
E)  none of the above

Question 5

Uranium-235, uranium-238 and uranium-239 are different

Accepted Answer

A)  elements.
B)  ions of the same element.
C)  isotopes of the same element.
D)  none of the above C

Question 6

To pluck a nucleon from a nucleus requires

Accepted Answer

A)  work.
B)  kinetic energy.
C)  potential energy.
D)  none of the above A

Question 7

An important feature of the mass spectrometer is that

Accepted Answer

A)  all ions enter the device at equal speeds.
B)  ions of different masses bend differently.
C)  the greater an ion's mass, the wider its circular arc.
D)  a magnetic field exerts forces on moving charged particles.
E)  all of the above

Question 8

Fissioning carbon would occur with

Accepted Answer

A)  absorption of energy.
B)  release of energy.
C)  neither of these

Question 9

The function of graphite in the first atomic reactor was to

Accepted Answer

A)  slow fast neutrons.
B)  emit fast neutrons.
C)  moderate uranium isotopes.
D)  none of the above

Question 10

When U-235 undergoes fission, the total number of protons in the fragments is

Accepted Answer

A)  90.
B)  91.
C)  92.
D)  93.
E)  none of the above

Question 11

A mass spectrometer separates

Accepted Answer

A)  ions of different elements.
B)  different-mass ions of the same element.
C)  different-mass ions of the same speed.
D)  all of the above
E)  none of the above

Question 12

A nuclear power plant is very similar to

Accepted Answer

A)  nuclear bombs, but with more control.
B)  any conventional power plant, but with uranium as fuel.
C)  a photovoltaic solar cell power plant.
D)  all of the above
E)  none of the above

Question 13

The nucleus that has the least mass per nucleon is

Accepted Answer

A)  hydrogen.
B)  iron.
C)  lead.
D)  uranium.
E)  plutonium.

Question 14

A chain reaction progresses when the average number of liberated neutrons that cause further fissions is

Accepted Answer

A)  zero.
B)  less than one.
C)  one or more.
D)  none of the above

Question 15

An element is changed into a completely different element in

Accepted Answer

A)  radioactive alpha decay.
B)  radioactive beta decay.
C)  nuclear fission.
D)  nuclear fusion.
E)  all of the above E

Question 16

Electrical forces inside a nucleus contribute to nuclear

Accepted Answer

A)  stability.
B)  instability.
C)  both of these
D)  neither of these

Question 17

The products of nuclear fission are radioactive due to their

Accepted Answer

A)  combustive natures.
B)  capacity to hold vast amounts of energy.
C)  greater neutron to proton ratio compared with stable nuclei in the same mass range.
D)  short half-lives.
E)  none of the above

Question 18

Early 21st Century research in nuclear fusion uses

Accepted Answer

A)  laser beams.
B)  ultra-hot plasmas.
C)  both of these
D)  neither of these

Question 19

Detonation of a fusion-type hydrogen bomb begins by

Accepted Answer

A)  splitting uranium.
B)  pressing together pieces of uranium.
C)  igniting a fission bomb.
D)  all of the above
E)  none of the above

Question 20

The nuclear process having by-products with least radioactivity is

Accepted Answer

A)  fission.
B)  fusion.
C)  about the same for both.

Exam 34: Nuclear Fission and Fusion

The nucleus having the most tightly bound nucleons is

Correct AnswerverifiedShow Answer

When two light atoms fuse together, mass

Correct AnswerverifiedShow Answer

Deuterium and tritium are both

Correct AnswerverifiedShow Answer

Reactions that take place in a breeder reactor change

Correct AnswerverifiedShow Answer

Uranium-235, uranium-238 and uranium-239 are different

Correct AnswerverifiedC

To pluck a nucleon from a nucleus requires

Correct AnswerverifiedA

An important feature of the mass spectrometer is that

Correct AnswerverifiedShow Answer

Fissioning carbon would occur with

Correct AnswerverifiedShow Answer

The function of graphite in the first atomic reactor was to

Correct AnswerverifiedShow Answer

When U-235 undergoes fission, the total number of protons in the fragments is

Correct AnswerverifiedShow Answer

A mass spectrometer separates

Correct AnswerverifiedShow Answer

A nuclear power plant is very similar to

Correct AnswerverifiedShow Answer

The nucleus that has the least mass per nucleon is

Correct AnswerverifiedShow Answer

A chain reaction progresses when the average number of liberated neutrons that cause further fissions is

Correct AnswerverifiedShow Answer

An element is changed into a completely different element in

Correct AnswerverifiedE

Electrical forces inside a nucleus contribute to nuclear

Correct AnswerverifiedShow Answer

The products of nuclear fission are radioactive due to their

Correct AnswerverifiedShow Answer

Early 21st Century research in nuclear fusion uses

Correct AnswerverifiedShow Answer

Detonation of a fusion-type hydrogen bomb begins by

Correct AnswerverifiedShow Answer

The nuclear process having by-products with least radioactivity is

Correct AnswerverifiedShow Answer

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C

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A

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E

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Early 21^st Century research in nuclear fusion uses

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