Question 1

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

Question 2

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

Question 3

To pluck a nucleon from a nucleus requires

Accepted Answer

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

Question 4

The nucleus having the most tightly bound nucleons is

Accepted Answer

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

Question 5

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

Question 6

The nuclear process having by-products with least radioactivity is

Accepted Answer

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

Question 7

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

Question 8

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 
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 9

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

Question 10

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 
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 11

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

Question 12

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 
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 13

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

Question 14

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

Question 15

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 
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 16

Fissioning carbon would occur with

Accepted Answer

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

Question 17

The nucleus that has the least mass per nucleon is

Accepted Answer

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

Question 18

Electrical forces inside a nucleus contribute to nuclear

Accepted Answer

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

Question 19

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 
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 20

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

Exam 34: Nuclear Fission and Fusion

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

An element is changed into a completely different element in

To pluck a nucleon from a nucleus requires

The nucleus having the most tightly bound nucleons is

Early 21st Century research in nuclear fusion uses

The nuclear process having by-products with least radioactivity is

The function of graphite in the first atomic reactor was to

A nuclear power plant is very similar to

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

An important feature of the mass spectrometer is that

When two light atoms fuse together, mass

A mass spectrometer separates

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

Deuterium and tritium are both

Reactions that take place in a breeder reactor change

Fissioning carbon would occur with

The nucleus that has the least mass per nucleon is

Electrical forces inside a nucleus contribute to nuclear

The products of nuclear fission are radioactive due to their

Detonation of a fusion-type hydrogen bomb begins by

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Early 21^st Century research in nuclear fusion uses