Question 1

Slightly enriched uranium can be the energy source of which one or more of the following?

Accepted Answer

A) nuclear fission reactors 
B) nuclear fusion reactors 
C) nuclear weapons 
D) X-rays 
A) nuclear fission reactors 
B) nuclear fusion reactors 
C) nuclear weapons 
D) X-rays

Question 2

All known charged particles have electric charges that are multiples of $\pm$e except for

Accepted Answer

A) electrons. 
B) positrons. 
C) protons. 
D) quarks. 
A) electrons. 
B) positrons. 
C) protons. 
D) quarks.

Question 3

The hydrogen isotope,   , decays into the helium isotope   by emitting

Accepted Answer

A) an alpha particle. 
B) an electron. 
C) a positron. 
D) a gamma ray. 
A) an alpha particle. 
B) an electron. 
C) a positron. 
D) a gamma ray.

Question 4

The number of quarks in a proton or a neutron is

Accepted Answer

A) 1. 
B) 2. 
C) 3. 
D) 4. 
A) 1. 
B) 2. 
C) 3. 
D) 4.

Question 5

A possible fuel for fusion reactors is

Accepted Answer

A) ordinary hydrogen. 
B) deuterium. 
C) uranium. 
D) alpha particles. 
A) ordinary hydrogen. 
B) deuterium. 
C) uranium. 
D) alpha particles.

Question 6

The nucleus of an atom cannot be said to

Accepted Answer

A) contain most of the atom's mass. 
B) be small in size. 
C) be electrically neutral. 
D) deflect alpha particles that come near it. 
A) contain most of the atom's mass. 
B) be small in size. 
C) be electrically neutral. 
D) deflect alpha particles that come near it.

Question 7

After 10 years, 75 g of an original sample of 100 g of a certain radioactive isotope has decayed.The half-life of the isotope is

Accepted Answer

A) 5 years. 
B) 7.5 years. 
C) 20 years. 
D) 40 years. 
A) 5 years. 
B) 7.5 years. 
C) 20 years. 
D) 40 years.

Question 8

Which one or more of the following is not a unit of energy?

Accepted Answer

A) joule 
B) kilowatt 
C) ampere-hour 
D) electron volt 
E) Both B and C 
A) joule 
B) kilowatt 
C) ampere-hour 
D) electron volt 
E) Both B and C

Question 9

The number of protons in the nucleus   is

Accepted Answer

A) 7. 
B) 8. 
C) 15. 
D) 56. 
A) 7. 
B) 8. 
C) 15. 
D) 56.

Question 10

A particle never emitted in beta decay is the

Accepted Answer

A) neutron. 
B) neutrino. 
C) electron. 
D) positron. 
A) neutron. 
B) neutrino. 
C) electron. 
D) positron.

Question 11

The helium isotope   undergoes beta decay with the emission of an electron.The product of the decay is

Accepted Answer

A)    . 
B)    . 
C)    . 
D)    . 
A)    . 
B)    . 
C)    . 
D)    .

Question 12

When a nucleus of the copper isotope   emits a positron, it becomes

Accepted Answer

A)    . 
B)    . 
C)    . 
D)    . 
A)    . 
B)    . 
C)    . 
D)    .

Question 13

An atomic nucleus has a mass that is

Accepted Answer

A) less than the total mass of its constituent nucleons. 
B) the same as the total mass of its constituent nucleons. 
C) more than the total mass of its constituent nucleons. 
D) Any of theses choices could be correct, depending on the nucleus. 
A) less than the total mass of its constituent nucleons. 
B) the same as the total mass of its constituent nucleons. 
C) more than the total mass of its constituent nucleons. 
D) Any of theses choices could be correct, depending on the nucleus.

Question 14

The particle that most resembles the proton is the

Accepted Answer

A) positron. 
B) neutron. 
C) antiproton. 
D) quark. 
A) positron. 
B) neutron. 
C) antiproton. 
D) quark.

Question 15

Nuclear fission and fusion reactions give off energy because

Accepted Answer

A) the binding energy per nucleon is least for nuclei of intermediate size. 
B) the binding energy per nucleon is greatest for nuclei of intermediate size. 
C) they result in the production of neutrons. 
D) they result in the production of plutonium. 
A) the binding energy per nucleon is least for nuclei of intermediate size. 
B) the binding energy per nucleon is greatest for nuclei of intermediate size. 
C) they result in the production of neutrons. 
D) they result in the production of plutonium.

Question 16

Which one or more of the following statements is true in general?

Accepted Answer

A) Alpha particles are less able to penetrate matter than beta particles. 
B) Alpha particles are better able to penetrate matter than beta particles. 
C) Alpha particles are less able to penetrate matter than gamma rays. 
D) Alpha particles are better able to penetrate matter than gamma rays. 
E) Both A and C 
A) Alpha particles are less able to penetrate matter than beta particles. 
B) Alpha particles are better able to penetrate matter than beta particles. 
C) Alpha particles are less able to penetrate matter than gamma rays. 
D) Alpha particles are better able to penetrate matter than gamma rays. 
E) Both A and C

Slightly enriched uranium can be the energy source of which one or more of the following?

All known charged particles have electric charges that are multiples of $\pm$ e except for

The hydrogen isotope, , decays into the helium isotope by emitting

The number of quarks in a proton or a neutron is

A possible fuel for fusion reactors is

The nucleus of an atom cannot be said to

After 10 years, 75 g of an original sample of 100 g of a certain radioactive isotope has decayed.The half-life of the isotope is

Which one or more of the following is not a unit of energy?

The number of protons in the nucleus is

A particle never emitted in beta decay is the

The helium isotope undergoes beta decay with the emission of an electron.The product of the decay is

When a nucleus of the copper isotope emits a positron, it becomes

An atomic nucleus has a mass that is

The particle that most resembles the proton is the

Nuclear fission and fusion reactions give off energy because

Which one or more of the following statements is true in general?

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

Universe

Filters

Exam 8: The Nucleus

Slightly enriched uranium can be the energy source of which one or more of the following?

All known charged particles have electric charges that are multiples of ±\pm± e except for

The hydrogen isotope, , decays into the helium isotope by emitting

The number of quarks in a proton or a neutron is

A possible fuel for fusion reactors is

The nucleus of an atom cannot be said to

After 10 years, 75 g of an original sample of 100 g of a certain radioactive isotope has decayed.The half-life of the isotope is

Which one or more of the following is not a unit of energy?

The number of protons in the nucleus is

A particle never emitted in beta decay is the

The helium isotope undergoes beta decay with the emission of an electron.The product of the decay is

When a nucleus of the copper isotope emits a positron, it becomes

An atomic nucleus has a mass that is

The particle that most resembles the proton is the

Nuclear fission and fusion reactions give off energy because

Which one or more of the following statements is true in general?

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

Universe

Filters

All known charged particles have electric charges that are multiples of $\pm$ e except for