Question 1

In a smoke detector americium (A = 95)transmutes to neptunium (A = 93)by

Accepted Answer

A) beta emission. 
B) alpha emission. 
C) gamma emission. 
D) none of the above 
A) beta emission. 
B) alpha emission. 
C) gamma emission. 
D) none of the above

Question 2

When the nucleus of an atom emits a beta particle, the atom's atomic number

Accepted Answer

A) decreases. 
B) remains unchanged. 
C) increases. 
A) decreases. 
B) remains unchanged. 
C) increases.

Question 3

Which wavelengths are shortest?

Accepted Answer

A) light ray 
B) X-ray 
C) gamma ray 
A) light ray 
B) X-ray 
C) gamma ray

Question 4

When thorium (A = 90)emits a beta particle, the resulting nucleus has atomic number

Accepted Answer

A) 88. 
B) 89. 
C) 90. 
D) 92. 
E) none of the above 
A) 88. 
B) 89. 
C) 90. 
D) 92. 
E) none of the above

Question 5

In order for an atom to decay to an element that is one greater in atomic number, it can emit

Accepted Answer

A) one alpha particle and 3 beta particles. 
B) one positron and 2 beta particles. 
C) one beta particle. 
D) all of the above 
E) none of the above 
A) one alpha particle and 3 beta particles. 
B) one positron and 2 beta particles. 
C) one beta particle. 
D) all of the above 
E) none of the above

Question 6

Alpha particles and beta particles are deflected by a magnetic field in

Accepted Answer

A) opposite directions. 
B) perpendicular directions to each other. 
C) the same direction. 
A) opposite directions. 
B) perpendicular directions to each other. 
C) the same direction.

Question 7

When U-239 emits a beta particle, the resulting nucleus has

Accepted Answer

A) 90 protons. 
B) 91 protons. 
C) 92 protons. 
D) 93 protons. 
E) 94 protons. 
A) 90 protons. 
B) 91 protons. 
C) 92 protons. 
D) 93 protons. 
E) 94 protons.

Question 8

Carbon dating requires that the object being tested contain

Accepted Answer

A) organic material. 
B) inorganic material. 
C) charcoal. 
D) none of the above 
A) organic material. 
B) inorganic material. 
C) charcoal. 
D) none of the above

Question 9

The sources of both X-rays and gamma rays are

Accepted Answer

A) electron clouds. 
B) the atomic nucleus. 
C) both of these 
D) neither of these 
A) electron clouds. 
B) the atomic nucleus. 
C) both of these 
D) neither of these

Question 10

A nucleon is either a

Accepted Answer

A) positron or an electron. 
B) proton or an electron. 
C) neutron or an electron. 
D) proton or a neutron. 
A) positron or an electron. 
B) proton or an electron. 
C) neutron or an electron. 
D) proton or a neutron.

Question 11

The sources of X-rays are

Accepted Answer

A) electron clouds. 
B) the atomic nucleus. 
C) both of these 
D) neither of these 
A) electron clouds. 
B) the atomic nucleus. 
C) both of these 
D) neither of these

Question 12

All deposits of natural uranium contain appreciable amounts of

Accepted Answer

A) iron. 
B) lead. 
C) gold. 
D) all of the above 
E) none of the above 
A) iron. 
B) lead. 
C) gold. 
D) all of the above 
E) none of the above

Question 13

A device that shows the bending of particle trails in liquid hydrogen is a

Accepted Answer

A) streamer chamber. 
B) spark chamber. 
C) bubble chamber. 
D) all of the above 
E) none of the above 
A) streamer chamber. 
B) spark chamber. 
C) bubble chamber. 
D) all of the above 
E) none of the above

Question 14

In 1919 Rutherford performed the first historic artificial transmutations of

Accepted Answer

A) hydrogen to helium. 
B) nitrogen to oxygen. 
C) carbon 12 to carbon 14. 
D) none of the above 
A) hydrogen to helium. 
B) nitrogen to oxygen. 
C) carbon 12 to carbon 14. 
D) none of the above

Question 15

The high temperature of Earth's interior is mainly due to

Accepted Answer

A) great internal pressure. 
B) friction, as plates move past one another. 
C) the Earth's natural heat. 
D) radioactive processes. 
A) great internal pressure. 
B) friction, as plates move past one another. 
C) the Earth's natural heat. 
D) radioactive processes.

Question 16

Radiation dosages based on potential damage is in

Accepted Answer

A) rads. 
B) rems. 
C) joules. 
D) none of the above 
A) rads. 
B) rems. 
C) joules. 
D) none of the above

Question 17

Which is heated in its interior by nuclear processes?

Accepted Answer

A) Sun 
B) Earth 
C) both of these 
D) neither of these 
A) Sun 
B) Earth 
C) both of these 
D) neither of these

Question 18

Which will NOT bend when moving in a magnetic field?

Accepted Answer

A) alpha particle 
B) beta particle 
C) gamma ray 
D) all bend the same 
A) alpha particle 
B) beta particle 
C) gamma ray 
D) all bend the same

Question 19

Radium (A = 88)transmutes to radon (A = 86)by

Accepted Answer

A) beta emission. 
B) alpha emission. 
C) gamma emission. 
D) none of the above 
A) beta emission. 
B) alpha emission. 
C) gamma emission. 
D) none of the above

Question 20

The half-life of a radioactive substance is affected by

Accepted Answer

A) pressure. 
B) temperature. 
C) age. 
D) all of the above 
E) none of the above 
A) pressure. 
B) temperature. 
C) age. 
D) all of the above 
E) none of the above

Exam 33: Atomic Nucleus and Radioactivity

In a smoke detector americium (A = 95)transmutes to neptunium (A = 93)by

When the nucleus of an atom emits a beta particle, the atom's atomic number

Which wavelengths are shortest?

When thorium (A = 90)emits a beta particle, the resulting nucleus has atomic number

In order for an atom to decay to an element that is one greater in atomic number, it can emit

Alpha particles and beta particles are deflected by a magnetic field in

When U-239 emits a beta particle, the resulting nucleus has

Carbon dating requires that the object being tested contain

The sources of both X-rays and gamma rays are

A nucleon is either a

The sources of X-rays are

All deposits of natural uranium contain appreciable amounts of

A device that shows the bending of particle trails in liquid hydrogen is a

In 1919 Rutherford performed the first historic artificial transmutations of

The high temperature of Earth's interior is mainly due to

Radiation dosages based on potential damage is in

Which is heated in its interior by nuclear processes?

Which will NOT bend when moving in a magnetic field?

Radium (A = 88)transmutes to radon (A = 86)by

The half-life of a radioactive substance is affected by

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