Question 1

Generally speaking,the larger a nucleus is,the greater its

Accepted Answer

A) stability. 
B) instability. 
C) neither stability nor instability 
A) stability. 
B) instability. 
C) neither stability nor instability

Question 2

There is a greater proportion of carbon 14 in

Accepted Answer

A) new bones. 
B) old bones. 
C) same in each 
A) new bones. 
B) old bones. 
C) same in each

Question 3

The end result of radioactive decay can be a different

Accepted Answer

A) isotope. 
B) element. 
C) atom. 
D) all of these 
E) none of these 
A) isotope. 
B) element. 
C) atom. 
D) all of these 
E) none of these

Question 4

When a beta particle is ejected from a nucleus,the nucleus then has a greater

Accepted Answer

A) mass. 
B) charge. 
C) both of these 
D) neither of these 
A) mass. 
B) charge. 
C) both of these 
D) neither of these

Question 5

Radioactivity in the world is something

Accepted Answer

A) relatively new. 
B) as old as the world itself. 
A) relatively new. 
B) as old as the world itself.

Question 6

The half-life of an isotope is one day.At the end of two days the amount that remains is

Accepted Answer

A) none. 
B) one-half. 
C) one-quarter. 
D) one-eighth. 
E) none of these 
A) none. 
B) one-half. 
C) one-quarter. 
D) one-eighth. 
E) none of these

Question 7

A quark is

Accepted Answer

A) an elementary particle. 
B) a building block of nucleons. 
C) a building block of hadrons. 
D) all of these 
E) none of these 
A) an elementary particle. 
B) a building block of nucleons. 
C) a building block of hadrons. 
D) all of these 
E) none of these

Question 8

X-rays are similar to

Accepted Answer

A) alpha rays. 
B) beta rays. 
C) gamma rays. 
D) all of these 
E) none of these 
A) alpha rays. 
B) beta rays. 
C) gamma rays. 
D) all of these 
E) none of these

Question 9

Which experiences the greatest electrical force in an electric field?

Accepted Answer

A) alpha particle 
B) beta particle 
C) electron 
D) gamma ray 
E) All experience the same force. 
A) alpha particle 
B) beta particle 
C) electron 
D) gamma ray 
E) All experience the same force.

Question 10

An element will decay to an element with higher atomic number in the periodic table if it emits

Accepted Answer

A) a beta particle. 
B) a gamma ray. 
C) a proton. 
D) an alpha particle. 
E) none of these 
A) a beta particle. 
B) a gamma ray. 
C) a proton. 
D) an alpha particle. 
E) none of these

Question 11

When a nucleus emits a positron,its atomic number

Accepted Answer

A) increases by 1. 
B) decreases by 1. 
C) doesn't change. 
A) increases by 1. 
B) decreases by 1. 
C) doesn't change.

Question 12

The sources of X-rays and gamma rays,respectively,are

Accepted Answer

A) electron clouds and the atomic nucleus. 
B) the atomic nucleus and electron clouds. 
C) both electron clouds. 
D) both the atomic nucleus. 
E) none of these 
A) electron clouds and the atomic nucleus. 
B) the atomic nucleus and electron clouds. 
C) both electron clouds. 
D) both the atomic nucleus. 
E) none of these

Question 13

When the hydrogen isotope tritium-3 emits a beta particle,it becomes an isotope of

Accepted Answer

A) hydrogen. 
B) helium. 
C) lithium. 
D) carbon. 
E) none of these 
A) hydrogen. 
B) helium. 
C) lithium. 
D) carbon. 
E) none of these

Question 14

A device that could be used to give a positively charged particle enough kinetic energy to penetrate the nucleus of an atom is a

Accepted Answer

A) streamer chamber. 
B) spark chamber. 
C) bubble chamber. 
D) cloud chamber. 
E) None of the above choices are correct. 
A) streamer chamber. 
B) spark chamber. 
C) bubble chamber. 
D) cloud chamber. 
E) None of the above choices are correct.

Question 15

The amount of radiation we personally encounter that originates in the Earth's and the atmosphere's natural background is

Accepted Answer

A) a trace amount. 
B) about a quarter. 
C) about half. 
D) more than half. 
A) a trace amount. 
B) about a quarter. 
C) about half. 
D) more than half.

Question 16

Both X-rays and gamma rays are emitted from

Accepted Answer

A) different parts of the atom. 
B) a variety of certain atomic nuclei. 
A) different parts of the atom. 
B) a variety of certain atomic nuclei.

Question 17

A nucleon is either

Accepted Answer

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

Question 18

A magnetic field is applied to a cloud chamber to

Accepted Answer

A) attract electrons. 
B) repel electrons. 
C) attract protons. 
D) repel protons. 
E) None of the above choices are correct. 
A) attract electrons. 
B) repel electrons. 
C) attract protons. 
D) repel protons. 
E) None of the above choices are correct.

Question 19

A certain radioactive isotope placed near a Geiger counter registers 160 counts per second.Eight hours later,the counter registers 10 counts per second.What is the half-life of the isotope?

Accepted Answer

A) 8 hours 
B) 6 hours 
C) 4 hours 
D) 2 hours 
E) none of these 
A) 8 hours 
B) 6 hours 
C) 4 hours 
D) 2 hours 
E) none of these

Question 20

The mass of an atomic nucleon is nearly

Accepted Answer

A) twice the mass of an electron. 
B) four times the mass of an electron. 
C) a thousand times the mass of an electron. 
D) two thousand times the mass of an electron. 
A) twice the mass of an electron. 
B) four times the mass of an electron. 
C) a thousand times the mass of an electron. 
D) two thousand times the mass of an electron.

Exam 33: Atomic Nucleus and Radioactivity

Generally speaking,the larger a nucleus is,the greater its

There is a greater proportion of carbon 14 in

The end result of radioactive decay can be a different

When a beta particle is ejected from a nucleus,the nucleus then has a greater

Radioactivity in the world is something

The half-life of an isotope is one day.At the end of two days the amount that remains is

A quark is

X-rays are similar to

Which experiences the greatest electrical force in an electric field?

An element will decay to an element with higher atomic number in the periodic table if it emits

When a nucleus emits a positron,its atomic number

The sources of X-rays and gamma rays,respectively,are

When the hydrogen isotope tritium-3 emits a beta particle,it becomes an isotope of

A device that could be used to give a positively charged particle enough kinetic energy to penetrate the nucleus of an atom is a

The amount of radiation we personally encounter that originates in the Earth's and the atmosphere's natural background is

Both X-rays and gamma rays are emitted from

A nucleon is either

A magnetic field is applied to a cloud chamber to

A certain radioactive isotope placed near a Geiger counter registers 160 counts per second.Eight hours later,the counter registers 10 counts per second.What is the half-life of the isotope?

The mass of an atomic nucleon is nearly

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