Question 1

When a gamma ray is emitted by a nucleus,the nucleus then has less

Accepted Answer

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

Question 2

The origin of cosmic rays is the

Accepted Answer

A) Earth. 
B) clouds. 
C) sun. 
D) cosmos. 
E) none of these 
A) Earth. 
B) clouds. 
C) sun. 
D) cosmos. 
E) none of these

Question 3

The half-life of carbon 14 is 5730 years.If a 1-gram sample of old carbon is 1/8 as radioactive as 1-gram of a current sample,then the age of the old sample is about

Accepted Answer

A) 716 years. 
B) 11,500 years. 
C) 17,200 years. 
D) 22,900 years. 
E) 46,000 years. 
A) 716 years. 
B) 11,500 years. 
C) 17,200 years. 
D) 22,900 years. 
E) 46,000 years.

Question 4

Artificially induced radioactive elements generally have

Accepted Answer

A) long half-lives. 
B) short half-lives. 
A) long half-lives. 
B) short half-lives.

Question 5

A certain radioactive isotope placed near a Geiger counter registers 120 counts per minute.If the half-life of the isotope is one day,what will the count rate be at the end of four days?

Accepted Answer

A) 30 counts/min 
B) 15 counts/min 
C) 10 counts/min 
D) 7)5 counts/min 
E) 5 counts/min 
A) 30 counts/min 
B) 15 counts/min 
C) 10 counts/min 
D) 7)5 counts/min 
E) 5 counts/min

Question 6

When an alpha particle is ejected from a nucleus,the nucleus then has less

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 7

Different isotopes of an element have different numbers of

Accepted Answer

A) protons. 
B) hadrons. 
C) photons. 
D) neutrons. 
E) none of these 
A) protons. 
B) hadrons. 
C) photons. 
D) neutrons. 
E) none of these

Question 8

Which experiences the least 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 9

X-rays may be regarded as

Accepted Answer

A) high frequency sound waves. 
B) high frequency radio waves. 
C) both of these 
D) none of these 
A) high frequency sound waves. 
B) high frequency radio waves. 
C) both of these 
D) none of these

Question 10

Carbon 14 is produced in the atmosphere principally by

Accepted Answer

A) plants and animals. 
B) cosmic-ray bombardment. 
C) nitrogen bombardment. 
D) photosynthesis. 
E) none of these 
A) plants and animals. 
B) cosmic-ray bombardment. 
C) nitrogen bombardment. 
D) photosynthesis. 
E) none of these

Question 11

An atom with an imbalance of electrons to protons is

Accepted Answer

A) a hadron. 
B) a baryon. 
C) an ion. 
D) an isotope. 
E) none of these 
A) a hadron. 
B) a baryon. 
C) an ion. 
D) an isotope. 
E) none of these

Question 12

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 13

Most of the radioactivity we personally encounter comes from

Accepted Answer

A) fallout from past and present testing of nuclear weapons. 
B) nuclear power plants. 
C) medical X rays. 
D) the natural environment. 
A) fallout from past and present testing of nuclear weapons. 
B) nuclear power plants. 
C) medical X rays. 
D) the natural environment.

Question 14

Pure elements can be transformed into entirely different elements.This statement at the present time is

Accepted Answer

A) True 
 B)False

Question 15

Which of the following isotopes is radioactive?

Accepted Answer

A) Carbon-12 
B) Carbon-14 
C) Both are radioactive. 
D) Neither is radioactive in nature. 
A) Carbon-12 
B) Carbon-14 
C) Both are radioactive. 
D) Neither is radioactive in nature.

Question 16

A sample of relatively active radioactive material is somewhat

Accepted Answer

A) warmer than the environment. 
B) cooler than the environment. 
C) neither really 
A) warmer than the environment. 
B) cooler than the environment. 
C) neither really

Question 17

A device that is used primarily to detect nuclear radiation is a

Accepted Answer

A) synchrotron. 
B) linear accelerator. 
C) cyclotron. 
D) All of the above choices are correct. 
E) None of the above choices are correct. 
A) synchrotron. 
B) linear accelerator. 
C) cyclotron. 
D) All of the above choices are correct. 
E) None of the above choices are correct.

Question 18

When a nucleus emits a beta particle,its atomic number

Accepted Answer

A) increases by 1. 
B) decreases by 1. 
C) increases by 2. 
D) decreases by 2. 
E) none of these 
A) increases by 1. 
B) decreases by 1. 
C) increases by 2. 
D) decreases by 2. 
E) none of these

Question 19

Which body is heated in its interior by nuclear processes?

Accepted Answer

A) the sun 
B) the Earth 
C) both 
D) neither 
A) the sun 
B) the Earth 
C) both 
D) neither

Question 20

If an alpha particle and a beta particle have the same energy,which particle will penetrate farther into an object?

Accepted Answer

A) alpha particle 
B) beta particle 
C) They both penetrate the same distance. 
A) alpha particle 
B) beta particle 
C) They both penetrate the same distance.

Exam 33: Atomic Nucleus and Radioactivity

When a gamma ray is emitted by a nucleus,the nucleus then has less

The origin of cosmic rays is the

The half-life of carbon 14 is 5730 years.If a 1-gram sample of old carbon is 1/8 as radioactive as 1-gram of a current sample,then the age of the old sample is about

Artificially induced radioactive elements generally have

A certain radioactive isotope placed near a Geiger counter registers 120 counts per minute.If the half-life of the isotope is one day,what will the count rate be at the end of four days?

When an alpha particle is ejected from a nucleus,the nucleus then has less

Different isotopes of an element have different numbers of

Which experiences the least electrical force in an electric field?

X-rays may be regarded as

Carbon 14 is produced in the atmosphere principally by

An atom with an imbalance of electrons to protons is

Deuterium and tritium are both

Most of the radioactivity we personally encounter comes from

Pure elements can be transformed into entirely different elements.This statement at the present time is

Which of the following isotopes is radioactive?

A sample of relatively active radioactive material is somewhat

A device that is used primarily to detect nuclear radiation is a

When a nucleus emits a beta particle,its atomic number

Which body is heated in its interior by nuclear processes?

If an alpha particle and a beta particle have the same energy,which particle will penetrate farther into an object?

About Science

Newtons First Law of Motion: Inertia

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Newtons Third Law of Motion: Action and Reaction

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Atomic Nature of Matter

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Temperature,heat,and Expansion

Heat Transfer

Change of Phase

Thermodynamics

Vibrations and Waves

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Musical Sounds

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Magnetism

Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

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The Atom and the Quantum

Nuclear Fission and Fusion

Special Theory of Relativity

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