Question 1

Cosmic radiation occurs in which two forms?

Accepted Answer

A)  Solar and manmade
B)  Artificial and galactic
C)  Natural background and artificial
D)  Solar and galactic

Question 2

The first decay product of radium is

Accepted Answer

A)  cesium.
B)  radon.
C)  strontium.
D)  x-ray.

Question 3

Which of the following helps shield the global population from exposure to essentially all high-energy,bombarding cosmic rays?

Accepted Answer

A)  Clouds
B)  Fog
C)  Atmosphere and magnetic field of the Earth
D)  Smog C

Question 4

Which of the following are forms of electromagnetic radiation?
1) Microwaves
2) Visible light
3) X-rays
4) Gamma rays
5) Ultraviolet radiation

Accepted Answer

A)  1,2,and 3 only
B)  2,3,and 4 only
C)  3,4,and 5 only
D)  1,2,3,4,and 5

Question 5

In the electromagnetic spectrum,higher frequencies are associated with

Accepted Answer

A)  longer wavelengths and lower energies.
B)  longer wavelengths and higher energies.
C)  shorter wavelengths and lower energies.
D)  shorter wavelengths and higher energies.

Question 6

What is the most common unit of measure of equivalent dose?

Accepted Answer

A)  Coulomb per kilogram
B)  Milligray
C)  Millisievert
D)  Microsievert

Question 7

Terrestrial radiation includes which of the following sources?

Accepted Answer

A)  Long-lived radioactive elements such as uranium-238,radium-226,and thorium-232 that are present in variable quantities in the crust of the earth
B)  Radioactive fallout from nuclear weapons tests in which detonation occurred above ground
C)  The sun and beyond the solar system
D)  Airport surveillance systems and electron microscopes

Question 8

Through which of the following routes can radon enter houses?
1) Crawl spaces under living areas
2) Floor drains and sump pumps
3) Porous cement block foundations

Accepted Answer

A)  1 and 2 only
B)  1 and 3 only
C)  2 and 3 only
D)  1,2,and 3

Question 9

A flight on a typical commercial airliner results in an equivalent dose rate of

Accepted Answer

A)  0.001 to 0.005 mSv/hr.
B)  0.005 to 0.01 mSv/hr.
C)  0.02 to 0.04 mSv/hr.
D)  0.05 to 0.09 mSv/hr. B

Question 10

Acute melting of the uranium dioxide fuel of a nuclear reactor core requires how great a temperature?

Accepted Answer

A)  Less than 500° F
B)  At least 1000° F
C)  2000° F
D)  Greater than 5000° F

Question 11

Which of the following is considered by the EPA to be the second leading cause of lung cancer in the United States?

Accepted Answer

A)  Annual PA and lateral chest radiographic images
B)  Cosmic ray exposure
C)  Radon exposure
D)  A fluoroscopic examination of the upper gastrointestinal tract C

Question 12

The mass of an alpha particle is approximately

Accepted Answer

A)  two times the mass of a hydrogen atom and a negative charge of minus 2.
B)  four times the mass of a hydrogen atom and a positive charge twice that of an electron.
C)  six times the mass of a hydrogen atom and a negative charge of minus 1.
D)  eight times the mass of a hydrogen atom and a positive charge four times that of an electron.

Question 13

Which of the following statements concerning the 1979 nuclear reactor accident at TMI-2 is not true?

Accepted Answer

A)  Many excess cancer deaths have been predicted to occur in the 2 million people living within 50 miles of the plant at the time of the accident.
B)  During the time of the accident,if persons living within a 100-mile radius of the nuclear power plant received an average radiation exposure of 15 microgray,and this dose is used as the population dose,then no more than two additional resulting cancer deaths can be predicted in the exposed inhabitants as a consequence of radiation exposure.
C)  The average dose received by the exposed population living within a 50-mile radius of the TMI nuclear power station at the time of the accident was determined to be 0.08 mSv,which is well below the average annual background level.
D)  No melt-through of the reactor vessel resulted during the accident.

Question 14

The Environmental Protection Agency (EPA) recommends that action be taken to reduce elevated levels of radon in homes to a concentration less than

Accepted Answer

A)  200 pCi/L.
B)  135 pCi/L.
C)  47 pCi/L.
D)  4 pCi/L.

Question 15

As a result of technologic advances since the 1970s and strict regulations imposed within the United States by the FDA regarding consumer products containing radioactive material,the radiation exposure of the general public from such produces may now be considered

Accepted Answer

A)  substantial.
B)  moderate.
C)  very slight.
D)  negligible.

Question 16

When exposed to high radon levels in the home,which of the following groups of people have the highest risk of developing lung cancer?

Accepted Answer

A)  Teenagers
B)  Adults from 20 to 30 years of age
C)  Nonsmokers
D)  Smokers

Question 17

What is the half-life of radon-220?

Accepted Answer

A)  54.5 seconds
B)  8 days
C)  2 years
D)  1622 years

Question 18

What is the total average annual radiation equivalent dose for estimated levels of radiation exposure for humans?

Accepted Answer

A)  2.0 mSv
B)  3.2 mSv
C)  6.3 mSv
D)  9.6 mSv

Question 19

Electromagnetic radiation travels or propagates through space in the form of a wave but can interact with matter as a particle of energy called a photon.This dual nature is referred to as

Accepted Answer

A)  wave attenuation capability.
B)  wave-particle interchange ability.
C)  wave-particle duality.
D)  wave-particle phenomena.

Question 20

If ionizing radiation from natural sources grows larger because of accidental or deliberate human actions such as mining radioactive elements,the sources are termed

Accepted Answer

A)  artificial sources.
B)  enhanced natural sources.
C)  extraterrestrial sources.
D)  manmade sources.

Exam 2: Radiation: Types, Sources, and Doses Received

Cosmic radiation occurs in which two forms?

Correct AnswerverifiedShow Answer

The first decay product of radium is

Correct AnswerverifiedShow Answer

Which of the following helps shield the global population from exposure to essentially all high-energy,bombarding cosmic rays?

Correct AnswerverifiedC

Which of the following are forms of electromagnetic radiation? 1) Microwaves 2) Visible light 3) X-rays 4) Gamma rays 5) Ultraviolet radiation

Correct AnswerverifiedShow Answer

In the electromagnetic spectrum,higher frequencies are associated with

Correct AnswerverifiedShow Answer

What is the most common unit of measure of equivalent dose?

Correct AnswerverifiedShow Answer

Terrestrial radiation includes which of the following sources?

Correct AnswerverifiedShow Answer

Through which of the following routes can radon enter houses? 1) Crawl spaces under living areas 2) Floor drains and sump pumps 3) Porous cement block foundations

Correct AnswerverifiedShow Answer

A flight on a typical commercial airliner results in an equivalent dose rate of

Correct AnswerverifiedB

Acute melting of the uranium dioxide fuel of a nuclear reactor core requires how great a temperature?

Correct AnswerverifiedShow Answer

Which of the following is considered by the EPA to be the second leading cause of lung cancer in the United States?

Correct AnswerverifiedC

The mass of an alpha particle is approximately

Correct AnswerverifiedShow Answer

Which of the following statements concerning the 1979 nuclear reactor accident at TMI-2 is not true?

Correct AnswerverifiedShow Answer

The Environmental Protection Agency (EPA) recommends that action be taken to reduce elevated levels of radon in homes to a concentration less than

Correct AnswerverifiedShow Answer

As a result of technologic advances since the 1970s and strict regulations imposed within the United States by the FDA regarding consumer products containing radioactive material,the radiation exposure of the general public from such produces may now be considered

Correct AnswerverifiedShow Answer

When exposed to high radon levels in the home,which of the following groups of people have the highest risk of developing lung cancer?

Correct AnswerverifiedShow Answer

What is the half-life of radon-220?

Correct AnswerverifiedShow Answer

What is the total average annual radiation equivalent dose for estimated levels of radiation exposure for humans?

Correct AnswerverifiedShow Answer

Electromagnetic radiation travels or propagates through space in the form of a wave but can interact with matter as a particle of energy called a photon.This dual nature is referred to as

Correct AnswerverifiedShow Answer

If ionizing radiation from natural sources grows larger because of accidental or deliberate human actions such as mining radioactive elements,the sources are termed

Correct AnswerverifiedShow Answer

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C

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B

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C

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