Question 1

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)   Earth's atmosphere and magnetic field
D)   SmogE) All of the above
F) A) and D)

Question 2

When natural sources of ionizing radiation become increased because of accidental or deliberate human actions such as mining,they are referred to as:

Accepted Answer

A)   artificial sources.
B)   enhanced natural sources.
C)   extraterrestrial sources.
D)   manmade sources.E) None of the above
F) B) and C)

Question 3

According to the Environmental Protection Agency (EPA) ,radon levels in homes should not exceed what level?

Accepted Answer

A)   200 pCi/L
B)   135 pCi/L
C)   47 pCi/L
D)   4 pCi/LE) B) and D)
F) A) and B)

Question 4

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 galacticE) C) and D)
F) B) and C)

Question 5

The first decay product of radium is:

Accepted Answer

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

Question 6

The amount of energy transferred to electrons by ionizing radiation is the basis of the concept of:

Accepted Answer

A)   electromagnetic radiation.
B)   nuclear power.
C)   radioactive decay.
D)   radiation dose.E) A) and C)
F) A) and B)

Question 7

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

Accepted Answer

A)   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)   Excess cancer deaths have not been predicted to occur in the 2 million people living within 50 miles of the plant at the time of the accident.
C)   The equivalent dose (Eq
D)   received by 2 million people living in the vicinity of the nuclear reactor at the time of the accident was 0.02 mSv.
D)   No melt-through of the reactor vessel occurred during the accident.E) B) and C)
F) A) and B) A

Question 8

Of the two sources of ionizing radiation listed below,which source remains fairly constant from year to year?

Accepted Answer

A)   Human-made
B)   NaturalC) A) and B)
D) undefined

Question 9

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.E) C) and D)
F) B) and D)

Question 10

What was the total average annual effective dose from natural background and human-made radiations combined as of 2006?

Accepted Answer

A)   2.0 mSv
B)   3.2 mSv
C)   6.3 mSv
D)   9.6 mSvE) B) and C)
F) A) and B)

Question 11

What is the half-life of radon-220?

Accepted Answer

A)   54.5 seconds
B)   8 days
C)   2 years
D)   1622 yearsE) None of the above
F) B) and C)

Question 12

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

Accepted Answer

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

Question 13

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 3E) B) and D)
F) All of the above

Question 14

Which of the following sources of radiation is human-made?
1) Atmospheric fallout from nuclear weapons testing
2) Cosmic radiation from the sun and beyond the solar system
3) Nuclear power plant accidents as a consequence of natural disasters

Accepted Answer

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

Question 15

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° FE) All of the above
F) A) and B)

Question 16

As of 2006,when spread over the inhabitants of the United States,fallout from nuclear weapons tests and other environmental sources along with other human-made radiations contributed:

Accepted Answer

A)   only a small portion of 0.1 mSv to the equivalent dose of each person.
B)   a dose of approximately 1.5 mSv to the equivalent dose of each person.
C)   a dose of approximately 3.2 mSv to the equivalent dose of each person.
D)   a dose of approximately 6.3 mSv to the equivalent dose of each person.E) None of the above
F) All of the above

Question 17

The mass of an alpha particle is approximately:

Accepted Answer

A)   two times the mass of a hydrogen atom.
B)   four times the mass of a hydrogen atom.
C)   six times the mass of a hydrogen atom.
D)   eight times the mass of a hydrogen atom.E) B) and C)
F) A) and B) B

Question 18

What is the latent period for most radiation-induced cancers?

Accepted Answer

A)   1 year
B)   5 years
C)   7 years
D)   15 years or moreE) C) and D)
F) B) and C)

Question 19

Both occupational and nonoccupational dose limits may be stated in:
1) coulombs per kilogram.
2) grays.
3) Sieverts.

Accepted Answer

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

Question 20

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 radiographs
B)   Cosmic ray exposure
C)   Radon exposure
D)   A fluoroscopic examination of the upper gastrointestinal tractE) None of the above
F) All of the above

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

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

Correct AnswerverifiedShow Answer

When natural sources of ionizing radiation become increased because of accidental or deliberate human actions such as mining,they are referred to as:

Correct AnswerverifiedShow Answer

According to the Environmental Protection Agency (EPA) ,radon levels in homes should not exceed what level?

Correct AnswerverifiedShow Answer

Cosmic radiation occurs in which two forms?

Correct AnswerverifiedShow Answer

The first decay product of radium is:

Correct AnswerverifiedShow Answer

The amount of energy transferred to electrons by ionizing radiation is the basis of the concept of:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA

Of the two sources of ionizing radiation listed below,which source remains fairly constant from year to year?

Correct AnswerverifiedShow Answer

In the electromagnetic spectrum,higher frequencies are associated with:

Correct AnswerverifiedShow Answer

What was the total average annual effective dose from natural background and human-made radiations combined as of 2006?

Correct AnswerverifiedShow Answer

What is the half-life of radon-220?

Correct AnswerverifiedShow Answer

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

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

Which of the following sources of radiation is human-made? 1) Atmospheric fallout from nuclear weapons testing 2) Cosmic radiation from the sun and beyond the solar system 3) Nuclear power plant accidents as a consequence of natural disasters

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

As of 2006,when spread over the inhabitants of the United States,fallout from nuclear weapons tests and other environmental sources along with other human-made radiations contributed:

Correct AnswerverifiedShow Answer

The mass of an alpha particle is approximately:

Correct AnswerverifiedB

What is the latent period for most radiation-induced cancers?

Correct AnswerverifiedShow Answer

Both occupational and nonoccupational dose limits may be stated in: 1) coulombs per kilogram. 2) grays. 3) Sieverts.

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 AnswerverifiedShow Answer

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A

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B

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B

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