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Radiation Safety Certification Exam Questions and Answers 100% Solved
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Radiation Safety Certification Exam
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Radiation Safety Certification ExamAny radiation that directly or indirectly displaces electrons from the original shell of
atoms is call ____________ radiation. - answer Ionizing
What is the basic differences between x-rays and gamma rays? - answer The Origin
The speed at which X and gamma rays travel is: - answer The speed of light
The two basic types if radiation are: - answer Particulate and Electro-magnetic
An element with the same atomic number but a different atomic weight is a(an): -
answer Isotope
Elector-magnetic radiation produced during the disintegration of the nuclei of radioactive
substances is called: - answer Gamma radiation
Atoms are composed of protons, neutrons and - answer Electrons
The amount of time it takes for a given radioisotope to decay to one-half of its original
activity is referred to as its - answerHalf-Life
In industrial radiography, which of the following is most utilized? - answerGamma Rays
The are known as the center of an atoms is called the: - answerNucleus
One roentgen is equal to: - answer1,000 milliroentgen
What does the acronym REM stand for? - answerRoentgen Equivalent Man
How is radiation intensity expressed? - answerRoentgen per hour
What does the acronym RAD stand for? - answerRadiation Absorbed Dose
What is the unit of measurement for the effect of any type of radiation on man that is
equivalent to the effect of one roentgen of gamma radiation to man? - answerREM
The amount of radiation given off by a particular isotope due to the disintegration of the
nuclei of its atoms is referred to as its - answerIntensity
3.5 R/hr equals how many mR/hr? - answer3500
, The quantity of x or gamma radiation which will produce, by means of ionization, one
electrostatic unit (esu) of charge in one cubic centimeter of dry air at standard
temperature and pressure is the____________? - answerRoentgen
The amount of any radioisotope that gives 3.7x10^10 disintegrations per second is the
definition of a(n)? - answerCurie
Biological effects of radiation are grouped into two major classes. These classes are
______________ and _______________. - answerGenetic Effects & Somatic Effects
The acronym ALARA means: - answerAs Low As Reasonably Achievable
What amount of radiation exposure is generally considered excessive? - answerAny
unnecessary exposure is excessive.
Which of the following whole body exposures would most likely be fatal 50% of the
time? - answer500 REM
Which of the following human senses can detect radiation? - answerNone
The radiation area boundary needs to be posted at an area where no one can receive a
dose of more than ___________ in any one hour. - answer5 mrem
Birth defects that can happen in future generations as a result of exposure to ionizing
radiation are referred to as ______________. - answerGenetic Effects
The cells of the human body that are most affected by ionizing radiation are the
________________. - answerWhite Blood Cells
The High Radiation area boundary needs to be posted at an area where no one can
receive a dose of more than ___________ in any one hour? - answer100 mrem
What is the maximum amount of detectable contamination allowed after performing a
leak test? - answer<0.005 Microcuries
Of the most commonly used isotopes in industrial radiography, which has the greatest
energy? Cs 137, Ir 192, Co 60 or Se 75 - answerCo 6o
What material is used as a primary shielding material in radiographic exposure devices?
- answerDepleted Uranium
What method(s) can a radiographer utilize to reduce his/her exposure to radiation? -
answerTime, Distance, and Shielding
How many half value layers would be required to reduce 4 R/hr to a value of
approximately 2 mR/hr? - answer11 Half Value Layers
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