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RADIATION SAFETY CERTIFICATION EXAM QUESTIONS WITH CORRECT ANSWERS
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RADIATION SAFETY CERTIFICATION EXAM QUESTIONS WITH CORRECT ANSWERS
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RADIATION SAFETY CERTIFICATIONEXAM QUESTIONS WITH CORRECT
ANSWERS
Any 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
Electo-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 - Answer-Half-Life
In industrial radiography, which of the following is most utilized? - Answer-Gamma Rays
The are known as the center of an atoms is called the: - Answer-Nucleus
One roentgen is equal to: - Answer-1,000 milliroentgen
What does the acronym REM stand for? - Answer-Roentgen Equivalent Man
How is radiation intensity expressed? - Answer-Roentgen per hour
What does the acronym RAD stand for? - Answer-Radiation 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? - Answer-REM
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 - Answer-Intensity
3.5 R/hr equals how many mR/hr? - Answer-3500
, 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____________? - Answer-Roentgen
The amount of any radioisotope that gives 3.7x10^10 disintegrations per second is the
definition of a(n)? - Answer-Curie
Biological effects of radiation are grouped into two major classes. These classes are
______________ and _______________. - Answer-Genetic Effects & Somatic Effects
The acronym ALARA means: - Answer-As Low As Reasonably Achievable
What amount of radiation exposure is generally considered excessive? - Answer-Any
unnecessary exposure is excessive.
Which of the following whole body exposures would most likely be fatal 50% of the
time? - Answer-500 REM
Which of the following human senses can detect radiation? - Answer-None
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. - Answer-5 mrem
Birth defects that can happen in future generations as a result of exposure to ionizing
radiation are referred to as ______________. - Answer-Genetic Effects
The cells of the human body that are most affected by ionizing radiation are the
________________. - Answer-White 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? - Answer-100 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 - Answer-Co 6o
What material is used as a primary shielding material in radiographic exposure devices?
- Answer-Depleted Uranium
What method(s) can a radiographer utilize to reduce his/her exposure to radiation? -
Answer-Time, Distance, and Shielding
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