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40-HOUR RADIATION SA FETY
EXAM WITH CORRECT
SOLUTIONS
Question : In the early years of radiography what caused
personnel to be exposed?
CORRECT ANSWER : All the above
Question : In what year did Marie Curie die?
CORRECT ANSWER : late in 1898
Question : Who coined the term radioactivity?
CORRECT ANSWER : Marie and Pierre Curie
Question : In the early years of radiography from 1920-
1930, the maximum thickness that could be inspected via X-radiation was of steel?
CORRECT ANSWER : 3 in ( 7.62 )
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Question : Historically, it has been proven the
predominant cause of overexposure is
CORRECT ANSWER : All the above
Question : The responsibility to adhere to the regulations,
license conditions and company policies falls to:
CORRECT ANSWER : All radiation workers
Question : Alpha particles were discovered by
CORRECT ANSWER : Ernest Rutherford
Question : The first medical X-Ray was conducted at
CORRECT ANSWER : Massachusetts General
Question : Regulations from one state to the next are
essentially the same?
CORRECT ANSWER : True
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Question : The origins of industrial radiography can be
attributed to:
CORRECT ANSWER : Wilhem Rontgen
Question : A radiographer has several avenues to seek
guidance and counsel. The first person he should turn to is?
CORRECT ANSWER : The RSO
Question : The two basic types of radiation are?
CORRECT ANSWER : particulate and electromagnetic
Question : Wavelike radiation travels at:
CORRECT ANSWER : at the speed of light without
regard to pressure, temperature or magnetic fields
Question : Gamma rays travel in a wavelike motion at the
speed of?
CORRECT ANSWER : 186,000 miles/s
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Question : Matter can be turned into energy?
CORRECT ANSWER : True
Question : Alpha particles are much like helium nucleus
as they have?
CORRECT ANSWER : 2 protons and 2 neutrons
Question : Alpha particles have a/an
CORRECT ANSWER : Positive charge
Question : Beta particles have a/an
CORRECT ANSWER : negative charge
Question : Beta particles have a mass:
CORRECT ANSWER : much less than that of an alpha
particle
Question : In modern radiography the alpha particle and
beta particles are of little concern because?