Page | 1
OHIO GXMO STUDY GUIDE REVIEW
2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Who discovered x-rays? - correct answer -Wilhelm Conrad
Roentgen
When were x-rays discovered? - correct answer -November 8,
1895 in Germany
What are the 3 Cardinal Principals of radiation protection? -
correct answer -Maximize distance, maximize shielding, minimize
time
What is Erythema? - correct answer -Reddening of the skin
What is Anemia? - correct answer -Decrease of oxygen in blood,
low blood count
, Page | 2
What is Leukopenia? - correct answer -Low WBC count
What is epilation? - correct answer -Loss of hair
What does ALARA stand for? - correct answer -As Low As
Reasonably Achievable
What is collimation? - correct answer -Limits the size/area of the
x-ray beam
What is a proton? - correct answer -Positively charged, in nucleus
of atom
What is a neutron? - correct answer -No electrical charge, in
nucleus of atom
What is a electron? - correct answer -Negatively charged, in
orbital shell around nucleus of an atom
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What is an ion? - correct answer -A charged particle
What is ionization? - correct answer -Process of an electron
leaving its orbit around a neutral atom
What is an ion pair? - correct answer -An electron and a positive
charged atom
What does isotropic mean? - correct answer -Equal in all
directions
What is energy? - correct answer -The ability to do work
What is mass? - correct answer -The quantity of matter
, Page | 4
What is matter? - correct answer -Anything that occupies space
and has mass
What travels at 186,000 miles/second? - correct answer -All
electromagnetic radiation
Does electromagnetic radiation have mass? - correct answer -No
What has higher energy than visible light? - correct answer -X-
rays
What happens when x-rays are absorbed by body tissue? -
correct answer -Causes ionization of atoms and molecules
Ionization can result in what type of damage? - correct answer -
Biological Damage
What is radioplaque? - correct answer -DOES NOT go through
OHIO GXMO STUDY GUIDE REVIEW
2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Who discovered x-rays? - correct answer -Wilhelm Conrad
Roentgen
When were x-rays discovered? - correct answer -November 8,
1895 in Germany
What are the 3 Cardinal Principals of radiation protection? -
correct answer -Maximize distance, maximize shielding, minimize
time
What is Erythema? - correct answer -Reddening of the skin
What is Anemia? - correct answer -Decrease of oxygen in blood,
low blood count
, Page | 2
What is Leukopenia? - correct answer -Low WBC count
What is epilation? - correct answer -Loss of hair
What does ALARA stand for? - correct answer -As Low As
Reasonably Achievable
What is collimation? - correct answer -Limits the size/area of the
x-ray beam
What is a proton? - correct answer -Positively charged, in nucleus
of atom
What is a neutron? - correct answer -No electrical charge, in
nucleus of atom
What is a electron? - correct answer -Negatively charged, in
orbital shell around nucleus of an atom
, Page | 3
What is an ion? - correct answer -A charged particle
What is ionization? - correct answer -Process of an electron
leaving its orbit around a neutral atom
What is an ion pair? - correct answer -An electron and a positive
charged atom
What does isotropic mean? - correct answer -Equal in all
directions
What is energy? - correct answer -The ability to do work
What is mass? - correct answer -The quantity of matter
, Page | 4
What is matter? - correct answer -Anything that occupies space
and has mass
What travels at 186,000 miles/second? - correct answer -All
electromagnetic radiation
Does electromagnetic radiation have mass? - correct answer -No
What has higher energy than visible light? - correct answer -X-
rays
What happens when x-rays are absorbed by body tissue? -
correct answer -Causes ionization of atoms and molecules
Ionization can result in what type of damage? - correct answer -
Biological Damage
What is radioplaque? - correct answer -DOES NOT go through
