,Chapter 01: Essential Concepts of Radiologic Science Bushong:
x x x x x x x x
Radiologic Science for Technologists, 13th Edition
x x x x x
MULTIPLE CHOICE x
1. Matter is measured in
x x x .
a. kilograms
b. joules
c. electron volts x
d. rems
ANS: A x
Matter is measured in kilograms.
x x x x
2. Atoms and molecules are the fundamental building blocks of
x x x x x x x x .
a. energy
b. radiation
c. matter
d. gravity
ANS: C x
Atoms and molecules are the fundamental building blocks of matter.
x x x x x x x x x
3. Ice and steam are examples of two forms of
x x x x x x x x .
a. matter
b. radiation
c. energy
d. work
ANS: A x
Ice and steam are examples of two forms of matter.
x x x x x x x x x
4. The formula E = mc2 is the basis for the theory that led to the development of
x x x x
x
x x x x x x x x x x x .
a. x-rays
b. electromagnetic radiation x
c. nuclear power x
d. cathode ray tubes x x
ANS: C x
The formula E = mc2 is the basis for the theory that led to the development of nuclear power.
x x x x x x x x x x x x x x x x x x
5. Radio waves, light, and x-rays are all examples of
x x x x x x x x energy.
a. nuclear
b. thermal
c. electrical
d. electromagnetic
ANS: D x
Electromagnetic energy includes radio waves, light, and x-rays as well as other parts of the spectrum.
x x x x x x x x x x x x x x x
, 6. A moving object has
x x x energy.
a. potential
b. kinetic
c. nuclear
d. electromagnetic
ANS: B x
A moving object has kinetic energy.
x x x x x
7. What is the removal of an electron from an atom called?
x x x x x x x x x x
a. Ionization
b. Pair production x
c. Irradiation
d. Electricity
ANS: A x
The removal of an electron from an atom is called ionization.
x x x x x x x x x x
8. Ionizing radiation is capable of removing
x x x x x
from atoms as it passes through the
x x x x x x x
matter.
a. neutrons
b. protons
c. electrons
d. ions
ANS: C x
Ionizing radiation is capable of removing electrons from atoms as it passes through the matter.
x x x x x x x x x x x x x x
9. The energy of x-rays is _
x x x x x .
a. thermal
b. potential
c. kinetic
d. electromagnetic
ANS: D x
X-rays are a form of electromagnetic energy.
x x x x x x
10. The biggest source of man-made ionizing radiation exposure to the public is
x x x x x x x x x x x
.
a. atomic fallout x
b. diagnostic x-rays x
c. smoke detectors x
d. nuclear power plants x x
ANS: B x
Medical x-ray exposure is the biggest source of man-made radiation.
x x x x x x x x x
11. In the United States, we are exposed to
x x x x x x x
_ mSv/year of ionizing radiation from the n
x x x x x x x
atural environment.
x
a. 0 to 5 x x
b. 5 to 20 x x
c. 20 to 90 x x
, d. 100 to 300 x x
ANS: A x
We are exposed to about 3 mSv/yr of ionizing radiation from natural environmental sources in the
x x x x x x x x x x x x x x x
United States.
x x
12. Today, radiology is considered to be a(n)
x x x x x x occupation.
a. safe
b. unsafe
c. dangerous
d. high-risk
ANS: A x
Today, radiology is considered to be a safe occupation because of effective radiation protection p
x x x x x x x x x x x x x x
ractices.
13. is a special quantity of radiologic science. x x x x x x
a. Mass
b. Velocity
c. Radioactivity
d. Momentum
ANS: C x
Radioactivity is a special quantity of radiologic science.
x x x x x x x
14. What does ALARA mean?
x x x
a. All Level Alert Radiation Accident
x x x x
b. As Low As Reasonably Achievable
x x x x
c. Always Leave A Restricted Area x x x x
d. As Low As Regulations Allow
x x x x
ANS: B x
ALARA means As Low As Reasonably Achievable.
x x x x x x
15. Computed tomography was developed in the
x x x x x .
a. 1890s
b. 1920s
c. 1970s
d. 1990s
ANS: C x
Computed tomography was developed in the 1970s.
x x x x x x
16. Filtration is used to x x . x
a. absorb low-energy x-rays x x
b. remove high-energy x-rays x x
c. restrict the useful beam to the body part imaged
x x x x x x x x
d. fabricate gonadal shields x x
ANS: A x
Filtration is used to absorb low-energy x-rays.
x x x x x x
x x x x x x x x
Radiologic Science for Technologists, 13th Edition
x x x x x
MULTIPLE CHOICE x
1. Matter is measured in
x x x .
a. kilograms
b. joules
c. electron volts x
d. rems
ANS: A x
Matter is measured in kilograms.
x x x x
2. Atoms and molecules are the fundamental building blocks of
x x x x x x x x .
a. energy
b. radiation
c. matter
d. gravity
ANS: C x
Atoms and molecules are the fundamental building blocks of matter.
x x x x x x x x x
3. Ice and steam are examples of two forms of
x x x x x x x x .
a. matter
b. radiation
c. energy
d. work
ANS: A x
Ice and steam are examples of two forms of matter.
x x x x x x x x x
4. The formula E = mc2 is the basis for the theory that led to the development of
x x x x
x
x x x x x x x x x x x .
a. x-rays
b. electromagnetic radiation x
c. nuclear power x
d. cathode ray tubes x x
ANS: C x
The formula E = mc2 is the basis for the theory that led to the development of nuclear power.
x x x x x x x x x x x x x x x x x x
5. Radio waves, light, and x-rays are all examples of
x x x x x x x x energy.
a. nuclear
b. thermal
c. electrical
d. electromagnetic
ANS: D x
Electromagnetic energy includes radio waves, light, and x-rays as well as other parts of the spectrum.
x x x x x x x x x x x x x x x
, 6. A moving object has
x x x energy.
a. potential
b. kinetic
c. nuclear
d. electromagnetic
ANS: B x
A moving object has kinetic energy.
x x x x x
7. What is the removal of an electron from an atom called?
x x x x x x x x x x
a. Ionization
b. Pair production x
c. Irradiation
d. Electricity
ANS: A x
The removal of an electron from an atom is called ionization.
x x x x x x x x x x
8. Ionizing radiation is capable of removing
x x x x x
from atoms as it passes through the
x x x x x x x
matter.
a. neutrons
b. protons
c. electrons
d. ions
ANS: C x
Ionizing radiation is capable of removing electrons from atoms as it passes through the matter.
x x x x x x x x x x x x x x
9. The energy of x-rays is _
x x x x x .
a. thermal
b. potential
c. kinetic
d. electromagnetic
ANS: D x
X-rays are a form of electromagnetic energy.
x x x x x x
10. The biggest source of man-made ionizing radiation exposure to the public is
x x x x x x x x x x x
.
a. atomic fallout x
b. diagnostic x-rays x
c. smoke detectors x
d. nuclear power plants x x
ANS: B x
Medical x-ray exposure is the biggest source of man-made radiation.
x x x x x x x x x
11. In the United States, we are exposed to
x x x x x x x
_ mSv/year of ionizing radiation from the n
x x x x x x x
atural environment.
x
a. 0 to 5 x x
b. 5 to 20 x x
c. 20 to 90 x x
, d. 100 to 300 x x
ANS: A x
We are exposed to about 3 mSv/yr of ionizing radiation from natural environmental sources in the
x x x x x x x x x x x x x x x
United States.
x x
12. Today, radiology is considered to be a(n)
x x x x x x occupation.
a. safe
b. unsafe
c. dangerous
d. high-risk
ANS: A x
Today, radiology is considered to be a safe occupation because of effective radiation protection p
x x x x x x x x x x x x x x
ractices.
13. is a special quantity of radiologic science. x x x x x x
a. Mass
b. Velocity
c. Radioactivity
d. Momentum
ANS: C x
Radioactivity is a special quantity of radiologic science.
x x x x x x x
14. What does ALARA mean?
x x x
a. All Level Alert Radiation Accident
x x x x
b. As Low As Reasonably Achievable
x x x x
c. Always Leave A Restricted Area x x x x
d. As Low As Regulations Allow
x x x x
ANS: B x
ALARA means As Low As Reasonably Achievable.
x x x x x x
15. Computed tomography was developed in the
x x x x x .
a. 1890s
b. 1920s
c. 1970s
d. 1990s
ANS: C x
Computed tomography was developed in the 1970s.
x x x x x x
16. Filtration is used to x x . x
a. absorb low-energy x-rays x x
b. remove high-energy x-rays x x
c. restrict the useful beam to the body part imaged
x x x x x x x x
d. fabricate gonadal shields x x
ANS: A x
Filtration is used to absorb low-energy x-rays.
x x x x x x
