1 - Unit review exercises Flashcards
(23 cards)
1
Q
- (622) What is another name for the electromagnetic force that causes protons to tear apart
the nucleus of the atom during the process of radioactive decay?
a. Coulomb (C).
b. Positron.
c. Isomeric.
d. Transformation
A
a. Coulomb (C).
2
Q
- (622) Which statement best describes an alpha particle?
a. Heavy and slow.
b. Light and slow.
c. Heavy and fast.
d. Light and fast.
A
a. Heavy and slow.
3
Q
- (622) Which particle is considered the most ionizing?
a. Positron.
b. Electron.
c. Alpha.
d. Beta.
A
c. Alpha.
4
Q
- (622) In beta plus (β+) decay, the parent nucleus changes a
a. proton into a neutron and gives off a positively charged particle.
b. neutron into a proton and gives off a positively charged particle.
c. proton into a neutron and gives off a negatively charged particle.
d. neutron into a proton and gives off a negatively charged particle.
A
a. proton into a neutron and gives off a positively charged particle.
5
Q
- (622) What can be used to classify a neutron?
a. Size.
b. Heat.
c. Speed.
d. Weight.
A
c. Speed.
6
Q
- (623) What is the process by which an alpha particle gains kinetic energy?
a. Ionization.
b. Excitation.
c. Bremsstrahlung.
d. Compton scattering
A
c. Bremsstrahlung.
6
Q
- (623) The linear energy transfer (LET) of a beta particle is lower than that of an alpha
particle because of its
a. larger mass and higher speed.
b. larger mass and slower speed.
c. smaller mass and higher speed.
d. smaller mass and slower speed
A
c. smaller mass and higher speed.
7
Q
- (623) In pair production, a photon disappears with an electron and positron appearing in its
place, and the energy left over from the transformation is
a. transferred only to the positron.
b. transferred only to the electron.
c. absorbed by the nucleus.
d. shared by the particles.
A
d. shared by the particles.
8
Q
- (624) Since every isotope decays at a specific rate, the rate of decay (λ) is proportional to
the
a. dose equivalent (H).
b. stability of the nucleus.
c. radiation absorbed dose.
d. concentration of radioactivity
A
b. stability of the nucleus.
9
Q
- (624) Which type of ionizing radiation has been found more effective in producing
cataracts?
a. Beta.
b. Alpha.
c. X-Rays.
d. Neutrons.
A
d. Neutrons.
10
Q
- (624) When comparing the relative toxicity of various radiations, what is the result of a higher rate of linear energy transfer (LET)?
a. Less effective in producing biological damage.
b. More effective in producing biological damage.
c. Less effective in reducing how much energy was absorbed.
d. More effective in reducing how much energy was absorbed
A
b. More effective in producing biological damage.
11
Q
- (625) Cells that form which type of tissues are most easily damaged by ionizing
radiation?
a. Stem.
b. Somatic.
c. Lactotrope.
d. Reproductive.
A
d. Reproductive.
12
Q
- (625) What types of cells from forming tissue are most easily damaged by ionizing
radiation?
a. Bone.
b. Blood.
c. Nerve.
d. Muscle
A
b. Blood.
13
Q
- (625) Most biological effects of ionizing radiation that can be directly observed are of
which type?
a. Random.
b. Stochastic.
c. Probabilistic.
d. Deterministic.
A
d. Deterministic.
14
Q
- (625) Regarding acute radiation syndrome (ARS), what is the correct order of the body
areas damaged as the dose increases?
a. Hematopoietic, gastrointestinal (GI), pulmonary, and central nervous system.
b. Central nervous system (CNS), pulmonary, GI, and hematopoietic.
c. Pulmonary, hematopoietic, GI, and central nervous system.
d. GI, central nervous system, pulmonary, and hematopoietic.
A
a. Hematopoietic, gastrointestinal (GI), pulmonary, and central nervous system.
15
Q
- (626) Which component of an X-ray tube is negatively charged?
a. Anode.
b. Cathode.
c. Tube head.
d. Collimator.
A
b. Cathode.
16
Q
- (626) What term is used to identify the area of the target bombarded by electrons at any
moment in time in an X-ray machine?
a. Field.
b. Parameter.
c. Focal spot.
d. Total distance.
A
c. Focal spot.
17
Q
- (626) What role does the collimator play in X-ray production?
a. Reduces scatter radiation.
b. Filters out lower energy photons.
c. Slows down the eventual burnout of the tube head.
d. Increases the number of electrons fired from the filament.
A
a. Reduces scatter radiation.
18
Q
- (627) Within the radioisotope permit program, which of the following is not a type of material that the Nuclear Regulatory Commission (NRC) regulates?
a. Source.
b. Byproduct.
c. Radiological.
d. Special nuclear.
A
c. Radiological.
19
Q
- (627) Who has the broad responsibility of ensuring the receipt, possession, distribution,
use, transfer, and disposal of radioactive materials (RAM) within the Air Force?
a. Radiation Commission.
b. Nuclear Regulatory Commission (NRC).
c. Air Force Radioisotope Committee (RIC).
d. United States Air Force Master Materials License (MML).
A
c. Air Force Radioisotope Committee (RIC).
19
Q
- (627) Under which radiation permit would an X-ray fluorescence device be covered?
a. Template.
b. Traditional.
c. Non-template.
d. Nontraditional.
A
a. Template.
20
Q
- (627) A research and development (R&D) permit is an example of which type of
radiation permit?
a. Nontraditional.
b. Non-template.
c. Traditional.
d. Template.
A
b. Non-template.
21
Q
- (627) Who is responsible for ensuring the parameters described within each radiation
permit are followed?
a. Shop supervisor.
b. Permit control officer.
c. Radiation safety officer (RSO).
d. Bioenvironmental engineer (BEE)
A
c. Radiation safety officer (RSO).
