,DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannucci
9 9 9 9 9 9 9 9 9
Chapter 02: Radiation Physics
9 9 9
Iannucci: Dental Radiography, 6th Edition
9 9 9 9
MULTIPLE CHOICE 9
1. The fundamental unit of matter is the
9 9 9 9 9 9
a. proton.
b. neutron.
c. electron.
d. atom.
ANS: D 9
A proton is a subatomic particle. A neutron is a subatomic particle. An electron is a subatomic parti
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
cle. The fundamental unit of matter is the atom.
9 9 9 9 9 9 9 9
DIF: Recall REF: Page 7 OBJ: 1 99 9 9 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
9 9 9 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
2. The nucleus of an atom contains
9 9 9 9 9
a. protons.
b. neutrons.
c. protons and neutrons. 9 9
d. electrons.
ANS: C 9
The nucleus of an atom contains neutrons as well as protons. The nucleus of an atom contains prot
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ons as well as neutrons. The nucleus of an atom contains protons and neutrons. The nucleus of an
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
atom does not contain electrons; it contains protons and neutrons.
9 9 9 9 9 9 9 9 9
DIF: Recall REF: Page 7 OBJ: 2 99 9 9 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
9 9 9 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
3. Which subatomic particle carries a negative electrical charge?
9 9 9 9 9 9 9
a. A neutron 9
b. A proton 9
c. An electron 9
d. A nucleon 9
ANS: C 9
A neutron does not carry an electrical charge. A proton carries a positive electrical charge. An elect
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ron carries a negative electrical charge. A nucleon carries a positive (proton) or no (neutron) electr
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ical charge.9
DIF: Comprehension REF: Page 7 9 9
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
9 9 9 9 9 9 9 9 9 9
radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
9Radiobiology
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,DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannucci
9 9 9 9 9 9 9 9 9
4. Which of the following elements is the simplest atom?
9 9 9 9 9 9 9 9
a. Hydrogen (H #1) 9 9
b. Helium (He #2) 9 9
c. Nitrogen (N #7) 9 9
d. Oxygen (O #8) 9 9
ANS: A 9
Atomic numbers are assigned from simplest to most complex. Hydrogen is the simplest atom; with
9 9 9 9 9 9 9 9 9 9 9 9 9 9
a single proton, it has an atomic number of 1. Helium has an atomic number of 2.
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
Nitrogen has an atomic number of 7. Oxygen has an atomic number of 8.
9 9 9 9 9 9 9 9 9 9 9 9 9
DIF: Comprehension REF: Page 7 9 9
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
9 9 9 9 9 9 9 9 9 9
radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
9Radiobiology
5. Which of the following statements is true of orbits or shells in the atom?
9 9 9 9 9 9 9 9 9 9 9 9 9
a. Protons travel around the nucleus in well-defined shells.
9 9 9 9 9 9 9
b. An atom contains innumerable shells.
9 9 9 9
c. The energy level within each shell is the same.
9 9 9 9 9 9 9 9
d. The orbiting shell closest to the nucleus has the highest energy level.
9 9 9 9 9 9 9 9 9 9 9
ANS: D 9
Electrons travel around the nucleus in well-
9 9 9 9 9 9
defined shells. An atom contains a maximum of seven shells. Each of the maximum seven shells w
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ithin an atom represents a different energy level. The orbiting shell closest to the nucleus has the hi
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ghest energy level. The K shell is the orbiting shell closest to the nucleus.
9 9 9 9 9 9 9 9 9 9 9 9 9
DIF: Comprehension REF: Page 7 9 9
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
9 9 9 9 9 9 9 9 9 9
radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
9Radiobiology
6. The binding energy or binding force of an electron is
9 9 9 9 9 9 9 9 9
a. determined by the distance between the neutrons and protons within the nucleus.
9 9 9 9 9 9 9 9 9 9 9
b. determined by the distance between the orbiting electrons and the nucleus.
9 9 9 9 9 9 9 9 9 9
c. weaker for electrons located in inner shells than in outer shells.
9 9 9 9 9 9 9 9 9 9
d. determined by the atomic number. 9 9 9 9
ANS: B 9
The binding energy or binding force of an electron is not determined by the distance between the
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
neutrons and protons within the nucleus. The binding energy or binding force of an electron is det
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ermined by the distance between the nucleus and the orbiting electrons and is different for each s
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
hell. The binding energy or binding force of an electron is stronger for electrons located in inner s
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
hells than for outer shells. The binding energy is not determined by the atomic number.
9 9 9 9 9 9 9 9 9 9 9 9 9 9
DIF: Recall REF: Page 7 OBJ: 2 TOP: CDA, N/A 99 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
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, DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannucci
9 9 9 9 9 9 9 9 9
7. Which of the following statements is true of ionization?
9 9 9 9 9 9 9 9
a. An atom that gains an electron will have a negative charge.
9 9 9 9 9 9 9 9 9 9
b. An atom that loses an electron will have a negative charge.
9 9 9 9 9 9 9 9 9 9
c. An atom that loses an electron will have a positive charge.
9 9 9 9 9 9 9 9 9 9
d. An atom that gains an electron has a negative charge, and an atom that loses an ele
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ctron has a positive charge.9 9 9 9
ANS: D 9
This answer is not the best answer. An atom that gains an electron has a negative charge; however
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
, an atom that loses an electron has a positive charge. An atom that loses an electron will have a po
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
sitive charge. An atom that loses an electron has a positive charge; however, an atom that gains an
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
9electron has a negative charge. An atom that gains an electron will have a negative charge, and a
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
n atom that loses an electron will have a positive charge. An atom that gains or loses an electron a
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
nd becomes electrically unbalanced is known as an ion.
9 9 9 9 9 9 9 9
DIF: Comprehension REF: Page 9 9 9
OBJ: 3 TOP: CDA, N/A 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
8. An ion pair results when
9 9 9 9
a. a proton is removed from an atom.
9 9 9 9 9 9
b. an electron is removed from an atom.9 9 9 9 9 9
c. a neutron is removed from an atom.
9 9 9 9 9 9
d. two atoms share a pair of electrons. 9 9 9 9 9 9
ANS: B 9
An ion pair results when an electron is removed from an atom rather than a proton. When an electr
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
on is removed from an atom in the ionization process, an ion pair results. The atom becomes the p
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ositive ion, and the ejected electron becomes the negative ion. An ion pair results when an electro
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
n is removed from an atom rather than a neutron. A molecule occurs when two atoms share a pair
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
of electrons.
9
DIF: Recall REF: Page 9 OBJ: 3 99 9 9 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
9 9 9 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
9. (1) Radiation is the emission and propagation of energy through space or a substance in the form
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
of waves or particles. (2) Radioactivity can be defined as the process by which certain unstable at
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
oms or elements undergo spontaneous disintegration, or decay, in an effort to attain a more balan
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ced nuclear state. 9 9
a. Both statements are true. 9 9 9
b. Both statements are false. 9 9 9
c. The first statement is true; the second statement is false.
9 9 9 9 9 9 9 9 9
d. The first statement is false; the second statement is true.
9 9 9 9 9 9 9 9 9
ANS: A 9
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9 9 9 9 9 9 9 9 9
Chapter 02: Radiation Physics
9 9 9
Iannucci: Dental Radiography, 6th Edition
9 9 9 9
MULTIPLE CHOICE 9
1. The fundamental unit of matter is the
9 9 9 9 9 9
a. proton.
b. neutron.
c. electron.
d. atom.
ANS: D 9
A proton is a subatomic particle. A neutron is a subatomic particle. An electron is a subatomic parti
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
cle. The fundamental unit of matter is the atom.
9 9 9 9 9 9 9 9
DIF: Recall REF: Page 7 OBJ: 1 99 9 9 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
9 9 9 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
2. The nucleus of an atom contains
9 9 9 9 9
a. protons.
b. neutrons.
c. protons and neutrons. 9 9
d. electrons.
ANS: C 9
The nucleus of an atom contains neutrons as well as protons. The nucleus of an atom contains prot
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ons as well as neutrons. The nucleus of an atom contains protons and neutrons. The nucleus of an
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
atom does not contain electrons; it contains protons and neutrons.
9 9 9 9 9 9 9 9 9
DIF: Recall REF: Page 7 OBJ: 2 99 9 9 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
9 9 9 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
3. Which subatomic particle carries a negative electrical charge?
9 9 9 9 9 9 9
a. A neutron 9
b. A proton 9
c. An electron 9
d. A nucleon 9
ANS: C 9
A neutron does not carry an electrical charge. A proton carries a positive electrical charge. An elect
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ron carries a negative electrical charge. A nucleon carries a positive (proton) or no (neutron) electr
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ical charge.9
DIF: Comprehension REF: Page 7 9 9
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
9 9 9 9 9 9 9 9 9 9
radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
9Radiobiology
mynursytest.store
,DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannucci
9 9 9 9 9 9 9 9 9
4. Which of the following elements is the simplest atom?
9 9 9 9 9 9 9 9
a. Hydrogen (H #1) 9 9
b. Helium (He #2) 9 9
c. Nitrogen (N #7) 9 9
d. Oxygen (O #8) 9 9
ANS: A 9
Atomic numbers are assigned from simplest to most complex. Hydrogen is the simplest atom; with
9 9 9 9 9 9 9 9 9 9 9 9 9 9
a single proton, it has an atomic number of 1. Helium has an atomic number of 2.
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
Nitrogen has an atomic number of 7. Oxygen has an atomic number of 8.
9 9 9 9 9 9 9 9 9 9 9 9 9
DIF: Comprehension REF: Page 7 9 9
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
9 9 9 9 9 9 9 9 9 9
radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
9Radiobiology
5. Which of the following statements is true of orbits or shells in the atom?
9 9 9 9 9 9 9 9 9 9 9 9 9
a. Protons travel around the nucleus in well-defined shells.
9 9 9 9 9 9 9
b. An atom contains innumerable shells.
9 9 9 9
c. The energy level within each shell is the same.
9 9 9 9 9 9 9 9
d. The orbiting shell closest to the nucleus has the highest energy level.
9 9 9 9 9 9 9 9 9 9 9
ANS: D 9
Electrons travel around the nucleus in well-
9 9 9 9 9 9
defined shells. An atom contains a maximum of seven shells. Each of the maximum seven shells w
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ithin an atom represents a different energy level. The orbiting shell closest to the nucleus has the hi
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ghest energy level. The K shell is the orbiting shell closest to the nucleus.
9 9 9 9 9 9 9 9 9 9 9 9 9
DIF: Comprehension REF: Page 7 9 9
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics of x-
9 9 9 9 9 9 9 9 9 9
radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
9Radiobiology
6. The binding energy or binding force of an electron is
9 9 9 9 9 9 9 9 9
a. determined by the distance between the neutrons and protons within the nucleus.
9 9 9 9 9 9 9 9 9 9 9
b. determined by the distance between the orbiting electrons and the nucleus.
9 9 9 9 9 9 9 9 9 9
c. weaker for electrons located in inner shells than in outer shells.
9 9 9 9 9 9 9 9 9 9
d. determined by the atomic number. 9 9 9 9
ANS: B 9
The binding energy or binding force of an electron is not determined by the distance between the
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
neutrons and protons within the nucleus. The binding energy or binding force of an electron is det
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ermined by the distance between the nucleus and the orbiting electrons and is different for each s
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
hell. The binding energy or binding force of an electron is stronger for electrons located in inner s
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
hells than for outer shells. The binding energy is not determined by the atomic number.
9 9 9 9 9 9 9 9 9 9 9 9 9 9
DIF: Recall REF: Page 7 OBJ: 2 TOP: CDA, N/A 99 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
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, DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannucci
9 9 9 9 9 9 9 9 9
7. Which of the following statements is true of ionization?
9 9 9 9 9 9 9 9
a. An atom that gains an electron will have a negative charge.
9 9 9 9 9 9 9 9 9 9
b. An atom that loses an electron will have a negative charge.
9 9 9 9 9 9 9 9 9 9
c. An atom that loses an electron will have a positive charge.
9 9 9 9 9 9 9 9 9 9
d. An atom that gains an electron has a negative charge, and an atom that loses an ele
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ctron has a positive charge.9 9 9 9
ANS: D 9
This answer is not the best answer. An atom that gains an electron has a negative charge; however
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
, an atom that loses an electron has a positive charge. An atom that loses an electron will have a po
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
sitive charge. An atom that loses an electron has a positive charge; however, an atom that gains an
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
9electron has a negative charge. An atom that gains an electron will have a negative charge, and a
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
n atom that loses an electron will have a positive charge. An atom that gains or loses an electron a
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
nd becomes electrically unbalanced is known as an ion.
9 9 9 9 9 9 9 9
DIF: Comprehension REF: Page 9 9 9
OBJ: 3 TOP: CDA, N/A 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
8. An ion pair results when
9 9 9 9
a. a proton is removed from an atom.
9 9 9 9 9 9
b. an electron is removed from an atom.9 9 9 9 9 9
c. a neutron is removed from an atom.
9 9 9 9 9 9
d. two atoms share a pair of electrons. 9 9 9 9 9 9
ANS: B 9
An ion pair results when an electron is removed from an atom rather than a proton. When an electr
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
on is removed from an atom in the ionization process, an ion pair results. The atom becomes the p
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ositive ion, and the ejected electron becomes the negative ion. An ion pair results when an electro
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
n is removed from an atom rather than a neutron. A molecule occurs when two atoms share a pair
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
of electrons.
9
DIF: Recall REF: Page 9 OBJ: 3 99 9 9 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
9 9 9 9 9 9 9 9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics and
9 9 9 9 9 9 9 9 9 9 9 9 9
Radiobiology
9
9. (1) Radiation is the emission and propagation of energy through space or a substance in the form
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
of waves or particles. (2) Radioactivity can be defined as the process by which certain unstable at
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
oms or elements undergo spontaneous disintegration, or decay, in an effort to attain a more balan
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
ced nuclear state. 9 9
a. Both statements are true. 9 9 9
b. Both statements are false. 9 9 9
c. The first statement is true; the second statement is false.
9 9 9 9 9 9 9 9 9
d. The first statement is false; the second statement is true.
9 9 9 9 9 9 9 9 9
ANS: A 9
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