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TEST BANK FOR Radiation Physics Iannucci: Dental Radiography, 6th Edition QUESTIONS AND ANSWERS
TEST BANK FOR Radiation Physics Iannucci: Dental Radiography, 6th Edition QUESTIONS AND ANSWERS
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,DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannuccigi gi gi gi gi gi gi gi gi
Chapter 02: Radiation Physics
Iannucci: Dental Radiography, 6th Edition
MULTIPLE CHOICE gi
1. The fundamental unit of matter is the
gi gi gi gi gi gi
a. proton.
b. neutron.
c. electron.
d. atom.
ANS: D g i
A proton is a subatomic particle. A neutron is a subatomic particle. An electron is a subatomic p
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
article. The fundamental unit of matter is the atom.
gi gi gi gi gi gi gi gi
DIF: Recall REF: Page 7 OBJ: 1 gigi gi g i g i
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
g i gi gi gi gi gi gi gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiology
gi
2. The nucleus of an atom contains
gi gi gi gi gi
a. protons.
b. neutrons.
c. protons and neutrons. gi gi
d. electrons.
ANS: C g i
The nucleus of an atom contains neutrons as well as protons. The nucleus of an atom contains
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
protons as well as neutrons. The nucleus of an atom contains protons and neutrons. The nucle
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
us of an atom does not contain electrons; it contains protons and neutrons.
gi gi gi gi gi gi gi gi gi gi gi gi
DIF: Recall REF: Page 7 OBJ: 2 gigi gi g i g i
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
g i gi gi gi gi gi gi gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiology
gi
3. Which subatomic particle carries a negative electrical charge?
gi gi gi gi gi gi gi
a. A neutron gi
b. A proton gi
c. An electron gi
d. A nucleon gi
ANS: C g i
A neutron does not carry an electrical charge. A proton carries a positive electrical charge. An e
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
lectron carries a negative electrical charge. A nucleon carries a positive (proton) or no (neutron
gi gi gi gi gi gi gi gi gi gi gi gi gi gi
) electrical charge.
gi gi
DIF: Comprehension REF: Page 7 g i gi
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics o
g i gi g i gi gi gi gi gi gi
f x-radiation
gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiology
gi
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,DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannucci
gi gi gi gi gi gi gi gi gi
4. Which of the following elements is the simplest atom?
gi gi gi gi gi gi gi gi
a. Hydrogen (H #1) gi gi
b. Helium (He #2) gi gi
c. Nitrogen (N #7) gi gi
d. Oxygen (O #8) gi gi
ANS: A g i
Atomic numbers are assigned from simplest to most complex. Hydrogen is the simplest atom;
gi gi gi gi gi gi gi gi gi gi gi gi gi gi
with a single proton, it has an atomic number of 1. Helium has an atomic number of 2.
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
Nitrogen has an atomic number of 7. Oxygen has an atomic number of 8.
gi gi gi gi gi gi gi gi gi gi gi gi gi
DIF: Comprehension REF: Page 7 g i gi
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics o
g i gi g i gi gi gi gi gi gi
f x-radiation
gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiologygi
5. Which of the following statements is true of orbits or shells in the atom?
gi gi gi gi gi gi gi gi gi gi gi gi gi
a. Protons travel around the nucleus in well-defined shells. gi gi gi gi gi gi gi
b. An atom contains innumerable shells. gi gi gi gi
c. The energy level within each shell is the same.
gi gi gi gi gi gi gi gi
d. The orbiting shell closest to the nucleus has the highest energy level.
gi gi gi gi gi gi gi gi gi gi gi
ANS: D g i
Electrons travel around the nucleus in well- gi gi gi gi gi gi
defined shells. An atom contains a maximum of seven shells. Each of the maximum seven shell
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
s within an atom represents a different energy level. The orbiting shell closest to the nucleus ha
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
s the highest energy level. The K shell is the orbiting shell closest to the nucleus.
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
DIF: Comprehension REF: Page 7 g i gi
OBJ: 2 TOP: CDA, RHS, III.B.2. Describe the characteristics o
g i gi g i gi gi gi gi gi gi
f x-radiation
gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiologygi
6. The binding energy or binding force of an electron is
gi gi gi gi gi gi gi gi gi
a. determined by the distance between the neutrons and protons within the nucleus. gi gi gi gi gi gi gi gi gi gi gi
b. determined by the distance between the orbiting electrons and the nucleus. gi gi gi gi gi gi gi gi gi gi
c. weaker for electrons located in inner shells than in outer shells.
gi gi gi gi gi gi gi gi gi gi
d. determined by the atomic number. gi gi gi gi
ANS: B g i
The binding energy or binding force of an electron is not determined by the distance between
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
the neutrons and protons within the nucleus. The binding energy or binding force of an electr
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
on is determined by the distance between the nucleus and the orbiting electrons and is differe
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
nt for each shell. The binding energy or binding force of an electron is stronger for electrons l
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
ocated in inner shells than for outer shells. The binding energy is not determined by the atomic
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
number.
gi
DIF: Recall REF: Page 7 OBJ: 2 TOP: CDA, N/A gigi gi g i g i g i gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiologygi
mynursytest.store
, DOWNLOAD THE Test Bank for Dental Radiography 6th Edition Iannucci
gi gi gi gi gi gi gi gi gi
7. Which of the following statements is true of ionization?
gi gi gi gi gi gi gi gi
a. An atom that gains an electron will have a negative charge.
gi gi gi gi gi gi gi gi gi gi
b. An atom that loses an electron will have a negative charge.
gi gi gi gi gi gi gi gi gi gi
c. An atom that loses an electron will have a positive charge.
gi gi gi gi gi gi gi gi gi gi
d. An atom that gains an electron has a negative charge, and an atom that loses an
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi g
ielectron has a positive charge. gi gi gi gi
ANS: D g i
This answer is not the best answer. An atom that gains an electron has a negative charge; how
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
ever, an atom that loses an electron has a positive charge. An atom that loses an electron will
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
have a positive charge. An atom that loses an electron has a positive charge; however, an atom
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi g
that gains an electron has a negative charge. An atom that gains an electron will have a negati
i gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
ve charge, and an atom that loses an electron will have a positive charge. An atom that gains
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
or loses an electron and becomes electrically unbalanced is known as an ion.
gi gi gi gi gi gi gi gi gi gi gi gi
DIF: Comprehension REF: Page 9 g i gi
OBJ: 3 TOP: CDA, N/A g i gi g i gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiology
gi
8. An ion pair results when
gi gi gi gi
a. a proton is removed from an atom.
gi gi gi gi gi gi
b. an electron is removed from an atom.gi gi gi gi gi gi
c. a neutron is removed from an atom.
gi gi gi gi gi gi
d. two atoms share a pair of electrons. gi gi gi gi gi gi
ANS: B g i
An ion pair results when an electron is removed from an atom rather than a proton. When an el
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
ectron is removed from an atom in the ionization process, an ion pair results. The atom becom
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
es the positive ion, and the ejected electron becomes the negative ion. An ion pair results whe
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
n an electron is removed from an atom rather than a neutron. A molecule occurs when two ato
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
ms share a pair of electrons.
gi gi gi gi gi
DIF: Recall REF: Page 9 OBJ: 3 gigi gi g i g i
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
g i gi gi gi gi gi gi gi
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of Radiophysics
g i gi gi gi gi gi gi gi gi gi gi gi gi
and Radiobiology
gi
9. (1) Radiation is the emission and propagation of energy through space or a substance in the f
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
orm of waves or particles. (2) Radioactivity can be defined as the process by which certain un
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
stable atoms or elements undergo spontaneous disintegration, or decay, in an effort to attain a
gi gi gi gi gi gi gi gi gi gi gi gi gi gi gi
more balanced nuclear state. gi gi gi
a. Both statements are true. gi gi gi
b. Both statements are false. gi gi gi
c. The first statement is true; the second statement is false.
gi gi gi gi gi gi gi gi gi
d. The first statement is false; the second statement is true.
gi gi gi gi gi gi gi gi gi
ANS: A g i
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