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Rad135 Ch2 Radiation Concepts
Test Description: This content covers chapter 2 (Radiation Concepts) from the text to help you prepare for the midterm exam in Rad135.
Instructions: Answer all questions to get your test result.
1) What is the term for the quantity of matter contained in an object?
A
space
B
matter
C
weight
D
mass
2) What is the smallest subdivision of an element that still retains the characteristics of that element?
A
proton
B
molecule
C
neutron
D
atom
3) What is the process of adding or removing an electron from an atom?
A
fusion
B
atomization
C
ionization
D
electrification
4) What is considered to be the energy of motion?
A
kinetic energy
B
nuclear energy
C
potential energy
D
chemical energy
5) What is the result of the movement of electrons in a conductor?
A
nuclear energy
B
electrical energy
C
mechanical energy
D
chemical energy
6) What is the outcome of Einstein's work?
A
particle theory
B
law of conservation
C
string theory
D
wave theory
7) What is the relationship between subatomic particles in a neutral (stable) atom?
A
The mass of protons and electrons is equal
B
The number of nucleons and electrons is equal
C
The number of protons and neutrons is equal
D
The number of protons and electrons is equal
8) How are frequency and wavelength related?
A
As one increases, the other decreases
B
They have no effect on eachother
C
As frequency increases, wavelength increases
D
They are directly related
9) What is the velocity of a 72 keV photon?
A
3 x 10^6 km/sec
B
3 x 10^8 m/sec
C
72,000 m/s
D
none of the above
10) What is the wavelength of an x-ray with a frequency of 1.72 x 10^17 Hz?
A
5.73 x 109m
B
1.74 nm
C
none of the above
D
5.73 nm
11) A term used for both protons and neutrons is:
A
quarks
B
atomic number
C
atoms
D
nucleons
12) What is the unit of measure for x-ray quantity (exposure)?
A
radiation absorbed dose (rad)
B
gray
C
Roentgen (R)
D
radiation equivalent man (rem)
13) According to the octet rule, ____.
A
an atom with eight electrons always has a negative charge
B
the outermost electron shell of an atom can hold a maximum of eight electrons
C
only eight energy levels can have electrons
D
the outermost electron shell of an atom can hold 2n^3 electrons
14) Aluminum has an atomic number of 13. How many protons does it have?
A
depends on how many electrons are present
B
26
C
13
D
none of the above
15) What is the orbital shell that is closest to the nucleus?
A
E shell
B
K shell
C
O shell
D
A shell
16) A moving object has ____ energy.
A
electromotive
B
electrostatic
C
potential
D
kinetic
17) All of the following are energy forms except:
A
nuclear
B
audio
C
thermal
D
electrical
18) An atom in a stable state has an electrical charge of:
A
negative
B
positive
C
neutral
D
plus eight
19) Almost all of the kinetic energy of the incident electrons is converted to: ____.
A
x-ray photons
B
heat
C
kinetic energy
D
light
20) Which of the following happens to the amount of electrons that are able to cross the tube when the mA doubles?
A
cut in half
B
doubles
C
quadruples due to the inverse square law
D
depends on the kV
*select an answer for all questions
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