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Basic Concepts Unit 1 (Chapter1/2)
Basic Concepts Unit 1 (Chapter1/2)
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1
Amu=0; charge= -(negative) is?
alpha particle
sievert
gray
beta particle
2
A good definition of energy in any form is?
anything that occupies space and has shape
a force exerted by a body
the ability to do work
the quantity of matter
3
Atoms with electron shell filled are?
chemically very reactive
the chemically inert
usually found in group 1
radioactive
4
Radioactive half life is?
the time necessary for radioactivity to reach one half its original value
the time necessary for one atom to disentegrate
the time necessary for one half the mass to disappear
exactly one half the quantity of material now present
5
Moving from left to right across the periodic table the number of outer shell electrons _______ from one to another
increases by one
decreases by one
decreases by two
increases by two
6
Periodic table represents elements on basis of?
natural occurances
atomic number
number of isotopes
atomic charge
7
Xrays are most like?
gamma rays
alpha rays
beta rays
ultrasound
8
Amu=4; charge=++
beta particle
sievert
coolidge
alpha particle
9
Atoms having same atomic number are atoms of same element
False
True
10
The RAD is related most closely to?
roentgen(R)
dose equivalent
sievert (Sv)
gray(Gy)
11
3.7x10^10 Bq is equal what?
beta
Curie
sievert
Gray
12
How many half-life elapse before the remaining activity is less than 0.1% of the original activity
4
6
8
10
13
Unit of mass is?
volt
mRAD
pound
kilogram
14
The periodic table of elements is attributed to
Niels Bohr
Dimitri Mendeleev
JJ Thomson
John Dalton
15
Collimation restricts the useful xray beam to that part of the body to be imaged
True
False
16
Who made the intensifying screen?
Curie
Pupin
Rollins
Einstein
17
A natural occurring radiation source is?
x-radiation
radioactive fallout
radiopharmaceuticals
cosmic radiation
18
What atoms is the model for modern atomic theory
the Bohr atom
the Dalton atom
the Thomson atom
the Rutherford atom
19
The principle difference between mass and weight is?
there is no difference, they are equal
mass is measured in pounds (lbs) while weight is measured in kilograms (kg)
mass is not dependent on position and weight is a force
weight does not change with position but mass does
20
Radiation is:
stationary particles
mass with a charge
measured in kilograms (kg)
energy emitted and transferred through matter
21
Who is responsible for hot cathode x-ray tube?
Pupin
Coolidge
Curie
Rollins
22
Z number is
The number of electrons surrounding the nucleus
The number of neutrons surrounding the nucleus
The nucleus is held together by electrostatic protong-proton attraction
The number of protons surrounding the nucleus
23
Electrical energy is
electron moves through an electric potential difference (voltage)
energy of electricity
ability to do work
electrical energy contained within the nucleus
24
100 or 10^2 REM equals what?
Sievert
Gray
REM
beta
25
Max number of electrons in 3rd shell of an atom is?
32
16
18
8
26
How many different types of particles in nucleus of atom
3
1
4
2
27
In the periodic table of elements, group number identifies:
the number of electrons in the outer shell
the max number of electrons allowable in the outer shell
total number of electrons in the atom
the principle quantum number of the outermost shell
28
Nuclear energy is the energy that is contained within the nucleus of an atom
True
False
29
How many cm in inch
2.54
2.53
2.55
2.45
30
The building blocks of matter are?
atoms
protons, neutrons, electrons
molecules and atoms
molecules
31
When ionization by Xray occurs the result is?
a target atom becomes a positive ion
the negative ion is the ion pair
the negative ion is electromagnetic radiation
a target atom becomes a negative ion
32
When a radionuclide undergoes beta emission:
a neutron undergoes conversion to a proton
an x-ray is always released
a gamma ray is always released
a proton undergoes conversion to a neutron
33
The Roentgen (R) unit of measurement relates to:
noninonizing radiation
a dose equivalent
radiation absorbed dose
radiation in air
34
Ionization occurs when an electron is ejected from its orbit
True
False
35
Potential energy is the ability to do work by virtue of position
True
False
36
Who came up with theory of relativity?
Rollins
Coolidge
Curie
Einstein
37
Unit of dose equivalent or occupational exposure
REM
beta
Gray
Sievert
38
Ionization is the:
transfer of energy
removal of an electron from an atom
ability to do work
energy emitted through space
39
The difference between x and gamma rays is?
gamma rays have higher energy
gamma rays travel faster
their origin
xrays produce bremsstrahlung radiation and gamma rays do not
40
100 or 10^2 RAD is equal to what?
sievert
bequerel
Gray
curie
41
Thermal energy is the energy of motion at the molecular level
True
False
42
The atomic number is
is the number of neutrons
has a symbol A
is the number of electrons
is the number of protons
43
Beta decay:
occurs only with long half life isotopes
results in the gain of one proton
occurs only with very heavy elements
results in the loss of 1 amu
44
What would be considered electromagnetic ionizing radiation?
Gamma rays
microwaves
Beta rays
Ultrasound
45
The equation to covert Celsius to Fahrenheit is 5/9(F-32)
False
True
46
Is a snowball considered matter?
True
False
47
Einstein famous equation E=mc^2, c stands for what?
mass-energy equivalence
the theory of relativity
speed of light
acceleration of mass
48
Electromagnetic energy includes sound and diagnostic US
False
True
49
The atomic mass number of atom is given by?
number of protons and number of neutrons
number of protons
number of neutrons
number of electrons
50
Mass is:
building blocks of matter
anything that occupies space
quantity of matter
measured in kilograms
51
The equation to convert fahrenheit to celsius is 5/9 (F-32)
False
True
52
Who is responsible for collimation/filtration?
Curie
Coolidge
Pupin
Rollins
53
Matter is anything that occupies space and has mass
False
True
54
Kinetic energy is the energy of motion
False
True
55
The chemical energy is:
energy at a molecular level
when an electron moves through an electric potential
energy of motion
energy released by chemical reaction
56
Horizontal rows on periodic table are?
shells
groups
families
periods
57
Naturally occurring radiation source is
xradiation
radiopharmaceuticals
cosmic radiation
radioactive fallout
