LRA 211 FINAL REVIEW PART 2
Smallest unit of measurement, basic building block of matter. - answers - atom
Is also a measure of the amount of energy necessary to split an atom (break it apart) -
answers - binding energy
An atom has defined energy levels, each at a different distance from the nucleus called
- answers - electron shells
______ of an atom refers to the number of protons it contains in its nucleus - answers -
the atomic number
Is the number of protons and neutrons an atom has in its nucleus - answers - the
atomic mass number
_______ are the simplest forms of substances that compose matter - answers -
elements
Two or more atoms bonded together form a - answers - molecule
Combinations of elements bonded together. - answers - chemical compounds
Refers to elements whose atoms have the same number of protons but a different
number of neutrons. - answers - isotope
Refers to elements whose atoms have the same number of neutrons but a different
number of protons. - answers - isotone
Atoms in each period have the same number of - answers - electron shells
Atoms in each group have the same number of ______ in the outermost shell -
answers - electrons
Is based on two atoms sharing electrons that then orbit both nuclei - answers -
covalent bonding
Is based on the attraction of opposing charges. - answers - ionic bonding
Is very similar in that it has no mass, carries energy in waves as electric and magnetic
disturbances in space, and travels at the speed of light - answers - electromagnetic
radiation
Electromagnetic radiation is a form of energy that originates from the - answers - atom
Refers to the maximum height of a wave. - answers - the amplitude
, Refers to the number of waves that pass a given point per second - answers -
frequency
Used to calculate the change in the intensity (quantity) of radiation reaching the image
receptor with changes in distance. - answers - inverse square law
Each time an orbital electron moves to a lower orbit, a _________ is produced. -
answers - characteristic photon
K-shell electrons in tungsten have the strongest binding energy at - answers - 69.5 kev
For a filament electron to remove this orbital electron, it must possess ________ -
answers - energy equal to or greater than 69.5 kev.
Shell providing electron aka - answers - farther shell
Shell with vacancy aka - answers - closer shell
The attraction of the filament electron to the nucleus causes it to slow down and change
direction. The resultant loss of energy is given off as a - answers - brems photon
______ refers to the use of a material, usually aluminum (al) or aluminum equivalent, to
absorb x-ray photons from the x-ray beam. - answers - filtration
The combination of inherent and added filtration is referred to as - answers - total
filtration
_________ may attach to the collimator or be placed adjacent to or on the anatomic
area of interest. They serve to filter a portion of the beam to balance exposure to the
image receptor (ir) and improve image quality. - answers - compensating filters
An increase in quantity increases the ________ delivered to the patient. - answers -
radiation dose
If kvp is doubled, the intensity (quantity) increases by - answers - a factor of four
________ refers to the penetrating power of the x-ray beam. - answers - beam quality
________ refers to those x-ray photons that are transmitted through the body and reach
the image receptor - answers - penetration
Photons that reach the image receptor create the dark shades of the image; areas
where no photons reach result in the light or clear areas of the image - answers - true
Smallest unit of measurement, basic building block of matter. - answers - atom
Is also a measure of the amount of energy necessary to split an atom (break it apart) -
answers - binding energy
An atom has defined energy levels, each at a different distance from the nucleus called
- answers - electron shells
______ of an atom refers to the number of protons it contains in its nucleus - answers -
the atomic number
Is the number of protons and neutrons an atom has in its nucleus - answers - the
atomic mass number
_______ are the simplest forms of substances that compose matter - answers -
elements
Two or more atoms bonded together form a - answers - molecule
Combinations of elements bonded together. - answers - chemical compounds
Refers to elements whose atoms have the same number of protons but a different
number of neutrons. - answers - isotope
Refers to elements whose atoms have the same number of neutrons but a different
number of protons. - answers - isotone
Atoms in each period have the same number of - answers - electron shells
Atoms in each group have the same number of ______ in the outermost shell -
answers - electrons
Is based on two atoms sharing electrons that then orbit both nuclei - answers -
covalent bonding
Is based on the attraction of opposing charges. - answers - ionic bonding
Is very similar in that it has no mass, carries energy in waves as electric and magnetic
disturbances in space, and travels at the speed of light - answers - electromagnetic
radiation
Electromagnetic radiation is a form of energy that originates from the - answers - atom
Refers to the maximum height of a wave. - answers - the amplitude
, Refers to the number of waves that pass a given point per second - answers -
frequency
Used to calculate the change in the intensity (quantity) of radiation reaching the image
receptor with changes in distance. - answers - inverse square law
Each time an orbital electron moves to a lower orbit, a _________ is produced. -
answers - characteristic photon
K-shell electrons in tungsten have the strongest binding energy at - answers - 69.5 kev
For a filament electron to remove this orbital electron, it must possess ________ -
answers - energy equal to or greater than 69.5 kev.
Shell providing electron aka - answers - farther shell
Shell with vacancy aka - answers - closer shell
The attraction of the filament electron to the nucleus causes it to slow down and change
direction. The resultant loss of energy is given off as a - answers - brems photon
______ refers to the use of a material, usually aluminum (al) or aluminum equivalent, to
absorb x-ray photons from the x-ray beam. - answers - filtration
The combination of inherent and added filtration is referred to as - answers - total
filtration
_________ may attach to the collimator or be placed adjacent to or on the anatomic
area of interest. They serve to filter a portion of the beam to balance exposure to the
image receptor (ir) and improve image quality. - answers - compensating filters
An increase in quantity increases the ________ delivered to the patient. - answers -
radiation dose
If kvp is doubled, the intensity (quantity) increases by - answers - a factor of four
________ refers to the penetrating power of the x-ray beam. - answers - beam quality
________ refers to those x-ray photons that are transmitted through the body and reach
the image receptor - answers - penetration
Photons that reach the image receptor create the dark shades of the image; areas
where no photons reach result in the light or clear areas of the image - answers - true
