Principles of Radiographic Imaging Exam 1 Part 1
Questions and Answers
MATTER AND ENERGY - Answer-Mass is the quantity of matter described by its
energy equivalence
Weight is the force exerted on a body under the influence of gravity
Energy is measured in joules (J)
Electron volt (eV) is used in radiology
/.Types of Energy
(PKCETNE) - Answer-*Potential energy* is the ability to do work by virtue of position
Energy in a stored state (battery sitting on shelf)
*Kinetic energy* is the energy of motion
Anything moving has kinetic energy and has the ability to do work because of their
motion (the battery can be transform potential energy to kinetic energy by turning a
motor)
*Chemical energy* is the energy released by a chemical reaction (burning of wood)
*Electrical energy* the work done when electron moves through a potential difference
(voltage)
*Thermal energy (heat)* is the energy of motion at the molecular level (burning of wood)
*Nuclear energy* is the energy contained with the nucleus of an atom (splitting of atoms
to release energy)
*Electromagnetic (EM) energy* is the electric and magnetic disturbance in space
This type of energy is important in x-ray imaging
This involves radio waves, microwaves, UV, infrared & visible light
/.Einstein's Theory - Answer-According to Einstein's mass-energy equivalence, matter
and energy are interchangeable
Mass-energy
E=mc2 (E=energy, m=mass, c=velocity of EM radiation in a vacuum)
/.Radiation - Answer-Matter that absorbs part of the energy being transmitted is said to
be exposed or irradiated
Patients exposed to x-rays have been irradiated
Ionizing radiation includes x-rays
This type of radiation is capable of removing orbital electrons from atoms (matter)
Questions and Answers
MATTER AND ENERGY - Answer-Mass is the quantity of matter described by its
energy equivalence
Weight is the force exerted on a body under the influence of gravity
Energy is measured in joules (J)
Electron volt (eV) is used in radiology
/.Types of Energy
(PKCETNE) - Answer-*Potential energy* is the ability to do work by virtue of position
Energy in a stored state (battery sitting on shelf)
*Kinetic energy* is the energy of motion
Anything moving has kinetic energy and has the ability to do work because of their
motion (the battery can be transform potential energy to kinetic energy by turning a
motor)
*Chemical energy* is the energy released by a chemical reaction (burning of wood)
*Electrical energy* the work done when electron moves through a potential difference
(voltage)
*Thermal energy (heat)* is the energy of motion at the molecular level (burning of wood)
*Nuclear energy* is the energy contained with the nucleus of an atom (splitting of atoms
to release energy)
*Electromagnetic (EM) energy* is the electric and magnetic disturbance in space
This type of energy is important in x-ray imaging
This involves radio waves, microwaves, UV, infrared & visible light
/.Einstein's Theory - Answer-According to Einstein's mass-energy equivalence, matter
and energy are interchangeable
Mass-energy
E=mc2 (E=energy, m=mass, c=velocity of EM radiation in a vacuum)
/.Radiation - Answer-Matter that absorbs part of the energy being transmitted is said to
be exposed or irradiated
Patients exposed to x-rays have been irradiated
Ionizing radiation includes x-rays
This type of radiation is capable of removing orbital electrons from atoms (matter)
