Chapter 3 Radiologic Sciences Questions with 100% Complete Solutions Graded to Pass

What are the properties of Electromagnetic Energy? - Frequency, wavelength, velocity, amplitude Which property of EM energy is constant? - Velocity A small bundle of energy, sometimes called a quantum - Photon How fast do photons travel? - The speed of light, 3x10^8 Photons travel in a ___ wave - Sine one-half the range from crest to valley in a sine wave: - Amplitude The rate of rise & fall; is equal to the number of crests or valleys that pass a point of observation per unit of time - Frequency - expressed in cycles per second and the unit of measure is Hertz. 1Hz = 1 cycle/second The distance from one crest to another crest, or one valley to another valley - Wavelength - represented by Greek symbol Lambda. At any given velocity, frequency and wavelength are inversely proportional. True or False? - True If frequency is increased, wavelength is ___ - Decreased Three regions important to radiologic technologists on the EM Spectrum: - Visible Light (Roy G Biv), X-radiation and Radiofrequency On the visible light spectrum, what is the lowest frequency? - Red Name the EM spectrum from lowest to highest frequency: - Radiofrequency, Microwaves, Infrared, Visible Light (Roy G Biv), Ultraviolet (UV), X-rays, Gamma Rays What has the highest frequency on the EM spectrum? - Gamma Rays Frequency x wavelength = - Velocity Anything that can be measured in an orderly, continuous progression of minute degrees, or a broad range of values - Spectrum The EM spectrum shows what three different scales? - Energy (eV), frequency & wavelength