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Bushong Ch 3
Electromagnetic Energy
| Question | Answer |
|---|---|
| The four properties of photons are: | velocity, amplitude, frequency and wavelength |
| What would be termed as the smallest quantity of any type of electromagnetic radiation? | photon |
| Which of the following would be the velocity of all electromagnetic radiation? | the speed of light |
| The rise and fall of a sine wave with respect to time is called | amplitude |
| Cycles per second is a unit for ____________ and is measured in ___________. | frequency, Hertz |
| If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its frequency must: | decrease |
| The reduction of radiation intensity due to absorption and scattering is called _________. | attenuation |
| The intensity of radiation on an object is reduced with distance because the radiation | spread out over a greater area |
| What has the ability to ionize matter | xrays and gamma rays |
| The diagnostic range of x-ray energy is | 69.5kEv |
| The energy of a photon is directly proportional to its | frequency |
| X-rays are indentified by their | energy |
| Where is gamma produced? | nucleus of a radioactive atom |
| Photons tend to interact with matter __________ their wavelength | easily when its approximately the same size as |
| Photons with the highest frequencies have the | shorter wavelengths |
| The terms "translucent", and "refraction" are associated with the _________ spectrum | electomagnetic |
| The wavelength of white light is altered as it passes through a prism, this processed is called | refraction |
| The only difference between x-ray and gamma rays is their | origin |
| True or False: Visible light can interact with matter in one or more of the following ways: reflected, absorbed, attenuated, and/or, transmitted. | false |
| The inverse square law relates to | intensity and distance |
| The "E" in the formula E=mc2 stands for | Energy(J) |
| This physicist developed a theory based on the relationship between energy and frequency being that they are directly proportionate in nature. This constant of proportionality is called: | Planck's constant |
| The "maximum height of the peaks or valleys (in either direction) from zero", defines which of the four properties of photons? | amplitude |
| Which portion of the electromagnetic spectrum can be seen and sensed by humans | visible light |
| The equation for quantum mechanics was developed by E=hf | Maxwell Planck |
| T or F: Xradiation is artificially generated | true |
| The inverse square law states that intensity will vary as what power of the distance | second (squared) |
| What happens to wavelength as frequency decreases | it increases |
| What is differential absorption | the product of absorption, transmission and scatter |
| Which end of the electromagnetic spectrum will act more like waves | the low end |
| Which end of the electromagnetic spectrum will act more like particles | the high end |
| Structures that transmit xrays without altering the path of most of the photons is | radiopaque |
| Electromagnetic energy is a combination of both electric and magnetic fields_____________ from/to one another in sinusoidal fashion | perpendicular |
| Describe the amplitude of the sine wave | zero to maximum |
| What energies on the electromagnetic spectrum have the ability to ionize matter | xrays and gamma rays |
| The inverse square law relates to | intensity and distance |
| Which part of the electromagnetic spectrum can be seen by humans | visible light |
| An xray can be seen as two sine waves which run perpendicular to each other. What do the sine waves represent | the electric and magnetic fields |
| The grouping of energies with ranging frequencies and wavelengths | electromagnetic spectrum |
| Frequency refers to the number of waves that go by a specific point in one__________ | second |
| What is the term used to describe the lowest point of a wave | valley |
| The distance between similar points on a sine wave | wavelength |
| The deviation of course that occurs when photon of visible light traveling in straight lines pass from one transparent medium to another | refraction |
| What are the two types of visible light | infrared and ultraviolet |
| T or F: Infrared energy is higher than ultraviolet | false |
| Example of radiopaque | bone |
| Example of radiolucent | tissue |
| Example of translucent | frosted glass |
| Example of transparent | window glass |
Created by:
lkdickson
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