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Essentials of Radiographic Physics and Imaging 3rd Edition By James Johnston; Terri L. Fauber $17.99   Add to cart

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Essentials of Radiographic Physics and Imaging 3rd Edition By James Johnston; Terri L. Fauber

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Essentials of Radiographic Physics and Imaging 3rd Edition By James Johnston; Terri L. Fauber

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  • September 13, 2024
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Test Bank For Essentials of Radiographic Physics and Imaging
3rd Edition By James Johnston; Terri L. Fauber
What does an alpha particle consist of? - ANSWER: 2 protons and 2 neutrons

What are x ray and gamma ray similarities? - ANSWER: They are the highest energy
members and have the ability to ionize matter.

What are two types of ionizing radiation? - ANSWER: particulate and
electromagnetic

How do x rays and gamma rays differ? - ANSWER: Each originate from a different
energy source.

gamma rays originate from - ANSWER: nuclei of atoms and represent the excess
energy the atom is giving off to reach a stable state.

x-rays originate through - ANSWER: interactions between electrons and atoms

X-rays are produced when - ANSWER: fast moving electrons within the x-ray tube
strike the atoms of the metal in its target

What are two types of electromagnetic radiation? - ANSWER: Ionizing and non-
ionizing

Define electromagnetic radiation - ANSWER: An electric and magnetic disturbance
traveling at the speed of light.

Tanning beds use what type of electromagnetic radiation? - ANSWER: Ultraviolet

Why do some objects appear black? - ANSWER: represents absorption of all color
wavelengths.

If an x-ray beam has an intensity of 1.2 mGy at 40 inches, what is the intensity of the
beam at 60 inches? - ANSWER: 0.53


What is the unit of measurement for frequency? - ANSWER: Hertz (Hz)

What is common use for radio waves? - ANSWER: MRI- Magnetic Resonance Imaging

Define radioactive decay - ANSWER: A radioactive element giving off excess energy
and particles to regain stability.

, Name one thing that all of the members of the electromagnetic spectrum have in
common. - ANSWER: They have the same velocity
Speed of light

how to the members of the electromagnetic family differ? - ANSWER: have the same
velocity however they vary in energy, wavelength, and frequency.

What does intensity do as distance from the source increases? - ANSWER: Decreases

How are microwaves used to heat up food? - ANSWER: They hit the atoms of the
food giving them excess energy causing a vibration of atoms and molecules.

If the frequency of electromagnetic radiation decreases what will the wavelength
do? - ANSWER: Increase

Which of the following do not originate from an unstable nucleus? Gamma rays, x
rays, alpha particles, or beta particles? - ANSWER: x-rays

Define wavelength - ANSWER: Measure of distance from the peak of one wave to the
peak of the next wave.

Who developed the electromagnetic theory? - ANSWER: James Maxwell

What are the characteristics of electromagnetic radiation? - ANSWER: *carries
energy in waves
*causes magnetic/electrical disturbances
*Travels at the speed of light
*can ionize matter and cause biological damage
*2 types ionizing /non-ionizing
*needs no medium (no mass)
*can travel through a vacuum

What are the 2 types of disturbances caused by electromagnetic radiation? -
ANSWER: *electric
*magnetic

1 kilohertz (kHz) is equal to:_____hertz - ANSWER: 1,000

Define amplitude - ANSWER: Maximum height of the wave

Which has the shortest wavelength/most energy?
X-rays or visible light - ANSWER: X- rays

Is E=hf direct proportionality or inverse - ANSWER: Direct -if energy increases so
does frequency

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