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Radiographic Physics

Johnston, 1st Ed.: Chapter 3

What is the smallest particle of an element that retains the characteristics of the element? Atom.
X-rays travel as bundles of energy called __________. Photons.
What constitutes atomic mass? # of protons + # of neutrons in the nucleus.
The law stating that the outer shell of an atom can contain no more than 8 electrons is the _____________ ________. Octet rule.
Electromagnetic radiation is both ________ and ___________. Magnetic; electrical.
Electromagnetic radiation can be either of wave quality or particle quality, depending on energy level. This is called _____ ______ ______. Wave-particle duality.
Electromagnetic radiation travels in bundles of energy called ________________. Photons.
At what speed do x-rays travel? The speed of light or 186,000 mph
Waves of radiation are called ___________ waves. Sine.
Wavelength is defined as the _______ to _______ of the wave. Peak; peak.
Frequency is defined as the number of ________ passing a point per unit time. Waves.
The speed of x-rays is based on the fact that they are a form of _______________ radiation. Electromagnetic.
Wavelength and frequency are _________ proportional to each other. Inversely.
The inverse square law relates the intensity of (light/x-rays) to __________________. Distance.
Alpha and beta particles are similar to x-rays and gamma rays in that they have the ability to __________matter. Ionize.
The rate at which a radioactive substance decays is called the _____ ______. Half life.
The removal of an electron from an atom is known as: Ionization.
The atom and the electron that was removed from it are called an ______ ______. Ion pair.
Gamma rays originate from the ________. Nucleus.
X-rays originate from interactions between ______and _____. Electrons and atoms.
An example of an element with unstable nuclei is considered _______________. Radioactive.
A radioactive element would be an ____________. Isotope.
The difference between an electron and a beta particle is their ___________. Origin.
When compared with a beta particle, the alpha particle is much _________. Larger.
Created by: djhughes