CH. 1 Essential Concepts of Radiologic Science Questions with 100% Complete Solutions

Mass - The quantity of matter; remains unchanged regardless of its state, it can be transformed from one size, shape, and form to another. Electron Volt (eV) - In radiology, what is the unit most often used to measure energy? False- similar to matter, energy can exist in several forms - True or False Energy can exist in only one form Energy - Is the ability to do work Potential Energy - Is the ability to do work by virtue of position. Kinetic Energy - Is the energy of motion. It is possessed by all matter in motion. Chemical Energy - Is the energy released by a chemical reaction. An important example of this type of energy is that which is provided to our bodies through chemical reactions involving the foods we eat. Biochemistry - When chemical energy is at the molecular level, this area of science is called _______. Electrical Energy - Represents the work that can be done when an electron moves through an electric potential difference (voltage). Thermal Energy (heat) - Is the energy of motion at the molecular level. It is the kinetic energy of molecules and is closely related to temperature. Nuclear Energy - The energy that is contained within the nucleus of an atom. Electromagnetic Energy - Is perhaps the least familiar form of energy. It is the type of energy that is used in X-ray imaging. - Radiowaves - Microwaves - Ultraviolet - Infrared - Visible Light Radiation - Is the energy emitted and transferred through space. Visible Light - A form of electromagnetic energy that is radiated by the sun and is electromagnetic radiation. Exposed or Irradiated - Matter that intercepts radiation and absorbs part or all of it is said to be what? Ionizing Radiation - A special type of radiation that includes X-rays. It is any type of radiation that is capable of removing an orbital electron from the atom with which it interacts. Ionization - Occurs when an X-ray passes close to an orbital electron of an atom and transfers sufficient energy to the electron to remove it from the atom. Ion Pair - The orbital electron and the atom from which it was separated are called an ____ ____. Negative; Positive - The electron is a _____ ion and the remaining atom is a ____ ion. Ionizing Radiation - This is an example of what? Millisieverts (mSv) - The unit of effective dose. It is used to express radiation exposure of populations and radiation risk in those populations. 1. Cosmic Rays 2. Terrestrial Radiation 3. Internally Deposited Radionuclides 4. Radon - Natural environmental radiation consists of what 4 components? Cosmic Rays - Are particulate and EM radiation emitted by the sun & stars.