Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Radiation Physics I
Introduction
| Question | Answer |
|---|---|
| What Fundamental units of measurement do we use? | inchces, pounds, seconds |
| Definition of Work? | applying a force over a distance |
| Definition of Momentum? | product of mass of an object x velocity (speed) |
| Definition of Force? | push or pull exerted on object |
| Definition of Velocity? | speed |
| Definition of Power? | rate of doing work |
| Name the forms of energy. | Chemical, electrical, kinetic, potential, thermal |
| What is chemical energy? | release by chemical reaction |
| What is electrical energy? | movement of e- (current) |
| What is kinetic energy? | energy in motion |
| What is potential energy? | energy at rest |
| What is thermal energy? | from heat |
| State the unit of measurements of temperature? | F , C, Kelvin |
| Definition of x-ray | ionizing electromagnetic radiation |
| Definition of gamma | naturally occurring, comes from within the nucleus |
| Definition of alpha | heavy, absorbs by a piece of paper |
| Definition of beta | high speed e-, that will penetrate up to 5cm of skin |
| Definition of valence | determines chemical binding ability of atom |
| What are types of chemical bonding and definition | 1.) covalent bond = sharing of a e- 2.) ionic bond = attraction between 2 ions |
| Definition of electromagnetic energy and examples | oscillating electric and magnetic fields that travel in a vacuum with the velocity of light. EXAMPLES = x-ray, gamma |
| Definition of matter and examples | anything that occupies space and has matter.EXAMPLES = solid, liquid, gas |
| Definition of analysis | collect data |
| Definition of synthesis | combination of components to form a connected whole |
| Definition of scientific law | proven idea |
| Definition of element | substance that CAN'T be broken down any further without changing its chemical properties |
| Definition of atom | smallest particle that has all the properties of an element |
| Definition of compound | amount of a molecule |
| Definition of ionization | when an atom has too many or too few electrons |
| Definition of octet | if an element has exactly 8 e- in outer most shell, it is considered stable |
| What is atomic #? | # of protons in the nucleus (Z#) |
| What is atomic mass? | # of protons and neutrons in the nucleus (A#) |
| Definition of a nucleon | proton and neutron in the nucleus |
| Definition of isotope | same atomic # (Z#), but different atomic mass (A#) |
| What is the horizontal and vertical portion of the periodic table called? | * vertical= family (group 1-8)* horizontal = period |
| What is the family on the periodic table? | same chemical properties |
| What is the period on the periodic table? | same # of electron shells, but different chemical properties |
| What is LET? | linear energy transfer = measure of the rate of which energy is transferred ionizing radiation to soft tissue |
| What is curie (bq)? | * curie = conventional unit of measurement of radioactivity* bq = standard unit of measurement of radioactivity |
| What is physical half-life? | amount of time it takes for radioactive source to reduce to ½ of initial intensity |
| What is biological half-life? | amount of time of radioactive source in the BODY to reduce by ½ of initial intensity |
| State the Laws of Conservation of Energy & Matter | matter can neither be created nor destroyed, but changed from one form to another |
| State the formula to compute # of e- permitted per shell | 2n(2) |
| What are the 4 causes of ionization? | 1.) Exposure of matter to x-ray or gamma (happens in pt body)2.) Exposure of matter to stream of e- (happens in tube)3.) Exposure of certain elements to light (in IRD & film screen crystals)4.) Spontaneous breakdown of a radioactive element |
| What is Physics? | study of matter and energy and interactions of energy and matter |
| What is Chemistry? | study of interactions of matter |
| How many sV per rem? | 1 sV = 100 rem |
| How many R per gy? | 100 R = 1 gy |
| What is the Conventional unit of measurement? | rem, rad, R |
| What is the Standard international unit of measurement? | gy, sV, C |
| Newton’s Law of Motion | Inertia = property of matter that acts to resist a change in its state of motion * Force = mass x acceleration (push or pull) * for every action there is an equal and opposite reaction |
Created by:
sr4095
Popular Radiology sets