Nature of Surroundings
What is Matter
Matter - is anything that occupies space and has mass
What is the definition of potential energy and give an example
Potential energy - is the ability to do work by virtue of position
Spring on a screen door
guillotine blade
Roller coaster
.000078
What is the largest source of natural radiation
Radon - largest source of natural radiation
The first x-ray was of what body part
Hand
List 2 types of radiation injury
Skin damage
Loss of hair
Anemia
Blood disorders
What are 3 basic measurable quantities in Physics
Mass
Length
Time
What is Mass
Mass- is the quantity of matter contained in an object
What is Energy and what is it measured in?
Energy is the ability to do work
Measured in Joules
Convert 924800000 to scientific notation
9.248 x 10^8
What is the largest source of man-made ionizing radiation
Diagnostic X-rays are the largest man-made source of ionizing radiation
When was x-ray discovered?
November 8th, 1895
Who is radiation protection for
Imaging personnel and patients
What is Air Kerma
Air Kerma (Kinetic Energy Released in Matter) - is the Unit of Radiation Exposure
What is Gravity
Gravity - the force that attracts a body toward the center of the earth, or toward any other physical body having mass
What is the definition of kinetic energy and give me an example
Kinetic energy - is the energy of motion
Moving vehicle
Turning of a windmill
Falling guillotine blade
Matter that intercepts radiation and absorbs part or all of it is said to be
exposed or irradiated
What are the two categories of ionizing radiation
Natural environment radiation
Man-made radiation
Who discovered x-ray
Dr. Wilhelm Conrad Roentgen
Give 2 examples of protective equipment
Lead apron
Lead Gloves
In the radiologic unit for gray, the sub text a and t represent what?
A=air
T= tissue
What is the scientific unit of mass?
Kilogram
Please list 6 out of the 9 different types of energy
Potential energy
Kinetic energy
Chemical energy
Electrical energy
Thermal energy (heat)
Nuclear energy
Electromagnetic energy
Radiation
Ionizing radiation
What 3 forms of electromagnetic radiation have sufficient energy to ionize
X-rays, gamma rays, and ultraviolet rays are the only forms of electromagnetic radiation with sufficient energy to ionize
What are the 4 components of environmental radiation
Natural Environmental Radiation has 4 components
Cosmic rays
Terrestrial radiation
Internally deposited radionuclides
Radon
What kind of tube was used in the discovery of X-rays
Crookes Tube
What does collimation do
Collimation - restricts the useful x-ray beam to that part of the body to be imaged sparing adjacent tissue from unnecessary radiation exposure
what does Becquerel measure?
Unit of radioactivity
How many grams are in 1 kilogram?
1000 grams
List 4 out of the 7 types of electromagnetic energy
X-rays
Gamma rays
Radio waves
Microwaves
Ultraviolet light
Infrared light
Visible light
What is Ionizing Radiation
Ionizing radiation - is any type of radiation that is capable of removing an orbital electron from the atom with which it interacts
List 3 other sources of man-made radiation
nuclear power stations and other industrial applications, Consumer products such as watch dials, exit signs, smoke detectors and airport surveillance systems
Throughout Roentgen's discovery, he found that x-rays travel how and how fast
in a straight line, and at the speed of 2x10⁸ meters per second in a vacuum
What is ALARA
as low as reasonably achievable
Radiation monitoring badge is analyzed in what unit
Sievert