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
SF ch. 4 electricity
| Question | Answer |
|---|---|
| A form of energy that produces light, heat, magnetic and chemical changes. | Electricity |
| materials that best transport electricity to a load, i.e. copper, water | Conductors |
| Materials that do not allow current to pass through them.i.e. silk, wood, plastic, rubber | Insulator |
| unit of electric strength | Amp |
| unit of electric pressure | Volt |
| unit of electric resistance | Ohm |
| measure of how much electricity is being used | Watt |
| 1,000 milliamperes is equal to | 1 ampere |
| Electrons move at an even rate; flows in one direction. | Direct current |
| Sources of electricity | Batteries and Generator |
| More current flows than the line is designed to carry. | Overload |
| this can occur when an extension cord with multiple plugs is used to attach 4 or 5 appliances to one wall socket. | Fire |
| Reusable device that breaks the flow of current when an overload occurs. | Circuit breaker |
| Passes through small part of the body | Local shock |
| Passes through the nervous system | General Shock |
| Application of special currents that have certain effects on the skin. | Electrotherapy |
| negatively charged electrode. | Cathode |
| positively charged electrode. | Anode |
| Direct current- low volt and high amp | Galvanic Current |
| Process of forcing an acid or alkali into the skin by applying current to the chemical | Phoresis |
| Produces an alkaline reaction, which can force alkaline soluions to penetrate the skin. | Anaphoresis |
| Introduces water-soluble products into the skin. | Iontophoresis |
| alternating current, produces a mechanical effect, may preserve muscle tone. | Faradic current |
| High frequency current "violet ray", alternating current, different voltages produce heat. | Tesla Current |
| The slight seperation of the electrode from the skin creates a mild, ___________ sensation. | Stimulating |
| Heat energy is transferred from a hotter body to a oooler body in _____ ways. | Three |
| transfer of heat via direct contact. | Conduction |
| transfer of heat via liquid or gas. | Convection |
| transfer of heat through a vacuum. | Radiation |
| White light is also known as | Combination light |
| Visible light can be broken into its individual wavelengths by a________. | Prism |
| The longest wavelengths of the visible spectrum are | Red |
| Two kinds of light used in the salon are | Flourescent and Incandescent |
| _______ percent of sunlight is composed of invisible rays beyond red, Infrared. | eighty percent |
| The light must be placed _____ from the client's face. | thirty inches |
| Ultraviolet rays are also known as _________. | Actinic rays |
| Small doses of UV light can tan the skin and may help the body produce ________. | Vitamin D |
| UV light is __________ and kill bacteria that causes skin infections. | Germicidal |
| The client's _____ should be protected while receiving treatment using UV light therapy. | Eyes |
Created by:
algray76
Popular Occupational Therapy sets