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Chapter 13
Basics of Electricty
| Question | Answer |
|---|---|
| Electricity does not occupy space or have physical or chemical properties. | True |
| Distilled water is a particularly good conductor. | False |
| There are two types of electric current: direct and converted. | False |
| Normal electric wall sockets that power a hair dryer or curling iron are 220 volts. | False |
| The heating element in a hair dryer heats up because it is not large enough to carry the electric current. | True |
| A wall plate is also known as facial stimulator. | True |
| Microcurrent travels throughout the entire body. | False |
| UV prompts the skin to produce vitamin D, a fat-soluble vitamin that promotes mineralization of bones. | True |
| Ultraviolet A light has the longest wavelength of the UV light spectrum. | True |
| Electricity is a form of energy that, when in motion, exhibits: a. thermal effects c. chemical effects b. magnetic effects d. all answers correct | d. all answers correct |
| Lightning bolts travel through the air at speeds of up to how many miles per hour? | 60.000 |
| A substance that is a particularly good conductor of electricity is: | Copper |
| The path of an electric current from the generating source back to the original source is a(n): | complete circuit |
| Rubber, silk, wood, and glass are common examples of: | insulators |
| Rapid and interrupted current that flows in one direction and then in the opposite direction is: | alternating current |
| Electricity travels how many miles per second? | 186,000 |
| The unit that measures the pressure or force that pushes the flow of electrons forward through a conductor is a(n): | Volt |
| The current for facial and scalp treatments is measured in: | milliamperes |
| A measurement of how much electricity is being used in 1 second is a(n): | watt |
| The special device that prevents excessive current from passing through a circuit is a(n): | Fuse |
| The electrical appliance connection that supplies current to the circuit is the: | live connection |
| Electronic facial treatments are commonly referred to as: | electrotherapy |
| An applicator that directs electric current from a machine to the client’s skin is a(n): | electrode |
| The negative or positive pole of an electric current is referred to as the: | polarity |
| The positive electrode is called a(n): | anode |
| Infusing water-soluble products into the skin with the use of electric current is known as: | iontophoresis |
| Cataphoresis forces acidic substances into deeper tissues using galvanic current from the: | positive toward the negative pole |
| The process used to treat acne and milia and soften and emulsify deposits in the hair follicles is: | desincrustation |
| Thermal or heat-producing current with a high rate of oscillation or vibration is: | violet ray |
| The type of current that should not be used on clients who are pregnant, have high blood pressure, or have a pacemaker is: | Tesla high-frequency |
| The distance between two successive peaks is called: | wavelength |
| Rays with short wavelengths that are the least penetrating, produce chemical effects, and kill germs are: | ultraviolet rays |
| Rays with long wavelengths that penetrate more deeply and produce more heat than visible light are: | infrared rays |
| Lasers work by a process that turns the light from the laser into heat called: | photothermolysis |
| Substances that speed up chemical reactions | Catalysts |
| Unit that measures the strength of an electric current | Ampere |
| Unit that measures the resistance of an electric current | Ohm |
| Currents used in electrical facial and scalp | Modalities |
| Extremely low level of electricity that mirrors the body’s natural electrical impulses | Microcurrent |
| Color component within the skin such as blood or melanin | Chromophore |
Created by:
mztina216