ch. 7 electricity and elctrical safety

Question 1

The path that negative and positive electric currents take from the generating source through the conductors and back to the generating source.

Answer 1

Complete electric circuit

Question 2

Prevents excessive current from passing through a circuit

Answer 2

fuse

Question 3

an electric current flowing in one direction only.

Answer 3

direct current

Question 4

1/1000 of an ampere

Answer 4

Milliampere

Question 5

a unit that measures the resistance of a electric current

Answer 5

ohm

Question 6

Unit that measures how much electric energy is being used in one second

Answer 6

watt

Question 7

1000 watts abbreviated as (kw)

Answer 7

kilowatt

Question 8

switch that automatically interrupts or shuts off an electric circuit at the first indication of overload

Answer 8

circuit breaker

Question 9

Completes an electric circuit and carries the current safely away.

Answer 9

Grounding

Question 10

or (UL) certifies the safety of electrical appliances

Answer 10

underwrites labratory

Question 11

the use of electrical currents to treat the skin

Answer 11

Electrotherapy

Question 12

movement of electrons from one atom to another along a conductor

Answer 12

electricity

Question 13

Any material that conducts electricity

Answer 13

conductor

Question 14

a material that does not conduct electricity well

Answer 14

insulator

Question 15

an apparatus that changes direct current to alternating current

Answer 15

inverter

Question 16

rapid and interrupted current, flowing first in one direction and then in the opposite direction

Answer 16

alternating current

Question 17

Apparatus that changes alternating current to direct current

Answer 17

rectifier

Question 18

a unit that measures the pressure of force that pushes electric current forward through a conductor

Answer 18

volt

Question 18

Also known as Amp, is the unit for measuring the strength of an electric current

Answer 18

ampere

Question 19

Also known as probe; applicator for directing electric current from an electrotherapy device to the client’s skin.

Answer 19

electrode

Question 20

the poles of an electric current either positive or negative

Answer 20

polarity

Question 21

positive electrode typically red and marked with a P or plus sign

Answer 21

Anode

Question 22

negative electrode usually black marked with a N or minus sign

Answer 22

cathode

Question 23

Constant and direct current, having a positive and negative pole, that produces chemical changes when it passes through the tissues and fluids of the body.

Answer 23

galvanic current

Question 24

the electrode used on the area to be treated

Answer 24

active electrode

Question 25

the opposite pole from the active electrode

Answer 25

inactive electrode

Question 26

Process of infusing water-soluble products into the skin with the use of electric current, such as the use of the positive and negative poles of a galvanic machine.

Answer 26

Iontophoresis

Question 27

process of forcing acidic substances into deeper tissues using galvanic current from the positive toward the negative pole

Answer 27

Cataphoresis

Question 28

An extremely low level of electricity that mirrors the body's natural electrical impulses.

Answer 28

microcurrent

Question 29

Also known as violet ray; thermal or heat-producing current with a high rate of oscillation or vibration that is commonly used for scalp and facial treatments.

Answer 29

Tesla high-frequency current

Question 30

Condition that requires avoiding certain treatments, procedures, or products to prevent undesirable side effects.

Answer 30

Contraindications

Question 31

Also known as electromagnetic spectrum of radiation; name given to all of the forms of energy (or radiation) that exist.

Answer 31

electromagnetic spectrum

Question 32

Distance between successive peaks of electromagnetic waves.

Answer 32

Wavelength

Question 33

Measurement of the distance between two wavelengths.

Answer 33

Waveform

Question 34

the part of the electromagnetic spectrum that consists of waves detectable by the human eye

Answer 34

visible light

Question 34

Light at either end of the visible spectrum of light that is invisible to the naked eye.

Answer 34

invisible light

Question 35

abbreviated as UV light and also known as cold light or actinic light; invisible light that has a short wavelength (giving it higher energy), is less penetrating than visible light, causes chemical reactions to happen more quickly than visible light, produces less heat than visible light, and kills germs

Answer 35

ultraviolet light

Question 36

has longer wavelengths, penetrates more deeply has less energy and produces more heat than visible light. wavelength is too long to be visible to human eye

Answer 36

infared light

Question 37

Also known as phototherapy; the application of light rays to the skin for the treatment of wrinkles, capillaries, pigmentation, or hair removal.

Answer 37

light therapy

Question 37

DC and AC

Answer 37

what are the two types of electrical currents