chapter 13

Question 1

alternating current

Answer 1

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

Question 2

ampere

Answer 2

unit that measures the number of electrons that flow through a complete circuit

Question 3

catalyst

Answer 3

speeds up chemical reactions

Question 4

cataphoresis

Answer 4

process of fusing an acidic product into deeper tissue

Question 5

cathode

Answer 5

negative electrode of an electrotherapy device

Question 6

chromophore

Answer 6

a color component within the skin such as blood or melanin

Question 7

circuit breaker

Answer 7

resettable electric safety device that automatically shuts off an electric current at the first indication of an overload

Question 8

complete electrical circuit

Answer 8

closed loop that creates electricity

Question 9

conductor

Answer 9

any substance that easily allows the flow of electricity

Question 10

direct current

Answer 10

constant even flowing current that only travels in one direction

Question 11

electric current

Answer 11

flow of electricity in a complete circuit

Question 12

electrical safety devices

Answer 12

designed to detect and protect you from an overload/short circuit

Question 13

electrical ground

Answer 13

completes an electrical circuit and carries the current safely away

Question 14

grounding

Answer 14

completes an electric circuit and carries the current away safely

Question 15

electricity

Answer 15

the movement of electrons from one atom to another along a conductor

Question 16

electromagnetic radiation

Answer 16

visible light

Question 17

intense light pulse

Answer 17

a medical device that uses multiple colors and wavelengths to treat skin conditions

Question 18

frequency

Answer 18

the number of waves in a current

Question 19

iontophoresis

Answer 19

process of infusing water soluble products into the skin with the use of electric current

Question 20

laser

Answer 20

a medical device that uses electromagnetic radiation for hair removal or skin treatments

Question 21

fuse

Answer 21

single safety device designed to provide protection from an electrical overload

Question 22

ground fault circuit interrupter

Answer 22

resettable safety device that is designed to provide protection

Question 23

heating element

Answer 23

converts electricity into heat into heat by providing resistance to an electric current

Question 24

infrared radiation

Answer 24

just below the visible spectrum of light

Question 25

insulator

Answer 25

substance that does not easily allow the flow of electricity

Question 26

inverter

Answer 26

changes direct current to alternating current

Question 27

kilowatt

Answer 27

1000 watts

Question 28

milliampere

Answer 28

one thousandth of an ampere

Question 29

ohm

Answer 29

unit that measures the resistance of electrical current

Question 30

ultraviolet radiation

Answer 30

electromagnetic radiation with a wavelength shorter than visible light, but longer than x-rays

Question 31

visible

Answer 31

light that can be seen

Question 32

volt

Answer 32

unit that measures the pressure of force that pushes the flow of electrons forward through a complete circuit

Question 33

watt

Answer 33

measurement of how much electricity is being used in 1 second

Question 34

wavelength

Answer 34

the distance between 2 successive peaks