ch 8 - basics of electricity

Question 1

what does the acronym LED stand for

a. light-emitting diode
b. laser-emitting device
c. light electrical device
d. laser electrode dial

Answer 1

light-emitting diode

Question 2

what measure is one-thousandth of an ampere

a. multiampere
b. milliampere
c. microampere
d. macroampere

Answer 2

milliampere

Question 3

what term refers to currents used as electrical facial and scalp treatments

a. modems
b. moderations
c. modalities
d. modes

Answer 3

modalities

Question 4

what apparatus changes alternating current to direct current

a. charger
b. actuator
c. modifier
d. rectifier

Answer 4

rectifier

Question 5

what describes Tesla high-frequency current

a. high rate of oscillation and a low rate of vibration
b. high rate of oscillation and vibration
c. low rate of oscillation and vibration
d. low rate of oscillation and a high rate of vibration

Answer 5

high rate of oscillation and vibration

Question 6

what is a description of white light

a. complete absence of light of any color
b. combination of all the visible rays of the spectrum
c. combination of all the invisible rays of the spectrum
d. combination of any two or more colors of visible light

Answer 6

combination of all the visible rays of the spectrum

Question 7

what is yellow LED light used for

a. aiding in facial and scalp treatments
b. detoxifying the skin
c. reducing inflammation and swelling
d. stimulating circulation

Answer 7

reducing inflammation and swelling

Question 8

what is red LED light used for

a. stimulating circulation
b. reducing inflammation and swelling
c. detoxifying the skin
d. aiding in facial and scalp treatments

Answer 8

stimulating circulation

Question 9

what is green LED light used for

a. aiding in facial and scalp treatments
b. reducing inflammation and swelling
c. stimulating circulation
d. detoxifying the skin

Answer 9

detoxifying the skin

Question 10

what is the primary source of light used in facial and scalp treatments

a. visible light
b. invisible light
c. natural light
d. artificial light

Answer 10

visible light

Question 11

what is a device in which UVA radiation is used

a. autoclave
b. tanning bed
c. hairdryer
d. towel warmer

Answer 11

tanning bed

Question 12

what is the term commonly used in reference to UVB radiation

a. tanning light
b. rainbow light
c. ozone light
d. burning light

Answer 12

burning light

Question 13

what is true of UVC radiation

a. it is the least dangerous type of UV radiation
b. it is the most dangerous type of UV radiation
c. it is used in tanning beds
d. it is often called the burning light

Answer 13

it is the most dangerous type of UV radiation

Question 14

what term refers to a color component within the skin such as blood or melanin

a. chromoform
b. chromophore
c. chromakey
d. chromazyme

Answer 14

chromophore

Question 15

how does red LED light affect cellular processes

a. decreases cellular processes
b. increases cellular processes
c. stops cellular processes completely
d. interrupts cellular processes temporarily

Answer 15

increases cellular processes

Question 16

what is NOT a condition that intense pulsed light is used to treat

a. spider veins
b. hyperpigmentation
c. albinism
d. excessive hair

Answer 16

albinism

Question 17

what is wavelength

a. primary source of light used in facial and scalp treatments
b. distance between two successive peaks of electromagnetic waves
c. flow of electricity along a conductor
d. color component of the skin sound at different depths

Answer 17

distance between two successive peaks of electromagnetic waves

Question 18

what does watt measure

a. how much electric energy is used in one second
b. how much electric energy is used in 10 seconds
c. how much electric energy is used in one minute
d. how much electric energy is used in 10 minutes

Answer 18

how much electric energy is used in one second

Question 19

what does volt measure

a. force pushing electrons forward through a conductor
b. force moving protons backward through a conductor
c. resistance keeping electrons from moving through a conductor
d. resistance keeping protons from moving through a conductor

Answer 19

force pushing electrons forward through a conductor

Question 20

what do ohms measure

a. force of electric current
b. direction of electric current
c. resistance of electric current
d. absence of electric current

Answer 20

resistance of electric current

Question 21

what is the term for a rapid and interrupted current, flowing first in one direction and then in the opposite direction

a. direct current
b. alternating current
c. advance current
d. directional current

Answer 21

alternating current

Question 22

what is the term for a constant, even-flowing current that travels in one direction only

a. steady current
b. direct current
c. even current
d. alternating current

Answer 22

direct current

Question 23

what unit measures the amount of an electric current

a. ohm
b. watt
c. volt
d. amp

Answer 23

amp

Question 24

what type of LED light is used to treat acne

a. blue
b. green
c. yellow
d. red

Answer 24

blue

Question 25

what is the term for a negative electrode a. diode b. anode c. cathode d. nullode

Answer 25

cathode

Question 26

what is the movement of particles around an atom that creates pure energy a. fission b. fusion c. electricity d. magnetism

Answer 26

electricity

Question 27

what should you do on a regular basis a. inspect electrical equipment b. submerge electrical equipment in water for cleaning purposes c. discard any electrical equipment that looks old-fashioned d. dismantle electrical equipment

Answer 27

inspect electrical equipment

Question 28

what is ionization a. forcing acidic substances into deeper tissue using galvanic current b. introducing water-soluble products into the skin with electric current c. using galvanic current to create an alkaline chemical reaction d. the use of electrical devices for therapeutic benefits

Answer 28

introducing water-soluble products into the skin with electric current

Question 29

what is cataphoresis a. forcing alkaline substances into deeper tissues using galvanic current b. withdrawing alkaline substances form the skin with microcurrent c. withdrawing acidic substances from the skin with micro current d. forcing acidic substances into deeper tissues using galvanic current

Answer 29

forcing acidic substances into deeper tissues using galvanic current

Question 30

what is anaphoresis a. forcing liquids into tissues from the negative toward the positive pole b. forcing liquids into tissues from the positive toward the negative pole c. pulling liquids from tissues, from the negative toward the positive pole d. pulling liquids from tissues, from the positive toward the negative pole

Answer 30

forcing liquids into tissues from the negative toward the positive pole

Question 31

what is the other method for applying high-frequency current, besides indirect application a. angular surface application b. angular superficial application c. direct surface application d. indirect superficial application

Answer 31

direct surface application

Question 32

what percentage of natural sunlight does invisible infrared light comprise a. 10 b. 30 c. 60 d. 100

Answer 32

60

Question 33

what is a complete circuit a. path of current from one conductor to the next b. path of current from the source through conductors and back c. path of current from the source to the first conductor d. path of current from the last conductor back to the source

Answer 33

path of current from the source through conductors and back

Question 34

what is the term for any substance that easily transmits electricity a. transmitter b. receiver c. resister d. conductor

Answer 34

conductor

Question 35

what is the device that prevents excessive current from passing through a circuit a. switch b. outlet c. fuse d. ground

Answer 35

fuse

Question 36

what completes a circuit and carries the current safely away a. circuit breaker b. mainline c. fuse d. ground

Answer 36

ground

Question 37

what are invisible rays with long wavelengths a. phantom light rays b. infrared light rays c. translucent light rays d. ethereal light rays

Answer 37

infrared light rays

Question 38

what is the term for a substance that does not easily transmit electricity a. conductor b. insulator c. fuse d. circuit

Answer 38

insulator

Question 39

what is the measurement for 1,000 watts a. megawatt b. macro watt c. kilowatt d. kerawatt

Answer 39

kilowatt

Question 40

what is NOT a condition treated with light therapy a. obesity b. capillaries c. wrinkles d. acne

Answer 40

obesity