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Foundations chapter 7
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which type of ligh prompts the skin to produce beneficial vitamin D?
 
ultraviolet light
 
infrared light
 
fluorescent light
 
galvanic light
which of the following is TRUE of ultraviolet light?
 
it is invisible
 
it has a long wavelength
 
it slows chemical reactions
 
it is hot light
which percentage of natural sunlight is visible, making up the visible spectrum of light?
 
35%
 
10%
 
70%
 
95%
how does energy move through space?
 
in waves
 
electromagnetically
 
by physical force
 
mechanically
which of the following is TRUE of fluorescent light?
 
it is cooler than natural sunlight
 
it is warmer than natural sunlight
 
it is a yellow gold light
 
it is a type of incandescent light
which of the following types of energy is most likely associated with nulear power plants?
 
gamma rays
 
radio waves
 
x-rays
 
microwaves
a condition that prohibits certain treatments is called a _____.
contraindication
which of the following is Tesla high-frequency current used for?
 
improving germicidal action
 
slowing blood circulation
 
decreasing elimination and absorption
 
decreasing skin metabolism
for which of the following would microcurrent be MOST useful?
 
reducing redness and inflamation
 
decreasing muscle tone
 
slowing healing
 
removing the natural protective barrier of the skin
which of the following reactions can be expected when using anaphoresis?
 
stimulation of nerves
 
closing of pores
 
decrease in blood supply
 
hardening of tissues
which of the following is TRUE of galvanic current?
 
it has a positive and negative pole
 
it is ab indirect current
 
it is a broken inconsistent current
 
it does not produce a chemical change
Which of the following is TRUE of the poles of an electric current?
 
they are either positive or negative
 
they are either left or right
 
they are either direct or alternating
 
they are either conductive or nonconductive
which of the following should you do if you receive a light shock while using an electrical appliance?
 
unplug the appliance from the wall
 
continue using with caution
 
attempt to repair it immediately
 
give the appliance a short break before using again
which of the following is an example of an electrical safety device that you may encounter when working in a salon, spa or barbershop?
 
circuit breaker
 
alternating current
 
conductor
 
ampere
What is TRUE of wire that is not large enough to carry the electrical current passing through it?
 
it will overheat
 
it will not power the device
 
it will electrocute the user
 
it will save energy
which of the following measures the resistance of electrical current?
 
an ohm
 
an ampere
 
a volt
 
a watt
Which of the following is a good example of an insulator?
 
wood
 
steel
 
tap water
 
copper
Which of the following is an example of a conductor?
 
tap water
 
rubber
 
glass
 
cement
Why is copper used in electrical wiring and electrical motors?
it is a good conductor
Which of the following types of effects does electricity exhibit?
 
magnetic, thermal, chemical
 
magnetic and chemical
 
magnetic and thermal
 
magnetic
Electricity use impacts ______ of the services that beauty professionals offer their clients.
All
Which of the following is TRUE of electricity and the beauty and wellness industry?
 
advanced machines require knowledge of electrical theory
 
most beauty pros wont interact with electricity directly
 
most equipment beauty pros deal with are very dangerous
 
electricity used in the industry is limited to clippers
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