Ch. 13 - Basics of Electricity Flashcards
The movement of electrons from one atom to another along a conductor is called ______________.
electricity
Electric wires can be covered with a material that does not transmit electricity such as rubber or plastic coating. This material is known as ______________.
an insulator
An apparatus that changes direct current to alternating current is ______________.
an inverter
The term ______________ refers to a rapid and interrupted current, flowing first in one direction and then in the opposite direction.
alternating current
The unit that measures the pressure or force that pushes the electric current forward through a conductor is ______________.
a volt
Which unit measures the resistance of an electric current?
Ohm
The device that prevents excessive current from passing through a circuit is called ______________.
a fuse
A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is ______________.
a circuit breaker
The negative electrode of an electrotherapy device is called ______________.
a cathode
A process that infuses an alkaline project into the tissues from the negative pole toward the positive pole is called ______________.
an anaphoresis
Grounding completes ______________ and carries the current safely away.
an electric circuit
All the electrical appliances you use should ______________.
be UL certified
When using ______________, the active electrode is the electrode used on the area to be treated.
galvanic current
Microcurrent can be used to ______________ and restore elasticity.
increase muscle tone
Only licensed professionals should use ______________.
light therapy
A wavelength is the distance between successive peaks of ______________ waves.
electromagnetic
Invisible light is the light at either end of the ______________ that is invisible to the naked eye.
visible spectrum of light
Ultraviolet C (UVC) light ______________.
is blocked by the ozone layer
Catalysts are substances that speed up ______________.
chemical reactions
All lasers work by a process known as selective ______________.
photothermolysis
Constant and direct current, having a positive and negative pole, which produces chemical changes when it passes through the tissues and fluids of the body is known as ______________ current.
a galvanic
An extremely low level of electricity that mirrors the body’s natural electrical impulses is ______________.
a microcurrent
A medical device that uses multiple colors and wavelengths of focused light to treat conditions such as excessive hair and spider veins is ______________.
an intense pulse light
The thermal or heat-producing current with a high rate of oscillation or vibration that is commonly used for scalp and facial treatments is called ______________.
a Tesla high-frequency current
A device that works by releasing light onto the skin to stimulate specific responses at precise depths of the skin tissue is ______________.
a light-emitting diode
For safety, use no more than ______________ plug(s) in each outlet.
one
When ______________ is heated, it produces positive and negative ions that cancel the electric charges in the hair that cause static electricity.
tourmaline
The application of UV light must be done with the utmost care in a proper manner by a qualified professional because overexposure can lead to skin ______________.
damage and skin cancer
The use of ______________ light reduces acne and bacteria on the skin.
blue
The unit that measures how much electric energy is being used in one second is ______________.
a watt
