Conventional hood hair dryers can be used to ______________ chemical processing time.

​Infrared lamps are NOT used:

​Which type of UV light is most associated with sunburns?

UV light causes chemical reactions to happen more quickly than visible light, and:

​Microcurrent is NOT used to:

​The third prong found on the plugs of some appliances is called the:

​Which unit measures the pressure or force that pushes electric current forward through a conductor?

Intense pulse light is NOT used to treat:

In LED therapy green light reduces hyperpigmentation.

A _____ is a color component within the skin such as blood or melanin.

The application of light rays to the skin for the treatment of wrinkles or pigmentation is called light therapy or:

A(n) _____ is a substance that speeds up a chemical reaction.

Ultraviolet (UV) rays applied to the skin during a treatment prompt the skin to produce vitamin D.

Within the visible spectrum of light, the longest wavelength is:

A _____ is the distance between successive peaks of an electromagnetic wave.

What name is given to all of the forms of energy that exist?

Which type of electrotherapy involves a thermal current with a high rate of oscillation or vibration, and is commonly used for scalp and facial treatments?

Which process is used to soften and emulsify oil deposits in hair follicles and treat acne conditions?

Which process infuses an alkaline product into the tissues from the negative pole toward the positive pole?

In facial treatments, the process of infusing water-soluble products into the skin with electric current is called:

In galvanic current, the electrode used on the area to be treated is the:

The positive electrode on an electrotherapy device is called a(n):

Which term refers to the negative or positive pole of an electric current?

An applicator used to direct electric current from an electrotherapy device to a client’s skin is a(n):

The different types of electrical currents used in facial and scalp treatments are called:

All the electrical appliances you use should be __ certified.

A switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload is a(n):

A(n) _____ measures the amount of electric energy used in 1 second.

The unit that measures the strength of the electric current is a(n):

A(n) _____ is an apparatus that changes alternating current (AC) to direct current (DC).

Rapid, interrupted electric current that flows in one direction then in the opposite direction is called _____ current.

A(n) _____ is a device that changes direct current to alternating current.

Constant, even-flowing electrical current that travels in one direction only is called:

A(n) _____ is the path of negative and positive electric currents moving from the generating source through the conductors and back to the generating source.

Which of the following is NOT an insulator?

A substance that does not easily transmit electricity is called a(n):

The flow of electricity along a conductor is called:

Electricity is the movement of _____ from one atom to another along a conductor.

The unit that measures the resistance of an electric current is a(n):