The different types of currents used in facial and scalp treatments are called __________.

• Units

• AC

• Modalities

• DC

What does the volt measure?

• Electrical Pressure

• Strength or rate of an electric current

• Electrical Resistance

• How much electric energy is being used in 1 second

Ultraviolet rays produce _________ effects.

• Heating

• Germicidal

• Cooling

• Moisturizing

What effect can microcurrents produce?

• Decrease muscle tone

• Produce a softer appearance to aging skin

• Decrease metabolism

• Restore elasticity

A metal, such as copper wire, serves as a(n) _________.

• Nonconductor

• Conductor

• Insulator

• Converter

The client's ________ should always be protected during light-therapy treatments.

• Ears

• Hair

• Eyes

• Skin

Electric clippers and hair dryers are examples of barbering tools that use __________ current.

• Alternating

• Converted

• Direct

• Rectified

Which of the following should you not touch while using an electrical appliance?

• Rubber

• Plastic

• Glass

• Metal

Visible light makes up to _______ percent of natural light.

• 25

• 35

• 65

• 85

A(n) ________ is the flow of electricity along a conductor.

• Rheostat

• Insulator

• Electric Current

• Electric Circuit