Which of the following is TRUE of electricity and the beauty and wellness industry?

• Most beauty professionals will not interact directly with electricity.

• Most of the equipment that beauty professionals deal with is very dangerous.

• Advanced electrical machines require an understanding of electrical theory.

• Electricity use in the beauty industry is limited to clippers and hair dryers.

Electricity use impacts ______ of the services that beauty professionals offer their clients.

• all

• most

• about half

• a small handful

How does energy move through space?

• electromagnetically

• in waves

• mechanically

• by physical force

Which of the following is TRUE of ultraviolet light?

• It slows chemical reactions.

• It is invisible.

• It has a long wavelength.

• It is hot light.

Which of the following is TRUE of electricity?

• It occupies space and has mass.

• It occupies space, but has no mass.

• It does not occupy space or have mass.

• It has mass, but occupies no space.

Which of the following types of energy is most likely associated with nuclear power plants?

• gamma rays

• X-rays

• radio waves

• microwaves

Why is grounding important?

• Because it turns direct current into alternating current.

• Because it protects against electrical shock.

• Because it turns conductors into nonconductors.

• Because it prevents downed wires in storms.

Which of the following BEST differentiates between direct current and alternating current?

• Direct current is the true form of electrical current, whereas alternating current is not.

• Direct current flows back and forth, whereas alternating current flows in one direction.

• Direct current is not truly an electrical current, whereas alternating current is.

• Direct current flows in one direction, whereas alternating current flows back and forth.

Why is copper used in electrical wiring and electrical motors?

• Because it provides safeguards against electrocution.

• Because it is a good conductor.

• Because it is inexpensive.

• Because it is a good insulator.

Which of the following is TRUE of infrared light?

• It produces heat.

• It is galvanic.

• It is visible to the eye.

• It is a bluish light.