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FOUNDATIONS: Ch. 7, Electricity Review

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

The movement of electrons from one atom to another along a conductor is called:

a)

An electric charge

b)

Electricity

c)

Energy flow

d)

Sparks

2.

Electric wires can be covered with a material that does not transmit electricity, such as rubber or plastic coating. This material is known as a/n:

a)

Insulator

b)

Conductor

c)

Circuit

d)

Fuse

3.

An apparatus that changes direct current to alternating current:

a)

Rectifier

b)

Circuit breaker

c)

Inverter

d)

Fuse box

4.

The term __ current refers to a rapid and interrupted current:

a)

Rectified

b)

Alternating

c)

Active

d)

Direct

5.

The unit that measures the pressure or force that pushes the electric current forward through a conductor:

a)

Amp

b)

Watt

c)

Ohm

d)

Volt

6.

Which unit measures the resistance of an electric current?

a)

Ohm

b)

Watt

c)

Amp

d)

Volt

7.

The device that prevents excessive current from passing through a circuit is called a/n:

a)

Fuse

b)

Battery

c)

Kilowatt

d)

Ampere

8.

The switch that automatically interrupts or shuts off an electric current at the first indication of an overload:

a)

Voltage regulator

b)

Ampere interrupter

c)

Circuit breaker

d)

Battery charger

9.

The negative electrode of an electrotherapy device:

a)

Anode

b)

Electron

c)

Carbide

d)

Cathode

10.

Grounding completes a/n __ and carries the current safely away:

a)

Electric charge

b)

Electric current

c)

Electron flow

d)

Microcurrent

11.

All of the electrical appliances you use should:

a)

Be battery-operated

b)

Be UL certified

c)

Have a two-prong plug

d)

Be used near water

12.

When using __ current, the active electrode is the electrode used on the area to be treated:

a)

Alternating

b)

Direct

c)

Electric

d)

Galvanic

13.

Microcurrent can be used to __ and restore elasticity:

a)

Decrease metabolism

b)

Increase muscle tone

c)

Reduce lymph

d)

Prevent acidic reactions

14.

A wavelength is the distance between successive peaks of __ waves:

a)

Electric

b)

Electromagnetic

c)

Galvanic

d)

Infrared

15.

Invisible light is the light at either end of the __ that is invisible to the naked eye:

a)

Electromagnetic spectrum

b)

Spectrum of radiance

c)

Radiation spectrum

d)

Visible spectrum of light

16.

UVA light:

a)

Is often used in tanning beds

b)

Has the shortest wavelength

c)

Is often called burning light

d)

Is blocked by the ozone layer

17.

Catalysts are substances that speed up __ reactions:

a)

Chemical

b)

Acidic

c)

Alkaline

d)

Photoxic

18.

Constant and direct current that has a positive and negative poll and produces chemical changes when it passes through the tissues and fluids of the body is known as:

a)

Galvanic current

b)

Alternating current

c)

Direct current

d)

High-frequency current

19.

__ is an extremely low level of electricity that mirrors the body’s natural electrical impulses:

a)

Minicurrent

b)

Microcurrent

c)

Milliampere

d)

Biocurrent

20.

The thermal or heat producing current with a high rate of isolation or vibration that is commonly used for scalp and facial treatments:

a)

Tesla alternating

b)

Ultraviolet

c)

Burning

d)

Tesla high-frequency

21.

For safety, use no more than __ in each outlet

a)

One plug

b)

Two plugs

c)

Three plugs

d)

Four plugs

22.

The application of UV light must be done with the upmost care in a proper manner by a qualified professional because overexposure can lead to skin:

a)

Allergies and irritation

b)

Damage and cancer

c)

Dryness and scaling

d)

Overporosity and sanguinity

23.

The unit that measures how much electric energy is being used in one second is a/n:

a)

Ohm

b)

Volt

c)

Watt

d)

Ampere

24.

If you see sparks when plugging or unplugging an appliance, __

a)

Fix it yourself immediately

b)

Do not use the appliance or outlet until approved

c)

Try a different outlet

d)

Let it rest then try again later

25.

Electric __ refers to the flow of electricity along a conductor:

a)

Resistance

b)

Insulation

c)

Current

d)

Circuitry

26.

Which of the following is considered a good conductor?

a)

Rubber

b)

Cement

c)

Silk

d)

Tap water

27.

You should disconnect an appliance by:

a)

Pulling on the cord

b)

Stepping on the cord

c)

Pulling on the plug

d)

Twisting the plug

28.

You should not touch __ while using an electrical appliance:

a)

Rubber

b)

Metal

c)

Glass

d)

Plastic

29.

__ is the process that introduces water-soluble products into the skin:

a)

Iontophoresis

b)

Desincrustation

c)

Cannibalism

d)

Anaerobics

30.

Within the visible spectrum of light, ___ has the shortest wavelength and __ has the longest:

a)

Yellow; red

b)

Violet; red

c)

Yellow; green

d)

Violet; indigo

31.

What light is known as cold light or actinic light?

a)

Electromagnetic

b)

Visible

c)

Infrared

d)

Ultraviolet

32.

Direct current is produced by __ means:

a)

Physical

b)

Chemical

c)

Mechanical

d)

Photovoltaic

33.

An appliance rated at 12 A must have a cord that is __ as thick as one rated at 6 A; otherwise, the cord might overheat and start a fire:

a)

Half

b)

Just

c)

Twice

d)

Four times

34.

The electricity in your house is measured in __ per hour

a)

Kilowatts

b)

Volts

c)

Kilovolts

d)

Millamps

35.

Which light rays are blocked by the ozone layer?

a)

Visible light

b)

UVB rays

c)

UVC rays

d)

Infrared light

36.

A/n __ is designed to detect currents of a few milliamperes and trip a breaker at the receptacle or at the breaker panel to remove the shock hazard:

a)

UL

b)

GFI

c)

MRI

d)

UVB

37.

Which of these is not a modality used in beauty and wellness services?

a)

Tesla high-frequency current

b)

Microcurrent

c)

Integrated current

d)

Galvanic current

38.

Anaphoresis:

a)

Softens tissues

b)

Close is the pores

c)

Contracts blood vessels

d)

Produces acidic reactions

39.

Remove lint from clothes dryers before each load to:

a)

Save electricity

b)

Reduce the chance of fire

40.

When should you seek medical care after an electrical shock?

a)

If you were touching metal

b)

If your appliance’s cords are frayed or tangled

c)

If a client witnessed the shock

d)

If you are pregnant