Name: ______________________________ ___________________________________

1

Activity 1: Electricity Worksheet

A. Where are electrons located in an atom? ________________

B. What charge does an electron have? _________________

C. What two things are located in the center of an atom?

___________________ _____________________

D. What keeps the electrons orbiting around nucleus? _________________

E. What is the name of the force that causes electrons to move away from the nucleus? ____________________

F. When a switch in a circuit is open (turned off), what are the Free Electrons doing? ____________________________________________________

G. Once the switch is closed (turned on), the positive attraction causes the __________ to flow.

H. What is electricity? ___________________________________________

I. Materials that allow the flow of electrons from negative to positive are called _____?

J. List 3 good conductors. ____________ _____________ ___________

K. What is the most common metal used in wires? ____________________

L. Why not use gold as wire since it’s free electron is farther away from the nucleus than copper? (Think!) ________________________________

M. Safety Warning: What three problems can happen when you when you connect a short wire between the positive and negative ends of a battery?

___________________ ___________________ _________________

N. Why isn’t it a safety issue when to connect a short wire with a light in the circuit? (2 reasons) __________________________________________

___________________________________________________________

O. The plastic on a wire is called an ___________.

Name: ______________________________ ___________________________________

2

Activity 2: Electrical Safety Worksheet

Write in the Electrical Safety tip and the reason represented by each picture.

1.

Tip:

Reason:

2.

Tip:

Reason:

3.

Tip:

Reason:

Name: ______________________________ ___________________________________

3

4.

Tip:

Reason:

5.

Tip:

Reason:

6.

Tip:

Reason:

Name: ______________________________ ___________________________________

4

7.

Tip:

Reason:

8.

Tip:

Reason:

9.

Tip:

Reason:

10.

Tip:

Reason:

Name: ______________________________ ___________________________________

5

11.

Tip:

Reason:

12.

Tip:

Reason:

13.

Tip:

Reason:

14.

Tip:

Reason:

Name: ______________________________ ___________________________________

6

15.

Tip:

Reason:

16.

Tip:

Reason:

17.

Tip:

Reason:

18.

Tip:

Reason:

Name: ______________________________ ___________________________________

7

Activity 3: Types of Electrical Outlets

The home depot provides information about the different types of electrical outlets available. Aren’t they all the same? No, the electrical code requires certain outlets for different functions. It’s all about safety!! Link

1.

Name:

Function:

2.

Name: Tamper Resistant

Function:

3.

Name:

Function:

4.

Name:

Function:

Name: ______________________________ ___________________________________

8

5.

Name:

Function:

6.

Name:

Function: NONE! Why?

7.

Name: Split Circuit (just about any outlet can be a Split Circuit – just pry off the metal tabs)

Function:

Name: ______________________________ ___________________________________

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Activity 4: Conductivity Lab Worksheet

1. Where do you plug the black probe into the multi-meter?

2. Set the multi-meter on DC current and record the voltage in the batteries provided by the teacher:

a. AA batteries: _____________

b. “C” battery: _____________

c. “Coin” cell: _____________

d. Rechargeable: _____________

e. Transformer 1: _____________

f. Transformer 2: _____________

3. Change your meter to AC, AND SHOW IT TO YOUR TEACHER, before

you test a couple of wall outlets.

a. Outlet 1: _____________

b. Outlet 2: _____________

4. Using the textbook (p. ), sketch a diagram showing where you have to put the probes to measure current (amps).

Name: ______________________________ ___________________________________

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5. Change your meter to measure Resistance. Test 10 items in the classroom and determine if they conduct electricity. Fill in the chart.

Note: the meter only sends out a weak electrical current so anything that is covered in paint, might not register. Scratch the paint away and try again.

Item Meter Reading

Does it conduct?

6. Use the Resistance setting on the meter to measure:

Item Meter Reading

Light bulb

A electronics resistor

A stove element

An LED

Name: ______________________________ ___________________________________

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7. Complete the chart:

Symbol Name Unit Explanation

A

8. Using the Red Textbook (pages: ): a. Explain the terms conductor and insulator

b. List 5 materials that make good conductors.

c. List 5 materials that make good insulators.

Name: ______________________________ ___________________________________

12

Activity 5: Wire and Cable

1. What does all the writing on the wire mean? Use the “Reading Wire

Information” page and indicate the words on the wire and explain what they mean for each category:

Info On Wire: What it means:

a. Type: ____________ ___________________________

b. Materials: ____________ ___________________________

c. Voltage Rating: ____________ ___________________________

d. Gauge: ____________ ___________________________

e. Number of Wires ____________ ___________________________

f. Certified: ____________ ___________________________

2. These questions are from the “Circuit Wiring” information page.

a. What is a circuit? _______________________________________

______________________________________________________

b. What are the three components of every circuit in residential wiring?

________________ _________________ _________________

c. What is the function of a circuit breaker? _____________________

______________________________________________________

d. What causes a circuit breaker to trip/reset? ___________________

e. Which circuit can run the most power hungry devices, 15 amp, or 20

amp? _______________

Name: ______________________________ ___________________________________

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f. Name an example of something might need a 20 amp circuit?

_________________

g. What would you do to find out if a circuit was 15 amps or 20 amps?

______________________________________________________

3. The “Canadian Electrical Code Book” information page specifies the requirements for each situation:

a. How many outlets can you have on a circuit around a kitchen

counter? _________

b. What electrical requirements are there when you build an Island (a

counter in the middle of the kitchen floor)? __________________

____________________________________________________

c. What are the exact specifications for putting GFI outlets in a

bathroom? ___________________________________________

d. In a new home, you must have smoke detectors. What specifically is

the requirement? _________________________________________

e. Name 3 devices that require their own circuit because they draw a lot

of electrical current. ____________ _____________ ___________

f. What color wire would you use for bedroom outlets? ____________

Name: ______________________________ ___________________________________

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4. Use the “Joining Wire” information page to answer these questions:

a. What is the purpose of “junction boxes”? _____________________

______________________________________________________

b. What can you put over a joint to provide some insulation from shock?

___________________________

c. What is the standard for removing sheathing and insulation to create

a joint? ________________________________________________

Activity 7: Use a pencil to represent the location and connections of the white wire. Do the same with a pen to show the black wire. (We’ll leave the ground wire out of the diagram)