Download Electricity Workbook

Name: ______________________________
___________________________________
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 ___________.
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Name: ______________________________
___________________________________
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:
2
Name: ______________________________
4.
___________________________________
Tip:
Reason:
5.
Tip:
Reason:
6.
Tip:
Reason:
3
Name: ______________________________
7.
___________________________________
Tip:
Reason:
8.
Tip:
Reason:
9.
Tip:
Reason:
10.
Tip:
Reason:
4
Name: ______________________________
11.
___________________________________
Tip:
Reason:
12.
Tip:
Reason:
13.
Tip:
Reason:
14.
Tip:
Reason:
5
Name: ______________________________
15.
___________________________________
Tip:
Reason:
16.
Tip:
Reason:
17.
Tip:
Reason:
18.
Tip:
Reason:
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Name: ______________________________
___________________________________
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:
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Name: ______________________________
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:
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Name: ______________________________
___________________________________
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).
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Name: ______________________________
___________________________________
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.
Meter
Reading
Item
6. Use the Resistance setting on the meter to measure:
Meter
Reading
Item
Light bulb
A electronics resistor
A stove element
An LED
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Does it conduct?
Name: ______________________________
___________________________________
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.
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Name: ______________________________
___________________________________
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? _______________
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Name: ______________________________
___________________________________
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? ____________
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Name: ______________________________
___________________________________
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)
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