Electricity

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Electricity
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Lessons

• 1 What Gives Matter A Charge?
• 2 How Does Electrical Energy Get Around?
• 3 How Do You Make Electricity Do What You Want?
• 4 Whats the Best Pathway for Electrons?

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Lesson 1
What Gives Matter a Charge?
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In the activity Opposites Attract, Likes Repel
on pages 12-13, you made two observations

• Objects with opposite charges (one negative, one
  positive) will attract each other.
• Objects with like charges (both negative or both
  positive) will repel each other.

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You also learned that the build-up of electrical
charges in one place is called STATIC ELECTRICITY.
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Lets see what else you remember!
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A particle with a positive charge is called a/an
_______________.
proton
neutron
electron
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A particle with a negative charge is called a/an
_______________.
proton
neutron
electron
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_________ means to push away.
_________ means to pull together.
charge
charge
attract
attract
repel
repel
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If an electrically-neutral object GAINS
electrons, what charge does it now have?
positive
neutral
negative
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If an electrically-neutral object LOSES
electrons, what charge does it now have?
positive
neutral
negative
12
Static electricity is placed on an object by
_____________ such as combing hair or rubbing a
balloon with a wool cloth.
currents
contact
neutrons
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How did you do?
I did great! I understand static electricity!
Im getting there, but Id like some more
practice.
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Marvelous!
Go on to Lesson 2
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Lesson 2
What is the difference between open and closed
circuits?
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Click on a term to reveal its definition.
circuit
open circuit
closed circuit
Proceed to quiz
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Circuit A closed-loop path of conduction through
which an electric current flows
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Open circuit An incomplete path that will not
permit an electric current to flow
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Closed circuit A complete path for electric
current
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Quiz What type of circuit is shown in each of
the following examples?
Open circuit
Closed circuit
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Open circuit
Closed circuit
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Closed circuit
Open circuit
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Open circuit
Closed circuit
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Open circuit
Closed circuit
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Now that youre done, do you feel like you
understand the difference between open and closed
circuits?
Yes, I understand.
No, Id like more practice.
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Way to go!
Go on to Lesson 3
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Lesson 3
How Do You Make Electricity Do What You Want?
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You have just completed the Will it Conduct?
activity on pages 34-35. Lets briefly review
what you learned!
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Click on a term to reveal its definition and
examples.
Insulator
Conductor
Continue
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Insulator a substance through which
electricity cannot flow readily
Examples wood plastic rubber sulfur
glass
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Conductor a material through which electrons
can move easily
Examples brass aluminum copper graphite
water
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Which of these items are conductors?
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Which of these items are insulators?
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Are you confident in your understanding of
conductors and insulators?
Yes, Im confident.
No, Id like more practice.
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Great job!
Go on to Lesson 4
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Lesson 4
Whats the Best Pathway for Electrons?
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You have learned that there are two main types of
circuits
Parallel
Series
and
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Parallel circuits are circuits with more than one
pathway through which electrons can flow.
Series circuits are circuits with only one
pathway through which electrons can flow.
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What type of circuits are shown in the following
examples?
parallel
series
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Flashlight
parallel
series
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parallel
series
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Home lighting
parallel
series
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Holiday lights
parallel
series
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Car headlights
parallel
series
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Security systems
parallel
series
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How did you do? Were you certain about your
answers?
Yes, I knew them.
No, Id like more practice.
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Fantastic!
Keep up the good work!
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If youd like to read more about electricity,
check these out!

• Ben and Me An Astonishing Life of Benjamin
  Franklin by his good mouse Amos by Robert Lawson.
  Boston Little, Brown and Company, 1939.
• Blinkers and Buzzers Building and
  Experimenting with Electricity and Magnetism by
  Bernie Zubrowski. New York Morrow Junior
  Books, 1991.
• Simple Electrical Devices by Martin J. Gutnik.
  New York Franklin Watts, 1986.
• Superconductivity From Discovery to
  Breakthrough by Charlene W. Billings. New York
  Dutton, 1991.
• Wires and Watts Understanding and Using
  Electricity by Irwin Math. New York Macmillan,
  1981.