Transcript pg. 565 What is a circuit?

Electricity and Magnetism
Study Guide
Ms. DeSimone
Fourth Grade, Room 221
Test Dates:
4D: Wednesday, March 12th, D3
4R: Thursday, March 13th, D4
Let’s start with…
Electricity
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True or False:
It is not possible to
see, smell, or weigh an
electrical charge.
TRUE!
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Fill in the blank:
Electrical charges can be
______ or ____________.
A. north or south
B. hot or cold
C. attract or repel
D. positive or negative
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What is static electricity?
Is it…
a type of circuit?
the difference between a north and south
pole?
a buildup of electric charges on an object?
the way that power flows through wires?
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What is a circuit?
The path along which electric current can
flow
OR…
The flow of electric charges through a
circuit
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What is a discharge?
The sudden movement of electric
charges from one object to
another.
You have experienced a discharge
if you have ever touched
something and gotten a SHOCK!
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What are the two main
types of circuits?
Series Circuit
Parallel Circuit
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Explain how series circuits and
parallel circuits are different.
In a series circuit, electric current
flows in the same direction along a
single path.
In a parallel circuit, electric current
flows through more than one path.
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Now, let’s move on to…
Magnetism
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What are the two types
of magnetic forces?
___ ___ ___ ___ ___ ___ ___
and
___ ___ ___ ___ ___
ANSWERS:
attract
and
repel
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When two magnets pull
or push away, we say
that they ________
one another.
R E P E L
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When two magnets pull
together, we say that
they _______ one
another.
A T T R A C T
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Which of the materials listed
below do magnets attract?
copper
tin
cobalt
plastic
nickel
steel
iron
wood
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What are the ends of
magnets called?
POLES
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Name each type of
magnet shown below:
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What is the area of magnetic
force around a magnet called?
A. magnetic strength
B. magnetic field
C. magnetic ends
D. magnetic tips
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What is an electromagnet?
An electromagnet is a magnet
formed when electric current
flows through wire wrapped in
coils around an iron bar.
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Electromagnets can be found in
your house. Name some places
where they can be found.
headphones
telephones
doorbells
motors
There are many! Can you think of any others?
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BONUS QUESTION
There will be a 2-point BONUS question on
your test. It will be about one of the
Science labs we have done.
Our labs included:
 Balloon Static
 Stick or Won’t Stick
 Making Parallel and Series Circuits
 Magnets’ Ends
 Lines of Force with Iron Filings
~ THE END ~
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STUDY!