Electricity and Electricity and Magnetism Study Magnetism Study

GuideGuideMs. DeSimoneMs. DeSimone

Fourth Grade, Room 221Fourth Grade, Room 221

Test Dates:

4D4D: Wednesday, March 12th, D3

4R4R: Thursday, March 13th, D4

Let’s start with…Let’s start with…

ElectricityElectricity

pg. 562

True or FalseTrue or False:

It is not possible to see, smell, or weigh an electrical charge.

TRUE!TRUE! pg. 564

Fill in the blank:Fill in the blank:

Electrical charges can be ______ or ____________.

A.A. north or south

B.B. hot or cold

C.C. attract or repel

D.D. positive or negativepg. 564

What is What is static static electricityelectricity??

Is it…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?

pg. 565

What is a What is a circuitcircuit??

The path along which electric current can flow

OR…

The flow of electric charges through a circuit

pg. 567

What is a What is a dischargedischarge??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! pg. 566

What are the two What are the two main types of main types of

circuits?circuits?

Series Circuit Series Circuit

Parallel CircuitParallel Circuitpg. 568

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. pg. 568

Now, let’s move on Now, let’s move on to…to…

MagnetismMagnetism

pg. 574

What are the two What are the two types of magnetic types of magnetic

forces?forces?___ ___ ___ ___ ___ ___ ___

and___ ___ ___ ___ ___

ANSWERSANSWERS: : attractattract

andandrepel repel pg. 576

When two magnets When two magnets pull or push away, pull or push away, we say that they we say that they

________ one ________ one another. another.

R E P E LR E P E Lpg. 576

When two magnets When two magnets pull together, we pull together, we

say that they say that they _______ one another_______ one another. .

A T T R A C TA T T R A C T

pg. 576

Which of the materials Which of the materials listed below do magnets listed below do magnets

attractattract?? copper

nickel tin

steel cobalt

iron plastic

woodpg. 576

What are the ends What are the ends of magnets called?of magnets called?

POLESPOLES

pg. 577

Name each type of Name each type of magnet shown below:magnet shown below:

pg. 576

What is the area of What is the area of magnetic force around a magnetic force around a

magnet called?magnet called?

A. magnetic strength

B. magnetic fieldC. magnetic ends D. magnetic tipspg. 578

What is an What is an electromagnetelectromagnet??

An electromagnet is a magnet formed when electric

current flows through wire wrapped in coils around an

iron bar.

pg. 581

Electromagnets can be found Electromagnets can be found in your house. Name some in your house. Name some places where they can be places where they can be

found.found.headphonesheadphones

telephonestelephones

doorbellsdoorbells

motorsmotorsThere are many! Can you think of any

others? pg. 581

BONUS QUESTIONBONUS 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 StaticBalloon Static

Stick or Won’t StickStick or Won’t Stick Making Parallel and Series CircuitsMaking Parallel and Series Circuits

Magnets’ EndsMagnets’ Ends Lines of Force with Iron FilingsLines of Force with Iron Filings

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PLEASE GO PLEASE GO STUDY!STUDY!