# Science Electricity: Lesson 3: Attract and Repel.

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Science Electricity: Lesson 3: Attract and Repel

Let’s Review!

everything around us that takes up space matter

the smallest part of all matter atom

the center of an atom nucleus

the particles in an atom that have a positive charge protons

the particles in an atom that have a negative charge electrons

the particles in an atom that do not have any charge neutrons

The BIG Question: How is static electricity produced?

+ + - - 0 0 no charge - + 00

the buildup of electrical charge on an object static electricity

+ + + - - - 000 + + + - - - 000 negative charge positive charge sock sweater - -

The BIG Question: How do electrical charges affect one another?

How do opposite charges affect one another? + -

do nothing + - attractrepel

Here is what I did to make my two objects have opposite charges: ________________________________________ Here is what happened when I put my objects next to each other: _______________________________________________ What will happen if two objects with opposite charges are placed next to each other?

What did you do to make your hair and your balloon have opposite charges?

+ + + - - - 000 + + + - - - 000 negative charge positive charge balloon hair

I conclude that objects with opposite charges will ______________ ____________________________________________________ I know this to be true because _____________________________ ____________________________________________________ This happened because ___________________________________________ _________________________________________________________________ What will happen if two objects with opposite charges are placed next to each other? attract (stick together). my hair stuck to the balloon. my hair had a positive charge and the balloon had a negative charge.

How do opposite charges affect one another? + -

How do like (same) charges affect one another? + - - +

Here is what I did to make my two objects have like (same) charges: ________________________________________ Here is what happened when I put my objects next to each other: _______________________________________________ How do like (same) charges affect one another?

I conclude that objects with like (same) charges will ____________ ____________________________________________________ I know this to be true because _____________________________ ____________________________________________________ This happened because ___________________________________________ _________________________________________________________________ What will happen if two objects with opposite charges are placed next to each other?

What did you do to make both balloons have the same charge?

+ + - - 00 negative charge balloon 1 hair + + - 0 0 + + - - 00 negative charge balloon 2 hair - - - - + + + 0 0 0

What happened when you put your two balloons next to each other?

I conclude that objects with like (same) charges will ____________ ____________________________________________________ I know this to be true because _____________________________ ____________________________________________________ This happened because ___________________________________________ _________________________________________________________________ What will happen if two objects with opposite charges are placed next to each other? repel (push apart). the two balloons pushed away from each other. both balloons had a negative charge.

+ + + + ++ + + + + + + + + + + + + + + +

My Prior Knowledge 1-2 All About Atoms 3-4 How is Static Electricity Produced? 5 Electrifying Vocabulary 6-8 How Electrical Charges Affect One Another 9-10

Electrifying Vocabulary A atom - pg. 5 attract - pg. 9

Electrifying Vocabulary R repel - pg. 10

Ticket Out the Door How do electrical charges affect one another? repel attract like (same) opposite