Chapter 12Lesson 4

Electricity

Pgs. 562-571

Please Do Now!At the top of your page, make a

list of everything you use electricity for.

Please share with a partner.

All matter is made up of tiny particles called atoms.

Atoms contain particles with both positive and negative

electrical charges

We can show a positive charge as a plus sign (+) and a negative

charge as a minus sign (-).

Opposite charges attract each other, and like charges repel

each other.

Think About ItHave you ever gotten a “shock”

when you’ve touched something. Think about what it was and

what you did leading up to the “shock”. In the margin of you paper, explain your “shocking

experience”.

The buildup of electrical charges on a material is called static

electricity.

Lightning is a discharge of static electricity during a storm.

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The path along which electric current flows is called a circuit.

A continuous flow of electricity through a circuit is called current electricity. An unbroken circuit

is called a closed circuit.

A circuit with a gap is an open circuit; a circuit can be open and

closed with a switch.

Electric current flows along a single path in a series circuit.

A parallel circuit connects each load to the power source by

different paths called branches.

A fuse box and a circuit breaker are two safety devices that open

a circuit when the current of electricity is dangerously high.

Why do you think there’s only one shock after you rub your socks (while your feet are in

them) on the carpet and then touch the doorknob, but when

you rub a balloon on the curtains or carpet and place it on the wall, it stays there for a long

period of time?

Exit Question