science electricity: lesson 9: open and closed circuits and switches

Science

Electricity:

Lesson 9:Open and Closed

Circuitsand Switches

The BIG Question:

How is current

electricity produced?

•something must touch the positive and negative terminal of the battery•something must touch the threaded base and the tip of the bulb•current electricity can only flow from negative to positive

+ +

++

•electricity needs a complete circle in order to flow

Will the bulb light?

NO!

+

Will the bulb light?

YES!

+

Will the bulb light?

YES!

+

Will the bulb light?

NO!

+

Will the bulb light?

YES!

+ +

Will the bulb light?

NO!

+ +

Will the bulb light?

NO!

+

Will the bulb light?

YES!

+

The BIG Question:

How can I control the electricity

flowing through a circuit?

Inside a

Light Bulb

filament

How can I control the electricity flowing through a circuit?closed circuit

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closed circuita complete circuit

that allows electricity to flow

How can I control the electricity flowing through a circuit?

CL

O S

ED

CI

I

CU R

T

closed circuit

How can I control the electricity flowing through a circuit?open circuit

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open circuitan incomplete

circuit that does not allow electricity

to flow

How can I control the electricity flowing through a circuit?open circuit

O P

EN

CI

I

CU R

T

The circuit is closed.

Electrons flow through the filament and

produce light.

The filament is broken. The circuit is open and no electrons

can flow.

The BIG Question:

How can I control the electricity

flowing through a circuit?

A switch can be used to open and close a

circuit.

. .

2. Draw a picture of your circuit on the top

half of your sheet.3. Use your switch to open your circuit. Then work on your Electricity

Challenge Packet or study your flash cards.

1. Build a switch that will allow you to easily

open and close your circuit.

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switcha device that can be used to open

and close a circuit

Inside a Switch

Closed CircuitOpen Circuit

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 How is Current Electricity Produced? 11-16

Will the Bulb Light? 17

Parts of a Light Bulb 18-19

Open and Closed Circuits 20-22

Electrifying Vocabulary

Ccurrent electricity - pg. 12 circuit - pg. 15 closed circuit - pg. 20

Electrifying Vocabulary

Oopen circuit - pg. 21

Electrifying Vocabulary

S

static electricity - pg. 8

switch - pg. 22