Science

Electricity:

Lesson 8:How a Bulb Works

Day 1

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

yes

Will the bulb light?

no

no

no

yes

yes

yes

yes

X

X

X

X

X

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

•something must touch the positive and negative terminal of the battery•something must touch the threaded base and the tip of the bulb•electricity needs a complete circle in order to flow•current electricity can only flow from negative to positive

How are the parts of a light bulb important for making it

light?

How are the parts of a light bulb important for making it light?

Draw a picture of a light bulb

and label the parts.

Supplies for TodayPerson A:

paper toweltwo pieces of clay

Person B: Box2 batteries

2 battery holders2 wires

1 piece of nichrome wirepiece of paper clip

1A. Place 1 battery in a battery holder.

2B. Use a paper clip to connect this battery holder to a second battery holder.

2B. Use a paper clip to connect this battery holder to a second battery holder.

3A and B. Attach one wire to the other end of each

battery holder.

4A. Knead each piece of clay to make

it soft.

5A. Place one piece of clay in the center of your paper towel.

6A. Push your two wires into the clay

so they are about a pinky width apart.

7A. Push the second piece of clay down on top of the wires to

hold them in place.

8B. Wrap the nichrome wire around the

top of your two wires so that it is pulled tightly between them.

9B. Place the second battery in the holder. Make sure your batteries are connected from negative to positive!

How are the parts of a light bulb important for making it light?

Draw a picture of a light bulb

and label the parts.

Draw a picture of your light bulb

model.