Soda Can Electroscope science experiment : Fizzics Education

### Welcome!

Have 10% off on us on your first purchase - Use code NOW10

# Soda Can Electroscope

You will need:

• One empty Soda Can
• Insulation Tape
• One Styrofoam Cup
• Aluminium Foil
• Scissors

1

Tape the can to the styrofoam cup.

2

Cut two strips of aluminium foil, approximately 4cm x 0.5cm.

3

Make a hook on the end of each aluminium strip. Hang the strips off the end of the ring pull tab.

Place the electroscope near your TV. What happens to the strips? Why?

4

“A very simple electroscope!”

Try charging up a balloon by rubbing it with a piece of cloth. Bring it near the electroscope… what happens?

5

#### Get the Electricity & Magnetism Unit of Work here!

• How does electricity actually flow?
• What makes magnets become magnetic?
• Why is there electromagnetism and what does this tell us about electricity & magnetism?
• From series & parallel circuits to conductors & insulators, there’s a lot to explore & learn!

Includes cross-curricular teaching ideas, student quizzes, a sample marking rubric, scope & sequences & more.

6

### School science visits since 2004!

– Over 40 primary & high school programs to choose from.

– Designed by experienced educators.

– Over 2 million students reached.

Face to face incursions & online programs available.

7

### Online courses for teachers & parents

– Help students learn how science really works

### Why Does This Happen?

Like charges repel each other, opposite charges attract each other. As you rub the electroscope, electrical charges from the Aluminium can come down to the Aluminium foil leaves, which then repel each other as they have the same charge, either positive or negative.

As you put this near other statically charged objects (e.g. a TV), the charge strips will move, depending on whether the aluminium strips are attracted or repelled to the appliance. You can tell whether the static from an appliance is positively charged or negatively charged. If an object with the opposing charge is brought near the electroscope, the strips of Aluminium leaves will hang straight down. The strips no longer repel each other because the charge has been discharged.

The electroscope can also be charged by electrostatic induction. If you bring a charged object near the electroscope this will make the leaves also diverge, as the electric field of the object causes the charges in the electroscope rod to separate.

### Variables to test

More on variables here

• How thick can the strips of foil be before it doesn’t work?
• What happens if the soda can is still wet inside?
• Can you attach the can to a metal, ceramic, plastic or glass cup instead?

## 5 thoughts on “Soda Can Electroscope”

1. bob says:

this website is good\

1. Ben Newsome says:

Thanks so much Bob!

2. Bob says:

yeah thanks bob

3. Maxwell Wix says:

Hi I think this will be fun for a projec

1. Ben Newsome says:

It is!

This website uses cookies to improve user experience. By using our website you consent to all cookies in accordance with our Cookie Policy.