A Science2Life Creation

From chaos to calm – make your own mini ‘snow’storm then we wowed by static magic!

A fantastic demonstration which can be used to visualise the fact that like charges push against each other and opposite charges pull together.

It is also a fun and creativity demonstration that can be used to help explain how lightning is formed in clouds!

TRANSPARENT LATEX BALLOONS 10 PACK with a small bag of polystyrene beads

The charged balloon is rubbed on hair, causing the polystyrene beads inside to stick to the rubbed areas due to static electricity.

• Size: 30 cm (12 inches)
• 10 pack
• Transparent balloons
• Made from natural rubber latex
• Bag of polystyrene beads

STATIC ELECTRICITY DEMONSTRATION

Secrets for Success

• A balloon pump must be used to inflate the balloons as there is too much moisture in our breath. Water prevents the build-up of static charge.
• Don’t over inflate the balloon – you don’t want it to explode.
• Store your latex balloons away from sunlight, preferably in an opaque container. Sunlight and ozone combine to oxidise the surface of the balloon which then weakens the balloon.

Science in a Nutshell

When insulating materials – in this case the latex balloon and the polystyrene beads – rub against each other, they may become electrically charged. Electrons, which are negatively charged, are pulled from one material on to the other. The material that gains electrons becomes negatively charged. The material that loses electrons is left with an overall positive charge.

The rubber balloon loses its electrons to the polystyrene beads.

Scientific Sue holds a charged balloon to demonstrate static electric forces during an Intel science event for students.

Like charges repel each other – this is why the polystyrene beads spread out on the inside surface of the balloon.

Opposite charges attract – this is why the polystyrene beads stick to the surface of the balloon.

When the balloon is rubbed on hair, charges move from the hair to the balloon. The balloon and the hair then have opposite charges. When you slowly lift the balloon away from the hair the electric force of attraction is strong enough to lift the hair.

The size of this force decreases with distance so as you keep moving the balloon away from the hair the hair will eventually drop. However, when you then bring the balloon closer to the head the hair will then spring back up!

We also sell a wonderfully magical toy called a wandarama which uses electrostatic pushing forces to get tinsel shapes to fly about the room like magic! Want to find our more? Click on link.

The post STATIC ELECTRIC FORCE BALLOON DEMO 10 PACK appeared first on Science2Life.