If you have been adhering to my blog, you can know already, that ns love a an excellent hands-on experiment served with the an excellent ol’ inquiry. These static electrical energy experiments I’m going to explain are just that – triggered with a question, lock awe students into wanting to inspection the nature of hair standing to every sides, balloon floating ~ above the ceiling and also maybe even waterbending with a comb. So let’s dive into the physics behind these fascinating experiments.

You are watching: Why does a balloon stick to the wall after rubbing it on your hair

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Rubbing a balloon over your hair will most likely leave you through a hairstyle similar to Albert Einstein.

This experiment might be a story as old as time however it almost every time captures childrens’ curiousity and interest. They just WANT to perform it themselves. See how their hair was standing apart. Laugh at every other. Perhaps even try to placed the balloon approximately the ceiling or the wall. I recognize that I always did. And also still do, as a matter of fact. However what precisely is happening once I obstacle the balloon end my head? periodically I can even hear a crackling, favor electricity.

And it’s something favor that. The phenomenon is dubbed static electricity and also it’s electrons moving somewhat easily in the material. Once a rubber balloon is rubbed versus human hair, electrons room transferred native the hair come the balloon, giving the balloon a an unfavorable charge, and leaving the hair with a optimistic charge. The hair is attractive to the balloon, since the materials have actually opposite charges. When the balloon is pulled away from the hair, the confident charge of the hair renders the hair was standing out, since the positive charge top top the separation, personal, instance hairs causes each hair come repel the various other hairs. That’s why you finish up feather a little like Albert Einstein.

And placing the (now negative charged) balloon come a ceiling or a wall brings increase the following question: how does the balloon stick come the wall or ceiling? over there is no glue, no string and the wall surface is not positively charged favor our hair is in ~ the minute (still spring funny, huh?).

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A balloon sticking to the ceiling. Exactly how does this also work?

This is where the scientific thinking comes in. Remember how I claimed that electron are relocating somewhat easily in the material? That’s just how they to be able to transfer from our hair to the balloon anyway. And also it’s the very same in the ceiling or the wall. The negatively fee balloon repells the electrons (which are an adverse charges) in the wall, leaving only the positive charged ion (ions are charged atom or molecules) behind. These room attracted to the negatively charged balloon but due to the fact that the wall cannot move, the balloon just sticks to the wall.

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The negatively charged balloon repells the electrons in the wall, leaving only positive ions which tempt the balloon and make it stick come the wall.

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Over time, the electrons will wander native the balloon come the wall, make the balloon fall to the ground. It will certainly not stick come the wall surface forever. However still, it provides for a great demonstration and also since us can’t watch what’s continue in the wall or ceiling, we should induce what might happen from our previous experiments.

There room several an ext cool static electricity experiments prefer bending water v a balloon, utilizing a van de Graaff generator or demonstrating a jacob’s ladder and its spark gap. These take it up a little much more explaining 보다 just basic positive and an adverse electrical charges but are worth a look at in scientific research classrooms due to the fact that they do for amazing demonstration experiments. Specifically with regards of the basic static electrical energy experiments I simply presented to you, the topic deserve to be embedded as sort of a spiral curriculum and also students can fall back on their understanding on charges and static electricity.