Electricity is actually made up of extremely tiny particles called electrons, that you cannot see with the naked eye unless you have been drinking.
Most American homes have alternating current, which means that the electricty goes in one direction for a while, then goes in the other direction. This prevents harmful electron buildup in the wires.
We believe that electricity exists, because the electric company keeps sending us bills for it, but we cannot figure out how it travels inside wires.
Today's scientific question is: What in the world is electricity? And where does it go after it leaves the toaster?
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