As you slide down the plastic slide, electrons
move from the plastic to you. Now you have extra
electrons. Touch another person or an object
(anything that isn't negatively charged by extra
electrons) and ZAP! The electrons move from you to
the other object. You get a shock. This is
called static electricity ( more correctly
called "net electric charge" ). It appears
whenever the normal quantities of positive and
negative electricity in a substance are not
Remember that everything is made of atoms, and
atoms in turn are made of positive and negative
electric charges. In other words, your body is
just a collection of positive and negative
electrical particles. Normally the positives
cancel out the negatives, and everything behaves
electrically "neutral." No mysterious sparking.
But if you ever end up with more negative than
positive, or with more positive than negative,
then you have a charge-imbalance on your body.
You will get zapped the next time you touch a
large metal object.
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