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Unit 10: Electricity Page 12
Textbook Reading
Electrons are strange and unusual repel or attract. Like charges repel
little fellows. Strange things (push away) one another and
happen when too many or too few unlike charges attract one another.
of the little fellows get together.
Some things may be attracted to So if two items that are both
other things or some things may negatively charged get close to one
push other things away. another, the two items will try to
get away from one another. If two
Occasionally you may items are both positively charged,
see a spark of light and they will try to get away from one
sound. The light and another. If one item is positive and
sound may be quite the other negative, they will try to
small or may be as come together.
large as a bolt of
lightning. When electrons gather, How do things get
strange things happen. Those charged?
strange things are static electricity.
Generally things are neutrally
Now that you’ve spent a few charged. They aren’t very positive
lessons learning about the strange or negative. However, occasionally
world of the atom (Unit 3 & Unit (or on purpose as we’ll see later)
8), it’s time to play with them. things can gain a charge.
Electrical Charges Things get charged when electrons
move. Electrons are negatively
Different parts of the charged particles. So if an object
atom have different has more electrons than it usually
electrical charges. does, that object would have a
The proton has a negative charge.
positive charge, the neutron has no
charge (neutron, neutral get it?) If an object has less electrons than
and the electron has a negative protons (positive charges), it would
charge. have a positive charge. How do
electrons move? It turns out that
These charges repel and attract electrons can be kind of loosey
one another kind of like magnets goosey.
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