Let's Explore Electricity! Electricity is the most widely used
form of energy. Its uses range from the miniature batteries that
operate your wristwatch to huge motors that power trains and
ships. Electricity operates our lights, runs our refrigerators
and powers motors. It first must be changed to other forms of
energy such as heat, light or mechanical to be useful. You can't
see electricity but you can see what it does like when you turn
on a light. How It Works Atoms make up all things. You can't see
atoms because they're so tiny but you can imagine what they look
like. Each atom is made up of PROTONS, NEUTRONS and ELECTRONS.
Protons have a positive (+) charge, electrons have a negative
(-) charge and neutrons have no charge. The protons and neutrons
make up the NUCLEUS or center of the atom. The electrons circle
around the nucleus like the planets orbit around the sun. If an
atom has the same number of protons and electrons it is balanced
and has a neutral charge. When an electron gets knocked out of
its o