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Answer the following questions. When you are done, click the
Check Answers button at the bottom of the page.
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1. How can you we make or create static electricity?
a. You can't make
static electricity, because
it is already there.
b. Electrical outlets
are a primary source of
static electricity.
c. Rubbing certain objects
together can
create static electricity
d. Moving copper wire between poles of a
magnet
can create static electricity
e. None of the above.
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2. How does friction cause static electricity?
a. Friction
heats the materials, thus causing
electricity.
b. Rubbing materials
together displaces
atoms, causing sparks to fly.
c. Rubbing materials
together can strip
electrons off atoms, causing the material
to become
positively and negatively
charged.
d. Rubbing materials together causes
neutrons and
electrons to exchange places.
e. None of the above
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3. What electrical charge does an electron have?
a. An electron charge
b. A negative charge
c. A positive charge
d. A neutral charge
e. None of the above
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4. What happens when opposite charges get close to
each
other?
a. They go in the opposite direction
b. They repel each other
c. They attract each other
d. They attract surrounding objects
e. There is no reaction
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5. Why does a balloon rubbed on wool stick to the wall?
a. Opposite charges attract, and a charged
object
will even attract to something
neutral.
b. The surface of the balloon becomes sticky,
because of the rubbing.
c. The balloon doesn't stick to the wall,
the
wool does.
d. The balloon causes all the protons to
become electrons.
e. None of the above
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6. What is a conductor of electricity?
a. A material that allows the free electrons
to
easily travel through it.
b. A material that has an excess of
free
electrons on its surface.
c. A material that has no matter, so the
free
electrons can easily travel through it.
d. Materials which prevent electrons from
escaping.
e. None of the above
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7. What is an insulator of electricity?
a. A material that allows the free electrons
to
easily travel through it.
b. A material that doesn't allow the free
electrons to easily travel through it.
c. A material that protects the free electrons
from excess heat.
d. A material that creates free electrons
e. None of the above
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8. Which is a good insulator of electricity?
a. Copper
b. Iron
c. Rubber
d. Salt water
e. None of the above
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9. Why isn't static electricity used to power our
appliances?
a. It causes too many shocks.
b. It is too expensive.
c. It only occurs during lightning storms.
d. It is not a regular or continuous source
of
power.
e. It doesn't travel through wires.
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10. What causes an electrical spark?
a. A large group of electrons jumping an air
gap, thus heating the air.
b. A large group of electrons glowing in all
directions.
c. A large group of electrons being stripped
from their atoms.
d. Atoms' reactions to electrons leaving them
e. None of the above.
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