Vocabulary
Vocabulary
Electricity
Magnets and
Energy
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Potpourri
A material that
lets electricity
travel through it
easily
conductor
Energy an object
has because of its
position or
condition
Potential
energy
An electrical
charge that builds
up in an object
Static
electricity
An object
that attracts
iron
magnet
A path that has
more than one way
an electric current
can flow
Parallel
circuit
The energy
of motion
Kinetic
energy
A machine that
produces electric
current
generator
A temporary
magnet
electromagnet
A machine with few
or no moving parts,
to which only one
force is applied
Simple
machine
A bar that
pivots on a
fixed point
lever
What is the name
of a path that has
only one way for
the current to
flow?
Series
Circuit
Which is a good
conductor of
electricity?
A. Copper B. Glass
C. Plastic D. rubber
Copper
What is a stream of
electrons moving
through a copper
wire called?
Current
electricity
Ryan wants to build
a small electric
generator. What two
items must he have
to make his
generator?
Coil of wire and
magnet
What is the
difference between
a series circuit and
a parallel circuit?
A parallel circuit there
is more than one path
for electrons to follow.
A series circuit has
only one path for the
current to follow.
A magnet will hold papers
to a refrigerator, but
papers are not attracted to
a magnet. What can be
concluded about the
refrigerator, the magnet,
and the papers?
Magnetic forces
pass from the
magnet, through
the papers, to the
refrigerator
What is stored in
the bonds that hold
compounds
together?
Chemical
energy
What kind of energy is
also called energy of
position?
potential
Suppose you are testing the
strength of an electromagnet.
You are changing the
number of loops of wire.
You are measuring how
many paper clips the
electromagnet can pick up.
Describe a table that you
would use to record the data.
You would come up
with a two column
table with headings
“Loops” and “Paper
Clips Picked Up”
Aastha and her family visited a large
dam, where they were told that the
kinetic energy of falling water was
changed to electrical energy. What
kind of power did this dam produce?
a. Chemical energy b. Solar power
c. Geothermal energy
d.Hydroelectric power
Hydroelectric
power
Batteries supply a stream of
electrons to power toys and
electronics. When some
batteries wear out, they can be
recharged. Explain how this
might be possible.
Electrons move from one
place in a battery, through the
toy or other device, to another
place in the battery. The
direction of electron flow is
reversed to recharge a battery.
Offices, homes, and factories
each use about the same
amount of electricity. If you
made a pie graph to compare
the amounts used, what
fraction of the graph would be
labeled for each user?
Each fraction
would be the same,
one-third
Screws have threads that are
simple machines. What kind
of machine are the threads
on screws?
a. Blades b. inclined planes
c. Fulcrums d. wedges
Inclined
planes
Where does food
first begin to be
digested?
mouth
What helps
food become
digested in the
stomache?
Stomache
enzymes