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SCI Chapter 6
Electricity
29
Science
4th Grade
10/21/2010

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Term
electrical charge
Definition
property of matter
Term
current
Definition
a flow of charges
Term
circuit
Definition
unbroken path along which current flows
Term
closed
Definition
a circuit that is complete and unbroken and current can flow
Term
open
Definition
a circuit that has breaks of openings in which current cannot flow
Term
switch
Definition
device that opens or closes a circuit
Term
series circuit
Definition
a circuit in which all charges flow in the same direction
Term
parallel circuit
Definition
circuit in which electric current follows two or more paths called branches
Term
voltage
Definition
the strength of a power source, measured in volts
Term
resistance
Definition
the ability of a substance to slow down electric current
Term
attract
Definition
pull together
Term
repel
Definition
push away or apart
Term
neutral
Definition
having no overall electrical charge
Term
static electricity
Definition
the buildup of electrical charges on an object
Term
discharge
Definition
the movement of static electricity from one object to another
Term
conductors
Definition
materials that let charges flow through them easily
Term
insulators
Definition
materials that do not let charges move through them easily
Term
T or F: A battery is an example of a power source.
Definition
true
Term
What are the three basic parts of a circuit?
Definition
power source, load, and connectors
Term
T or F: A short circuit has too much resistance.
Definition
False, a short circuit has almost no resistance.
Term
What are three major kinds of energy that electricity can be changed into?
Definition
heat, light, and motion
Term
transformer
Definition
device that changes the voltage of electric current
Term
circuit breaker
Definition
safety device that turns switch off and opens circuit to stop flow of current if it gets too high
Term
fuse
Definition
safety device that melts and opens circuit if current in a circuit gets too high
Term
T or F: Thunder is an example of static electricity.
Definition
False, lightning is an example of static electricity because it is the discharge.
Term
Is part of a circuit breaks, is the circuit considered open or closed?
Definition
open
Term
Be able to describe what occurs between differently charged objects when brought together.
Definition
answers may vary
Term
Be able to describe how to test if a circuit is series or parallel
Definition
answers may vary
Term
Be able to describe how different safety devices work to prevent problems from too much current.
Definition
answers may vary
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