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Electricity
Flashcards on Electricity
27
Science
8th Grade
01/31/2012

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Cards

Term
What is an atom?
Definition
Small particles that matter is made up of
Term
Neutrons
Definition
no charge
Term
Protons
Definition
positive charge
Term
Electrons
Definition
negative charge
Term
Atoms that LOSE electrons become
Definition
positive
Term
Atoms that GAIN electrons become
Definition
negative
Term
What is the Law of Electric Charges
Definition
like charges repel and opossite charges attract
Term
The greater the charge the greater the
Definition
electric force
Term
What are the 3 ways to charge an object?
Definition
Induction, friction, and conduction
Term
When something is static it is not
Definition
moving
Term
What happens when charges are unbalanced?
Definition
Electrons move from higher to lower potential
Term
What is the formula for ohms law?
Definition
v=ir
Term
What happens in a short circuit?
Definition
the current takes an unintended path
Term
What happens in a series circuit?
Definition
The current follows a straight path
Term
What happens in a parallel circuit?
Definition
The current follows multiple paths
Term
What is electric potential measured in?
Definition
volts
Term
What is resistance measured in?
Definition
ohms
Term
In an electric current the greater the flow of charge the greater the
Definition
current
Term
What is electric current measured in?
Definition
Amps
Term
The greater the voltage the greater the
Definition
current
Term
Currents can produce ________.
_______ can produce currents.
Definition
Magnetism
Term
What does a Generator do?
Definition
converts energy of motion into electrical energy
Term
What is a direct current?
Definition
A current that flows in one direction
Term
What is an alternative current?
Definition
A current that reverses directions at regular intervals
Term
[image]
Definition
Field lines that show direction of magnetic force
Term
What does moving electric charges do?
Definition
transfer energy
Term
What does a circuit do?
Definition
control the flow of electric charges
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