A
Materials that allow electricity to move through it easily
Conductor
True or False: A battery is a source of electrical energy in a circuit.
True
Materials that do not allow electricity to move through them easily
Insulator
The flow of electrons is called ...
Current
The built-up of electrons is called ...
Static electricity
Batteries have two poles, what are they called?
Positive and negative
Plastic, glass, and rubber are good examples of electric ...
Insulators
Copper, silver, water, and even the human body are examples of electric ...
Conductors
What is the purpose of a switch?
To switch the circuit from open to closed
What happens when a circuit is broken?
Electricity stops flowing, and the circuit becomes open.
A generator is a tool that can change ... energy into ... current
motion; electric
An electric-pole ... reduces the voltage to a level that can be used in homes
transformer
What is an electric circuit?
A pathway made of wires that electrons can flow through.
What is the symbol for a battery in a circuit diagram? And what is the meaning of that?
Two parallel lines, one long and one short, representing the positive and negative terminals.
What unit is used to measure electric current?
Ampere (Amp).
Electric power can be changed into ..., ..., ..., and ...
Heat, noise/voice, motion, and light
Why is copper often used in electrical wires?
Copper is a good conductor of electricity, meaning it allows electricity to flow through it easily.
Generator facilities (or power plants) can use ..., ..., or ... power.
Water, stream, or wind
A conductor and associated equipment system is designed to transfer electrical energy from generator facilities to places, typically over long distances.
Transmission line
Give 3 examples of sources of electricity!
Battery (wet cell and dry cell battery), dynamo, and generator