Vocabulary
What is a conductor?
A material that allows electric current to flow through it.
What is a circuit?
A connected set of electrical elements that make a loop.
What is an incandescent light bulb?
A bulb that glows as a result of electric current flowing through the filament.
What energy changes happen in a motor?
Electrical to movement (kinetic)
What is a battery terminal?
The negative or positive ends on a battery.
What is electricity?
The flow of electric charges as electrons
What is a circuit diagram ?
A drawing of a circuit using standardised symbols.
What is filament?
What is the coiled piece of wire inside a bulb that glows when electric current passes through it.
What happens to a light bulb as you add more batteries to it?
It will get brighter.
What does a voltmeter measure?
The "strength" of a battery or power source.
What is an insulator?
A material that does not allow an electric current to flow through it.
What is the purpose of the switch in a circuit?
A mechanical device used to open or close a circuit.
Where is tungsten used?
It is the metal used to make the filament in an incandescent bulb.
What is a fuse?
A circuit safety device containing a thin wire designed to melt and break when too much current passes through it.
What is an electric current?
The flow of electric charge.
What is a resistor?
A material that prevents the flow of electric current through it.
What is a series circuit?
A circuit in which there is only one path for the flow of electric current.
What is a fluorescent bulb?
What is a bulb that gives off light as a result of electric current entering a tube and reacting with gases inside the tube, causing them to glow.
What is a difference between a switch and a fuse?
What is a switch can open and close the circuit repeatedly where as a fuse needs to be replaced after it melts.
How can you make a light bulb glow brighter?
Add more batteries to the circuit
What is Nichrome wire?
A nickel and chromium alloy wire that is highly resistant to current and able to withstand high temperatures.
What is a parallel circuit?
A circuit in which there is more than one path for the flow of electric current.
Why is the filament sealed inside a glass shell?
What is if oxygen were to tough a very hot wire, it would cause the wire to burn and break.
Why do some wires get hot?
There is more friction is created inside high resistance wires therefore producing heat.
How does a battery create electricity?
The chemicals inside reacting together causing electrons to move and give up energy.