Topic 11b Energy & Electricity Flashcards
Key Words: Generator
A machine that produces electricity
What do we call the source of electricity for most of our appliances in our homes?
Mains electricity
Where do we get our mains electricity from?
From a very big electrical circuitCalled the “NATIONAL GRID”
How does the electricity get to our homes?
Through a system of wires and cables Which takes the electricity from a power stationTo our homes, schools & workplaces
What happens to the some the electrical energy as it goes through the system?
It changes to HEAT
Why do we have power stations?
Because it’s a source of mains electricity
Were do power stations get their energy?
Coal (mostly)
What are transmission lines?
Thick metal cables through which electricity goesFrom a power stationTo the substations
What is the purpose of pylons?
To support the transmission lines
Name the things involved in carrying electricity from the Power Stations to peoples homes, schools and workplaces?
SubstationsUnderground cablesOverhead wires
What does a building need for it to be connected to mains electricity?
An Electricity Box
What is the point of an electricity box?
It is where the electrical wires from a substationAre connected to the electrical circuitsIn a building
List some of the parts that make up an electricity box?
- Electrical wires2.Electricity meter3. Trip Switch
Where are the electricity wires of circuits in buildings?
In the walls or ceilings
What do you call the thing that is between the electrical wires and the appliances?
Wall sockets
