NS Mains Grade 5 Flashcards
scientific name for battery
cell
what is path through which the electricity flows
an electric circuit
parts of the electric circuit (like bulb, battery, switch)
components
electricity we use at home
what is mains electricity
things you do to stop something dangerous from happening
what are precautions
a substance that can be eaten or burned to produce energy
fuel
when you say what you think will happen
predict
Where can energy be stored
in cells and batteries
where is main electricity made
in power stations
what does a power station need to make electricity
a source of energy like coal
What is a device that uses electrical energy to work called
appliance
What are the terminals of batteries?
negative (little knob) and positive (flat side)
what is the amount of energy in a battery measured in?
volts
how does a torch cell or battery change energy?
Stored energy is changed into electrical energy
what is an electrical circuit
a system that transfers electrical energy to where it is needed
what is the national grid
network of cables and power lines that bring electricity from power stations to houses
what do powerstations in South Africa use as a fuel
coal
what do you call the big structures that support the power lines
pylons
what do substations do
reduce the high voltage electricity to lower voltage. they transfer the electricity to the homes and buildings
why is energy from a power station transported as high voltage
during transportation energy gets lost as heat
Do page 153 with mom
…
name some things as a safety precaution of electricity
stay away from power lines, stay away from substations, do not fly kites close to power lines, don’t climb on pylons, don’t poke fingers in sockets don’t plug too many things in together
give some actions in case of emergency with electricity
turn off the power source, do not touch anyone else (they can get a shock), call emergency lines, 107 or 112
the wheel is connected to a rod, the rod is called….
axle
