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7J (a and b)

Science 7

ammeter Measures how much electricity is flowing around a circuit
amp The unit for current
cell A source of electricity with a low 'energy'. Cells push electrons round a circuit.
circuit A complete loop that electricity flows around
component Something in a circuit, like a bulb, switch or motor
conductor A material that lets electricity flow through it
electric current The flow of electricity around a ciruit
insulator A material that does not let electricity flow through it
mains (electricity) Alternating current at 230 V provided to houses, shops, etc
power pack A source of electricity with a low energy (low voltage)
switch Turns electricity on or off, by closing or opening a gap in a circuit
voltage A way of saying how much energy is transferred by electricity
atom Th smallest part of an element
electric current The flow of electrons around a circuit
electrical energy The kind of energy carried by electricity
electron Tiny particle that flows around a circuit
filament Thin piece of wire inside a light bulb that glows when electricity is flowing through it
model A scientific way of thinking about how things happen
resistance A way of saying how difficult it is for electricity to flow through something
resistor A component that makes it difficult for electricity to flow
variable resistor A resistor that can be adjusted to change the amount of reistance it has
voltage A way of saying how much energy is transferred by electricity
Created by: tescommonstacks