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7J (a and b)
Science 7
| Question | Answer |
|---|---|
| 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
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