Energy and Electricity key words definition

 Energy and Electricity key words definition

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9I Word Sheets
9
Word sheets that include new words from the `Focus on:' pages are available on the
Exploring Science website. I
9Ia ­ The energy exchange
Word Pronunciation Meaning
atomic energy Another name for nuclear energy.
cell sell It contains a store of chemical energy that can produce electricity (the scientific name
for a battery).
chemical energy The kind of energy stored in chemicals. Food, fuel and cells (batteries) all contain
chemical energy.
electrical energy The kind of energy carried by electricity.
energy flow diagram A way of showing energy changes as a flow chart.
gravitational grav-it-ay-shon-al The kind of energy stored by anything that can fall down.
potential energy po-ten-shall
heat energy The hotter something is the more heat energy it has.
joule (J) jool The unit for measuring energy.
kilojoule (kJ) kill-o-jool There are 1000 joules (J) in 1 kilojoule (kJ).
kinetic energy kin-et-ick The kind of energy in moving things.
light energy The kind of energy given out by light bulbs, candles, etc.
machine Something that changes energy from one form to another.
nuclear energy Energy stored inside atoms.
potential energy po-ten-shall The scientific word for `stored' energy.
sound energy The kind of energy that is made by anything that is making a noise.
strain energy The kind of energy stored in stretched or squashed things which can change back to
their original shapes.
transfer When energy is changed from one form into another we say it is transferred.
9Ib ­ Pushing the current/Portable energy
Word Pronunciation Meaning
ammeter Measures how much electricity is flowing around a circuit.
cell sell It contains a store of chemical energy that can produce electricity (the scientific name
for a battery).
current The flow of electrons around a circuit.
electron Tiny particle that flows around a circuit.
in parallel A circuit is in parallel when the current divides, a part going through each component,
then joins up to complete the circuit.
model A scientific way of thinking about how things happen.
rechargeable ree-charge-ab-el Cells that can have more energy stored in them after they have been used are said to
be rechargeable.
resistor A component that makes it more difficult for current to flow ­ resistors are used to
control the size of the current in the circuit.
transfer When energy is changed from one form into another we say it is transferred.
voltage A way of saying how much energy is transferred by electricity.
voltmeter A component that measures voltage.
volt (V) The unit for voltage.
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Exploring Science for QCA Copymaster File 9 469 © Pearson Education Limited 2002

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I Word Sheets (continued)
9
I
9Ic ­ The mains supply/The generation game
Word Pronunciation Meaning
generate Make electricity by turning a magnet inside coils of wire.
generator Large coil of wire with a magnet inside. When the magnet is turned, electricity is
produced in the coil of wire.
kilowatts There are 1000 watts (W) in 1 kilowatt (kW).
mains electricity Alternating current at 230 V provided to houses, shops, etc.
National Grid System of overhead and underground cables that carry electricity around the country.…read more

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