P3

OFR 21st Century Science Revision P3

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  • Created by: zoe
  • Created on: 20-05-13 20:23
Electricity is a...
Secondary energy source
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Step one in generating electricity...
The heat is used to boil water which creates steam
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Step two in generating electricity...
The steam drives the turbines which power the generators
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Step three in generating electricity...
Electricity produced in the generators is sent to a step up transformer and then to the national grid
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Step four in generating electricity...
Electricity is distributed to homes and businesses through the national grid at ugh voltages to reduce energy losses
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Step five in generating electricity...
The high voltages are stepped down by a transformer to the mains supply voltage in out homes of 230v
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Nuclear power stations release energy owing to changes in the...
Nucleus of radioactive substances
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Nuclear waste emits ionising radiation, being exposed to this is called...
Irradiation
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If any part of a radiation source was to get on your clothes or enter your body you would become...
Contaminated
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These show the generation and distribution of electricity including the efficiency of energy transfers...
Sankey diagrams
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Renewable energy sources are primary energy sources therefore they will...
Not run out
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Six alternative ways top generate electricity...
Wind, waves, hydroelectric power, biofuel, solar power, geothermal
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In wind turbines what provides power to the generator?
The force of the wind turning the blades
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Water stored in the reservoir flows down pipes and turns the turbines in...
A hydroelectric dam
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A magnet is used to rotate a coil in a...
Generator
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Voltage x Current =
Power
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Power x Time =
Energy Transferred
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Number of units x Cost per unit =
Total Cost
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Energy usefully transferred / Total energy supplied x 100 =
Efficiency
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Material that is a poor conductor of heat...
Insulation
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Other cards in this set

Card 2

Front

Step one in generating electricity...

Back

The heat is used to boil water which creates steam

Card 3

Front

Step two in generating electricity...

Back

Preview of the front of card 3

Card 4

Front

Step three in generating electricity...

Back

Preview of the front of card 4

Card 5

Front

Step four in generating electricity...

Back

Preview of the front of card 5
View more cards

Comments

selma

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this is good but p2

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