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GCSE C21 P3
GCSE C21 P3 Unscramble
energy source | Can be used for energy! |
power station | They generate electricity here. |
thermal power station | They generate electricity using steam to drive a turbine. |
social impact | The effect on society. |
environmental impact | The effect on the environment. |
efficiency | Useful energy output / total energy supplied |
carbon footprint | CO2 emissions. |
power | Energy transferred per second. |
energy | Measured in joules or kilowatt-hours. |
demand | How much power we want. |
primary source | e.g. fossil fuels, solar, etc - can be used to generate electricity |
secondary source | e.g. electricity - we use a primary energy source to generate this |
fossil fuel | 3 fuels - coal, natural gas, crude oil. |
domestic | Relating to the home / household. |
Sankey diagram | shows energy flow through a process / device |
generator | Spin this to make electricity. |
voltage | Use current and this to calculate electrical power. |
turbine | Can be driven by steam, water or wind. They make this spin. |
wave | Energy source - only from the sea. |
wind | Energy source - can be on land or in the sea. |
hydroelectric | Energy source - uses water flowing down from high mountains. |
nuclear | Energy source - produces radioactive waste. |
thermal | 'heat' energy |
biofuel | Energy source - can be grown, might be plant or animal waste. |
solar | Energy source - from the Sun. |
geothermal | Energy source - pump water down into the rocks to make steam. |
tidal | Energy source - works twice each day. |
power output | How many watts (kilowatts, megawatts etc) a power station can produce. |
lifetime | How long a power station can usefully work. |
security of supply | We don't want to have no energy! |
joule | Standard unit for ENERGY. |
kilowatt-hour | A large unit for ENERGY. |
second | Standard unit for TIME. |
hour | A large unit for TIME. |
watt | Standard unit for POWER. |
kilowatt | A large unit for POWER. |
amps / amperes | Standard unit for CURRENT. |
volts | Standard unit for VOLTAGE or POTENTIAL DIFFERENCE. |
radioactive waste | Risk related to nuclear power stations. |
radioactive | Gives out radiation from its nucleus. |
ionising | Can damage molecules (including DNA). |
contamination | If a radioactive material comes into contact with a person of their clothing. |
irradiation | When a person is exposed to ionising radiation. |
risk | Might be harmful. |
benefit | The good that comes from something. |
perceived risk | How dangerous people THINK it might be. |
calculated risk | How dangerous something is, based on statistical / scientific evidence. |
waste | Unwanted left over. |
boiler | In a thermal power station, where water is turned into steam. |