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GCSE
Gcse Physics
Electricity - Methods We Use To Generate Electricity
Solution
Q.1.
What is an advantage of nuclear power?
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Radioactive waste produced
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No CO2 or SO2 produced
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Costly decommissioning process
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Long start-up time
Q.2.
What is an advantage of overhead electrical lines compared to underground lines?
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Cheaper to repair
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Affected by weather
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There is no advantage to using overhead lines as opposed to underground
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Overhead lines produce more electricity
Q.3.
What is an advantage of using water pumped storage systems?
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Uses less electricity
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Increases cost of electricity at peak times
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Creates electricity at peak times enabling demand to be met
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It creates free electricity
Q.4.
How do solar cells create electricity?
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Absorb light energy from the sun
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Use turbines which are turned by the wind
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Turbine turned by water flows through pipes
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Uses steam produced in the Earth's crust to drive turbines
Q.5.
Which of the following fossil fuels has the shortest start-up time?
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Coal
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Oil
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Gas
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They all have the same start up time
Q.6.
What is an advantage of renewable sources of energy?
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Produce small amounts of electricity
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There is an unlimited supply
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High maintenance
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High initial capital outlay
Q.7.
What is an advantage of using gas?
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Risk of spillage during transport
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Produce CO2 and SO2
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Flexible in meeting demand and has a quick start-up time
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Produce radioactive material
Q.8.
Which of the following materials are used in nuclear reactors?
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Argon
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Kryptonite
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Coal
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Uranium and plutonium
Q.9.
What is an advantage of burning coal?
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Cheap and plentiful supplies
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Produces more CO2 per unit of energy than oil or gas
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Causes acid rain
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Will never run out
Q.10.
Why is decommissioning a nuclear power plant expensive?
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The radioactive material has to be fired into space
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Radioactive material needs to be disposed of
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It is no more costly than decommissioning any other power plant
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The material left over has to be used and this takes time and requires man power to ensure the material is safely burned
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