5496144
Descrição
FlashCards por nadine pownall, atualizado more than 1 year ago
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Criado por nadine pownall
mais de 8 anos atrás
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| Questão | Responda |
| Name three fossil fuels | Coal, Oil and Gas. |
| What is the process by which energy is produced in a nuclear power station ? | Nuclear Fission |
| What form of energy is stored in the water in the top reservoir of a pumped storage station ? | Gravitational Potential energy |
| Why is wave power likely to be less reliable than Tidal power ? | There are always two tides a day (tides depend on gravitational pull of the sun and moon), but on a calm day there may not be many waves (waves depend on winds, which are unreliable) |
| Why are large numbers of solar cells often joined to make a solar panel ? | Each solar cell only produces a small amount of electricity. |
| Why are only a few places in the world able to have geothermal power stations ? | in many places in the world the hot rocks are too far below the surface to be used. |
| What type of area would be most suitable for a wind farm ? | A large, flat area of high ground. |
| What is the difference between a renewable energy source and a non-renewable energy source ? | A renewable energy source is produced as fast as it is used. A non-renewable energy source is one that is used at a much faster rate than it is produced. |
| Which gas, released by the burning of coal, causes acid rain ? | Sulfur Dioxide |
| Give two advantages of overhead cables compared to underground cables ? | Overhead cables are easier to repair and are cheaper. |
| What sort of transformers are used at local sub-stations ? | A step-down transformer |
| Why does the demand for electricity vary between summer and winter ? | The demand increases in winter because it gets colder so more electricity is used heating homes. |
| In what form is energy stored in the top reservoir of a pumped storage scheme ? | Gravitational Potential energy. |
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