Science Quiz - Energy Resources 01 (Answers)
See how much you know about energy resources in this KS3 Science quiz. As the population increases, so does our need for energy. Most energy sources are used to generate electricity and provide heat or hot water in cold conditions. Apart from nuclear and geothermal energy, all sources of energy on the Earth can be traced back to the Sun (and Moon in the case of tidal energy).
During the Industrial Revolution and throughout the 20th century, the main source of energy was by burning fossil fuels. Fossil fuels are coal, oil and gas. They are called fossil fuels because they were formed millions of years ago from the remains of plants (coal) and dead sea creatures (oil and gas). The main problems with the use of fossil fuels are pollution and the fact that they will be used up at some point in the future (non-renewable).
In order to try to solve these problems, scientists and engineers have attempted to find alternative energy sources based not only on wind and water but also the Earth's own heat and the heat and light from the Sun. Biomass energy is similar to using fossil fuels. Animal waste and plant debris is placed into a large container called a digester. In the digester, the waste breaks down and releases methane. This can be burnt and the heat used to boil water to generate electricity.
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You can find more about this topic by visiting BBC Bitesize - Energy
The Sun provides heat and light for renewable forms of energy resource
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Electricity is not a fuel
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Some scientists think that we will have used up all of the possible oil reserves by the end of the 21st century
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Coal was formed from the remains of plants and trees
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Uranium is a nuclear fuel and is non-renewable
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All the others involved plants at some stage
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Hydroelectric relies on running water to generate electricity and geothermal relies on heat from the Earth
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The heat energy is used to produce steam. Technically, light and sound energies are also released, but it is the heat energy we want
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Power stations are connected to the National Grid for the electricity to be sent all round the country
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Carbon dioxide and air pollution levels both increase
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