Year 8 - Science
Power stations
Fuels and energetics
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit examines energy changes in state, exothermic and endothermic reactions, and energy transfers in various processes. It emphasises objectivity, accuracy, and precision in scientific enquiries, data interpretation, and the use of tables, graphs, and reliable methods.
Lesson Summary
You will learn to describe how burning fuels can be used to generate electricity.
Key Notes
- Over half of the electricity in the UK is generated from the Sun, wind and falling water.
- Many power stations in the UK burn natural gas and oil to heat water into steam.
- The moving steam in power stations pushes turbines, which drive electric generators that produce electricity.
- Natural gas and oil are fossil fuels used in power stations; coal is no longer used in UK power stations.
- Natural gas, oil, waste and wood are fuels that produce greenhouse gases and pollutants when burned.
Vocabulary To Learn
- electric generator: works like a motor in reverse, generating electricity when it is pushed round
- fuel: a substance that is burned for heating
- non-renewable resource: a resource that cannot be replenished
- pollutant: a substance that causes damage to air, water or land and is likely to harm living organisms
- greenhouse gases: gases in the atmosphere that keep it warmer than it would be without them
Common Mistakes To Avoid
- Power stations generate most of the electricity that we use in the UK.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Over half of the electricity in the UK is generated from the Sun, wind and falling water. Many power stations in the UK burn natural gas and oil to heat water into steam.
2. Define this scientific word and use it in context. 'electric generator'
works like a motor in reverse, generating electricity when it is pushed round. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Power stations generate most of the electricity that we use in the UK. Correction: Highlight how over half of UK electricity is now generated using renewable energy resources and that power stations contribute about a third of the electricity. Also highlight the continuing need for power stations due to varying weather and demand.
More Lessons In This Unit
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