Year 11 - Science
Nuclear power
Nuclear physics
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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 covers atomic structure, isotopes, radioactive decay, and half-life. It explores alpha, beta, and gamma radiation, nuclear fission and fusion, and the uses of radiation in medicine, highlighting differences between contamination and irradiation.
Lesson Summary
You will learn to compare the pros and cons of the generation of electricity using nuclear power.
Key Notes
- The products and by–products of nuclear fission are often radioactive.
- The products and by–products of nuclear fission need to be safely stored for very long periods of time.
- Nuclear reactors do not emit carbon dioxide and risks of catastrophic failure are very small.
- Nuclear fusion requires extremely high temperatures such as those found in the centre of stars.
- Nuclear fusion power stations would create very little radioactive waste, but have not yet been developed.
Vocabulary To Learn
- nuclear waste: produced in nuclear power plants; high–level waste is the most radioactive and dangerous
- radioactive contamination: caused when radioactive materials are released into the environment
- decommissioning: the process of shutting down and dismantling a nuclear power plant, which is very expensive
- carbon emissions: emitted from fossil fuel power stations and are mostly carbon dioxide, which is a greenhouse gas
- nuclear fusion: the combining of small nuclei at very high temperatures with the release of energy
Common Mistakes To Avoid
- Nuclear power stations continually emit radiation into the environment.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
The products and by–products of nuclear fission are often radioactive. The products and by–products of nuclear fission need to be safely stored for very long periods of time.
2. Define this scientific word and use it in context. 'nuclear waste'
produced in nuclear power plants; high–level waste is the most radioactive and dangerous. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Nuclear power stations continually emit radiation into the environment. Correction: Clearly distinguish day–to–day processes and the lack of emissions from the generation of nuclear waste, and methods for dealing with it.
More Lessons In This Unit
- Activity and half-life calculations Study Guide
- Activity and half-life calculations (including complex ones) Study Guide
- Evidence of atomic structure Study Guide
- Ionising radiation Study Guide
- Nuclear decay Study Guide
- Nuclear decay (including beta–plus) Study Guide
- Nuclear fission and fusion Study Guide
- Nuclear power stations Study Guide
- Radioactive half-life Study Guide
- Unstable nuclei Study Guide
- Uses of radiation Study Guide
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