GCSE Combined Science (AQA)
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Energy
National and global energy resources
Nuclear Power Risks
2:00
Environmental Impact of Energy Resources
Spec
4.1.3
- Nuclear fuels do not produce pollutant gases like fossil fuels.
- Gas released from nuclear reactors is harmless steam.
- Nuclear power stations are controversial due to environmental impacts.
- They do not produce carbon dioxide or sulfur dioxide.
- Nuclear reactors produce radioactive isotopes.
- Smaller nuclei created in reactors are radioactive and undergo decay.
- These products are referred to as nuclear waste.
- Radiation is harmful to health and can contaminate the environment for centuries.
- Nuclear waste must be safely stored for hundreds of years.
- Waste is often sealed in lead containers underground or in disused mines.
- Nuclear power stations are designed to prevent radiation leaks.
- Concrete shields are used to prevent radiation from escaping.
- Extensive research and care are involved in handling and transporting waste.
- Safety measures include emergency shutdowns for out-of-control reactions.
- There is a risk of accidents, as seen in Chernobyl (1986) and Fukushima (2011).
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