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AS energy issues revision

• Energy resources
• Global energy distribution
• Impacts of energy production
• Sustainable energy
• Managing energy Case studies

Types of energy

• Primary energy is released from a direct source- when primary energy is converted into a different form it becomes secondary energy
• Renewable resources
• A source is renewable if it can be replenished at a similar rate to which it's used. Renewable resources are also known as flow resources. There's a constant energy transfer occurring, which if balanced will be sustainable. Tidal energy, wind energy and solar power are all renewable resources because you can't use them.
• Non renewable resources
• They can run out and can't be replaced in the foreseeable future. They're also known as stock resources as the planet has a limited stock which when used up won't be replaced. Fossil fuels and nuclear energy is non renewable.

Energy resources

• Over 70% of UK energy is provided by oil and gas.
• Since the 1970s the consumption of oil increased due to the discovery of north sea in 1969 and growing demand for transport fuel.
• Natural gas has increased by 85% since 1990
• Despite having large reserves coal has fallen by 40% due to closure mines and the move to less polluting oil and gas.
• Renewable resources has increased as the government aims to to move towards a more sustainable energy supply.