GCSE OCR Physics: P8.2 Powering Earth

All resources for P8.2 Powering Earth GCSE OCR Physics Gateway 9-1. Triple and combined (Higher and Foundation) is covered in this material.

• Types of different energy sources
• Renewable and non-renewable definitions
• Different uses of energy sources - transport, heating, and generating electricity
• Advantages and disadvantages of different energy sources
• Fossil fuels – oil, coal, and natural gas.
• Nuclear fuel – Uranium
• Biofuels – wood, biodiesel, and biogas.
• The sun - solar (PV) panels and solar heating panels
• Tides
• Waves
• Hydroelectricity
• Wind
• Geothermal
• How use of energy resources have changed over time. (Biofuels, Fossil Fuels, Nuclear, Renewable).
• How energy use has increased (increase population and development of technology)
• Explain patterns and trends in the use of energy resources.
• Fossil fuels are finite and will run out at current consumption levels.
• Structure of the National Grid
• Step-up and Step-down transformers
• How transformers increase the efficiency of the National Grid
• Number of turns and potential difference
• Current and potential difference in primary and secondary coils
• • Domestic Electrical Supply being 230 V, AC at 50 Hz.
• Direct potential difference and alternating potential difference.
• Reasons for insulation on wires.
• Potential Difference between different conductors.
• Function of the earth conductor.
• Double insulation and no earth wire.
• Reasons the live wire is dangerous.
• Reasons why live to earth is dangerous.