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Conceptual understanding: changing global energy needs and production techniques brings new technologies and challenges for humanity.
Conceptual understanding: changing global energy needs and production techniques brings new technologies and challenges for humanity.
Knowledge:
Knowledge:
8.1 –Energy Sources
- Specific energy and energy density of fuel sources
- Sankey diagrams
- Primary energy sources
- Electricity as a secondary and versatile form of energy
- Renewable and non-renewable energy sources
8.2 –Thermal Energy Transfer
- Conduction, convection and thermal radiation
- Black-body radiation
- Albedo and emissivity
- The solar constant
- The greenhouse effect
- Energy balance in the Earth surface–atmosphere system
Applications and skills:
Applications and skills:
8.1 –Energy Sources
- Solving specific energy and energy density problems
- Sketching and interpreting Sankey diagrams
- Describing the basic features of fossil fuel power stations, nuclear power stations, wind generators, pumped storage hydroelectric systems and solar power cells
- Solving problems relevant to energy transformations in the context of these generating systems
8.2 –Thermal Energy Transfer
- Sketching and interpreting graphs showing the variation of intensity with wavelength for bodies emitting thermal radiation at different temperatures
- Solving problems involving the Stefan–Boltzmann law and Wien’s displacement law
- Describing the effects of the Earth’s atmosphere on the mean surface temperature
- Solving problems involving albedo, emissivity, solar constant and the Earth’s average temperature
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