AC9S9U05
Physical sciences
apply the law of conservation of energy to analyse system efficiency in terms of energy inputs, outputs, transfers and transformations
Elaborations
- AC9S9U05_E1explaining that the law of conservation of energy explains that total energy is maintained in energy transfer and transformation in a system
- AC9S9U05_E2explaining efficiency and recognising that in energy transfer and transformation a variety of processes can occur, so that the amount of usable energy is reduced and the system is not 100% efficient
- AC9S9U05_E3using and critiquing representations such as Sankey diagrams to show energy inputs, changes and outputs in a system
- AC9S9U05_E4investigating the efficiency of ground ovens used by First Nations Australians
- AC9S9U05_E5comparing the efficiency of electricity generation from coal and other sources such as nuclear, hydroelectricity, gas, solar and wind
- AC9S9U05_E6examining the meaning of energy star ratings given to appliances such as refrigerators and washing machines and criteria used to determine these ratings
- AC9S9U05_E7examining how improving efficiency in energy transfer and transformations in sporting activities such as pole vaulting or archery improves athletic performance
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