Energy - Physics Trilogy Checklist
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AQA TRILOGY Physics: Energy
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TopicStudent Checklist
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6.1.1 Energy changes in a system, and the ways energy is stored before and after such changes Define a system as an object or group of objects and state examples of changes in the way energy is stored in a system
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Describe how all the energy changes involved in an energy transfer and calculate relative changes in energy when the heat, work done or flow of charge in a system changes
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Use calculations to show on a common scale how energy in a system is redistributed
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Calculate the kinetic energy of an object by recalling and applying the equation: [ Ek = ½mv2 ]
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Calculate the amount of elastic potential energy stored in a stretched spring by applying, but not recalling, the equation: [ Ee= ½ke2 ]
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Calculate the amount of gravitational potential energy gained by an object raised above ground level by recalling and applying, the equation: [ Ee = mgh ]
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Calculate the amount of energy stored in or released from a system as its temperature changes by applying, but not recalling, the equation: [ ΔE = mcΔθ ]
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Define the term 'specific heat capacity'
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Required practical 14: investigation to determine the specific heat capacity of one or more materials.
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Define power as the rate at which energy is transferred or the rate at which work is done and the watt as an energy transfer of 1 joule per second
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Calculate power by recalling and applying the equations: [ P = E/t & P = W/t ]
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Explain, using examples, how two systems transferring the same amount of energy can differ in power output due to the time taken
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6.1.2 Conservation and dissipation of energy State that energy can be transferred usefully, stored or dissipated, but cannot be created or destroyed and so the total energy in a system does not change
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Explain that only some of the energy in a system is usefully transferred, with the rest ‘wasted’, giving examples of how this wasted energy can be reduced
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Explain ways of reducing unwanted energy transfers and the relationship between thermal conductivity and energy transferred
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Describe how the rate of cooling of a building is affected by the thickness and thermal conductivity of its walls
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Calculate efficiency by recalling and applying the equation: [ efficiency = useful power output / total power input ]
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HT ONLY: Suggest and explain ways to increase the efficiency of an intended energy transfer
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6.1.3 National and global energy resources List the main renewable and non-renewable energy resources and define what a renewable energy resource is
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Compare ways that different energy resources are used, including uses in transport, electricity generation and heating
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Explain why some energy resources are more reliable than others, explaining patterns and trends in their use
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Evaluate the use of different energy resources, taking into account any ethical and environmental issues which may arise
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Justify the use of energy resources, with reference to both environmental issues and the limitations imposed by political, social, ethical or economic considerations
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