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Brainlag Learn / GCSE Physics

Energy stores, transfers and efficiency

Energy stores and how energy moves between them, kinetic and potential energy, specific heat capacity, power, efficiency and the energy resources that make our electricity.

Lessons

  1. Energy stores, transfers and kinetic energyWhere energy is stored, the four ways it moves between stores, and how to calculate kinetic energy with E = ½mv². 20 min, with the Physics Formulas, free
  2. Potential energy and energy conservationGravitational potential energy E = mgh, elastic potential energy E = ½ke², and using conservation of energy for falls, swings and springs. 25 min, with the Pendulum simulation and the Mass on a spring simulation, free
  3. Specific heat capacityΔE = mcΔθ for warming things up, and the required practical that measures a specific heat capacity, from method to graph. 25 min, free
  4. PowerPower as the rate of energy transfer, P = E/t and P = W/t, with kJ, kW, MW, minutes and hours converted properly. 20 min, with the Physics Formulas, free
  5. Efficiency, wasted energy and insulationEfficiency as a decimal and a percentage, Sankey diagrams, how lubrication and insulation cut wasted energy, and the thermal insulation practical. 25 min, free
  6. Energy resourcesRenewable and non-renewable resources, how reliable they are, their effect on the environment, and reading data on how a country makes its electricity. 20 min, free

Practise and test

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