Biology Spec points covered Starter Practical activity Teacher-led activity CP3a Energy P1.29 Explain, with examples, Ask students to write a Students work in pairs or small Set up a simple stores and that, where there are energy short story to illustrate groups, depending on the pendulum and start it transfers transfers in a system, there different energy stores availability of equipment, to swinging. Elicit the idea is no net change to the total and transfers. Students undertake a series of brief that the initial store of energy of a closed system can either highlight or practical investigations to gravitational potential label the different energy observe a series of energy energy from lifting the stores/transfers in their transfers from one store to bob is transferred to P1.30 Analyse the changes stories, or volunteers another kinetic energy and back involved in the way energy could be asked to read to potential energy, and Students identify the energy is stored when a system out their stories and the that air resistance (and stores and transfers involved in changes, including: class identify the stores friction in the pivot) will each demonstration they look a an object projected and transfers as the story eventually slow it to a at. upwards or up a slope is read. They could also stop. This happens as Equipment battery-powered b a moving object hitting an be asked to suggest any the moving pendulum torch (could be a circuit with obstacle transfers or stores not transfers some of its cell and lamp); electric motor mentioned in the story. kinetic energy to kinetic c an object being (could be set up to lift energy of the accelerated by a constant something); baby’s rattle; surrounding air force microwave oven; a solar cell particles. Eventually all d a vehicle slowing down (could connect to output device the energy initially like a fan, or just to a e bringing water to a boil in given to the pendulum voltmeter); a weight going over an electric kettle will be transferred by a pulley to drag a wooden block heating to the P1.31 along the desk (this could be a surroundings. Use diagrams to represent dynamics trolley); radio; energy transfers and Then drop a ball onto torch; toy on a spring that calculate the before and the bench, and let it bounces up and down; after energy values bounce until it stops. computer animation of a The energy changes nuclear reactor in operation P1.32 here are between Explain that, in all system (the computer’s energy gravitational potential
Biology Spec points covered Starter Practical activity Teacher-led activity CP3a Energy stores and transfers P1.29 P1.30 P1.31 P1.32 Explain, with examples, that, where there are energy transfers in a system, there is no net change to the total energy of a closed system Analyse the changes involved in the way energy is stored when a system changes, including: a an object projected upwards or up a slope b a moving object hitting an obstacle c an object being accelerated by a constant force d a vehicle slowing down e bringing water to a boil in an electric kettle Use diagrams to represent energy transfers and calculate the before and after energy values Explain that, in all system Ask students to write a short story to illustrate different energy stores and transfers. Students can either highlight or label the different energy stores/transfers in their stories, or volunteers could be asked to read out their stories and the class identify the stores and transfers as the story is read. They could also be asked to suggest any transfers or stores not mentioned in the story. Students work in pairs or small groups, depending on the availability of equipment, to undertake a series of brief practical investigations to observe a series of energy transfers from one store to another Students identify the energy stores and transfers involved in each demonstration they look at. Equipment battery-powered torch (could be a circuit with cell and lamp); electric motor (could be set up to lift something); baby’s rattle; microwave oven; a solar cell (could connect to output device like a fan, or just to a voltmeter); a weight going over a pulley to drag a wooden block along the desk (this could be a dynamics trolley); radio; torch; toy on a spring that bounces up and down; computer animation of a nuclear reactor in operation (the computer’s energy Set up a simple pendulum and start it swinging. Elicit the idea that the initial store of gravitational potential energy from lifting the bob is transferred to kinetic energy and back to potential energy, and that air resistance (and friction in the pivot) will eventually slow it to a stop. This happens as the moving pendulum transfers some of its kinetic energy to kinetic energy of the surrounding air particles. Eventually all the energy initially given to the pendulum will be transferred by heating to the surroundings. Then drop a ball onto the bench, and let it bounce until it stops. The energy changes here are between gravitational potential
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