are in use. This should be restricted to appliances that Presenting and writing can be run from standard descriptions and laboratory power supply units. explanations: Describe and explain what is happening in terms of changes in energy stores when a motor is used to raise a load. 6.1.1.2 The amount of Calculate the kinetic Ask students to explore Planning an approach. Gravitational 2 energy associated energy of a moving questions such as: Selecting and managing potential energy: with a moving object, stored by a variables: When an object falls is the object, or stored by stretched spring and an decrease in the gravitational Determine the amount of an object can be object raised above potential energy store equal energy stored in a spring. calculated. ground level. to the increase in the kinetic Gravitational to Investigate the efficiency of an Calculations to The kinetic energy of a energy store? kinetic energy electric motor used to lift a load include kinetic moving object can be transfers: Calculate: by calculating the energy input energy, elastic calculated using the from the power of the motor x potential energy equation: Calculate the kinetic energy time. The energy stored by the and gravitational of a moving body. object can be found using: potential energy. Calculate the amount of Equations for energy stored by various kinetic energy and objects including stretched Obtaining and presenting (links to other types gravitational springs and objects raised primary evidence: Kinetic energy, EK, in of energy, potential energy above the ground. joules, J Mass, m, in Investigations looking into calculations that should be known. kilograms, kg Speed, v, Calculation of an object’s finding the speed of a trolley can be done using in metres per second, speed given the kinetic that travels down a ramp. Mini White Boards) energy of the object. m/s Calculate the g.p.e. at the top of the ramp and the kinetic
Presenting and writing descriptions and explanations: Describe and explain what is happening in terms of changes in energy stores when a motor is used to raise a load. are in use. This should be restricted to appliances that can be run from standard laboratory power supply units. 6.1.1.2 The amount of energy associated with a moving object, or stored by an object can be calculated. Calculations to include kinetic energy, elastic potential energy and gravitational potential energy. Equations for kinetic energy and gravitational potential energy should be known. Calculate the kinetic energy of a moving object, stored by a stretched spring and an object raised above ground level. The kinetic energy of a moving object can be calculated using the equation: Kinetic energy, EK, in joules, J Mass, m, in kilograms, kg Speed, v, in metres per second, m/s 2 Ask students to explore questions such as: When an object falls is the decrease in the gravitational potential energy store equal to the increase in the kinetic energy store? Calculate: Calculate the kinetic energy of a moving body. Calculate the amount of energy stored by various objects including stretched springs and objects raised above the ground. Calculation of an object’s speed given the kinetic energy of the object. Planning an approach. Selecting and managing variables: Determine the amount of energy stored in a spring. Investigate the efficiency of an electric motor used to lift a load by calculating the energy input from the power of the motor x time. The energy stored by the object can be found using: Obtaining and presenting primary evidence: Investigations looking into finding the speed of a trolley that travels down a ramp. Calculate the g.p.e. at the top of the ramp and the kinetic Gravitational potential energy: Gravitational to kinetic energy transfers: (links to other types of energy, calculations that can be done using Mini White Boards)
AQA-8464F-SOW-ENERGY.DOCX