AQA Physics Combined Science Paper 1Correct 100%

an object or group of objects - ANSWERsystem _______ energy is the total kinetic energy and potential energy of all particles that make up a system - ANSWERinternal the idea that there is the same amount of energy befire and after it is transferred - ANSWERconservation of energy energy cannot be ------- -- --------- - ANSWERcreated or destroyed = 0.5 x mass x (speed)^2 - ANSWERkinetic energy type of energy stored in a stretched spring - ANSWERelastic potential energy = mass x gravitational field strenght x height - ANSWERgravitational potential energy = force x distance - ANSWERwork the rate at which energy is transferred or the rate at which work is done? - ANSWERpower what is the unit for power? - ANSWERwatt 1000,000 watts= - ANSWERmegawatt 1000 watts= - ANSWERkilowatt the amount of energy required to raise the temperature of one kilogram of the substance by one degree celsius - ANSWERspecific heat capacity how to reduce unwanted energy transfer due heat loss - ANSWERthermal insulation when a layer of gas is trapped between 2 layers of glass - ANSWERdouble glazing the higher the ------- ------------ of a material the higher the rate of energy transfer by conduction across the material - ANSWERthermal conductivity =useful energy output / total energy input - ANSWERefficiency how to reduce unwanted energy transfer due to friction of moving parts - ANSWERlubrication an energy resource that is being (or can be) replenished as it is used - ANSWERrenewable