P6.1 Energy Revision Cards 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: lottiehatherellCreated on: 13-10-18 17:52 What are the 5 main energy stores? Chemical, Thermal, Kinetic, Gravitational Potential and Elastic Potential 1 of 11 What is meant by conservation of energy? No energy is lost or gained. No energy can be created or destroyed. 2 of 11 How is power calculated? power (w) = work done/ time 3 of 11 How is Gravitational Potential energy calculated? GPE = mass (kg) x gravitational field strength ( n / kg) x height (m) 4 of 11 How is kinetic energy calculated? Ek = 0.5 x mass (kg) X speed (m/s) *squared* 5 of 11 What is the unit for energy? Joules (J) 6 of 11 What is the difference between a non-renewable and renewable energy resource? Renewable resources will not run out whereas non-renewable resources will. 7 of 11 What makes an energy resource reliable? The ability for an energy resource to provide constant and expected levels of energy 8 of 11 What is produced by coal, oil and gas power stations? They generate electricity (whilst also producing CO2 emissions and lots of pollution). 9 of 11 How is efficiency calculated? efficiency = useful power output / total power output 10 of 11 If a material has a higher thermal conductivity what does this mean? 1. It can conduct heat easily and quickly. 2. It is dense which makes it easier for the heat to conduct through it. 11 of 11
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