Topic Energy - Physics 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: gg1903Created on: 25-02-19 18:52 What is stored Energy? Stored Energy is Energy that isn't doing anything, it is waiting to happen, can be turned into other forms of Energy 1 of 14 Name the three types of stored Energy? Gravitational Energy, Elastic Potential Energy and Chemical Energy 2 of 14 What is the Principle of the Conservation of Energy? Energy can never be created nor destroyed - it's only ever transferred from one form to another 3 of 14 The total energy output is ALWAYS the same as the ... Energy input, however, only some of the output Energy is useful 4 of 14 What is input Energy often lost or wasted as? Heat Energy 5 of 14 What does the Efficiency of a device tell you? It tells you the Proportion of the Energy input that is transferred into useful Energy 6 of 14 How do you work out Efficiency? Efficiency = Useful Energy OUTPUT / Total Energy INPUT x 100 7 of 14 All objects are continually emitting and absorbing what? Heat Radiation 8 of 14 An object that is hotter than it surroundings emits more Radiation that it ... Absorbs (as it cools down) 9 of 14 An object that is cooler than its surroundings absorbs more Radiation than it ... Emits ( as it warms up ) 10 of 14 Power is the same rate as ... Energy Change ( Energy / Time ) 11 of 14 For an object to stay at the SAME Temperature, the Power of the heat absorbed needs to be ... The same as the Power emitted 12 of 14 Dark Matt surfaces absorb and emit heat Radiation better than ... Bright glossy surfaces 13 of 14 Silvered surfaces REFLECT ... All heat Radiation falling onto them 14 of 14
Comments
No comments have yet been made