Physics IGCSE - Energy Resources and Energy Transfer Flashcards
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| 16291511901 | Energy Stores | - Kinetic - Thermal - Chemical - Gravitational Potential - Elastic Potential - Electrostatic - Magnetic - Nuclear | 0 | |
| 16291511902 | Energy Transfers | - Mechanically (force acting on it) - Electrically (A charge moving through a p.d.) - By Heating - By Radiation (light/sound waves) | 1 | |
| 16291511903 | Principle of Conservation of Energy | Energy can never be created or destroyed | 2 | |
| 16291511904 | Law of Conservation of energy | Total energy input = useful energy output + wasted energy | 3 | |
| 16291511905 | Efficiency of Energy formula | - Efficiency = (useful energy output / total energy input) x 100% |  | 4 |
| 16291511906 | Thermal energy transfer | - Radiation (infrared) - Conduction (solids) - Convection (liquids and gasses) | 5 | |
| 16291511907 | Thermal radiation | - Infrared Radiation | 6 | |
| 16291511908 | Conduction | - Vibrating particles transfer kinetic energy to neighbouring particles | 7 | |
| 16291511909 | Convection | - Liquid and Gases only - All about change in density | 8 | |
| 16291511911 | Slow thermal transfer | - reduce Conduction - stop Convection Insulation traps pockets of air - reduce Radiation = Poor emitter (shiny and white) | 9 | |
| 16291511912 | Work | energy transferred due to a force | 10 | |
| 16291511913 | Work Done formula | - Work Done = Force x Distance moved (in direction of force) - W = F x d |  | 11 |
| 16291511914 | Power defintion | - The rate at which energy is tranferred - 1 W = 1 J of energy per second | 12 | |
| 16291511915 | Power formula | - Power = Work done / Time taken - P = E / t |  | 13 |
| 16291511916 | Kinetic Energy formula | - Kinetic Energy = 1/2 x mass x ( speed ) ² - KE = 1/2 x m x v² |  | 14 |
| 16291511917 | Gravitational Potential formula | - Gravitational Potential Energy = mass x gravitational field strength x height - GPE = m x g x h |  | 15 |
| 16291511918 | GPE of an object | is ALL transferred to Kinetic Energy (if no air resistance) | 16 |