4784542
Description
Flashcards by katie Dack, updated more than 1 year ago
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Created by katie Dack
over 10 years ago
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| Question | Answer |
| name 9 types of energy. | chemical, electrical, solar energy, light energy, nuclear energy, gravitational forces, kinetic energy, elastic energy and sound energy. |
| what is the output of chemical energy? | sound, heat, movement |
| name some chemical energy. | petrol, food, coal, oil, wood |
| what is the useful output of kinetic energy? | movement |
| what are the outputs of electrical energy? | movement, appliances |
| where does energy go? | it is traansferred into a useful or wasteful energy |
| what is the output of solar energy? | heat and thermal |
| what is energy measured in? | joules |
| what is the output of nuclear energy? | splitting atoms- heat and light |
| name two electrodes | copper & zinc |
| what sort of electrolyte produce a more powerful battery? | A liquid Electrolyte |
| why is it not practical to use a a liquid electrolyte in all cells? | because if a very powerfull electrolyte formed in liquid with another type of powerful electrolyte it would form a POWERFUL EXPLOSION. |
| DRAW a Parallel circuit. (with 1 battery and 2 bulbs) | |
| draw a series circuit. (with 3 bulbs and 1 battery) | |
| would this circuit make the bulb light up? | no becuse the swithch is not down |
| the voltages are all equal to each other. = 12 volts | |
| what is the unit of currents? | Amps |
| what is the symbol for the unit of current? | A |
| What device can measure the flow of a current? | Ammeter |
| in a circuit the current is all the same. | |
| in a parallel circuit the current are the same parallel to each other | |
| how do you draw the symbol of a BUZZER? | |
| How do you draw the symbol of a MOTOR? | |
| What is powered measured in? | watts |
| what does DC mean? | Direct current |
| what does AC mean | Alternating Current |
| Draw a cell? | |
| 1) if you add another bulb, how bright would the bulbs appear. | they would be half the brightness of the bulbs at the moment |
| 2) if you connect another cell, how bright would the bulbs appear compared to 1 | they would be twice the brighter. |
| 3) December 1 (ignore red) | September 1 (ignore red) |
| 3) How many units has thins person used? | take away the days - 60030 - 46043 = 13987 take away the nights - 83677-32436 =51241 -daytime unit = 8 pence -night time unit= 1.5 pence multiply the day by 8 =1118.96 multiply the night by 1.5 = 768.62 |
| Lawrence family= previous reading = 23041 current reading = 23652 Reynolds family= previous reading = 89326 current reading = 92656 which family do you think is small,explain | i think the Lawrence because the figures are much more smaller than the Reynolds family. |
| how does electricity get to our homes? | power station - transformers - circuit breakers - high voltage cables - sub station, houses 230v |
| how many volts per house? | 230 volts |
| what is the disadvantages of a coal power station? | coal power stations produce the highest amount carbon emissions into the atmosphere. |
| name 3 non- renewable energys | coal, oil, gas |
| what does coal, oil, and gas called collectively? | fossil fuels |
| label 1-4 | 1) burning coal heats up in a boiler making steam 2) the steam is piped to a steam turbine 3) as the turbine spins, it turns a generator 4) the electricity produced by the generator leaves the power station on to power lines |
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