Flashcards

physics

katie Dack English 38 cards

Cards in this deck (38)

1name 9 types of energy.chemical, electrical, solar energy, light energy, nuclear energy, gravitational forces, kinetic energy, elastic energy and sound energy.
2what is the output of chemical energy?sound, heat, movement
3name some chemical energy.petrol, food, coal, oil, wood
4what is the useful output of kinetic energy?movement
5what are the outputs of electrical energy?movement, appliances
6where does energy go?it is traansferred into a useful or wasteful energy
7what is the output of solar energy?heat and thermal
8what is energy measured in?joules
9what is the output of nuclear energy?splitting atoms- heat and light
10name two electrodescopper & zinc
11what sort of electrolyte produce a more powerful battery?A liquid Electrolyte
12why 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.
13DRAW a Parallel circuit. (with 1 battery and 2 bulbs)
14draw a series circuit. (with 3 bulbs and 1 battery)
15would this circuit make the bulb light up?no becuse the swithch is not down
16—the voltages are all equal to each other.
= 12 volts
17what is the unit of currents?Amps
18what is the symbol for the unit of current?A
19What device can measure the flow of a current?Ammeter
20in a circuit the current is all the same.
21in a parallel circuit the current are the same parallel to each other
22how do you draw the symbol of a BUZZER?
23How do you draw the symbol of a MOTOR?
24What is powered measured in?watts
25what does DC mean?Direct current
26what does AC meanAlternating Current
27Draw a cell?
281) if you add another bulb, how bright would the bulbs appear.they would be half the brightness of the bulbs at the moment
292) if you connect another cell, how bright would the bulbs appear compared to 1they would be twice the brighter.
303) December 1 (ignore red)September 1 (ignore red)
313) 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
32Lawrence family= previous reading = 23041 current reading = 23652 Reynolds family= previous reading = 89326 current reading = 92656 which family do you think is small,explaini think the Lawrence because the figures are much more smaller than the Reynolds family.
33how does electricity get to our homes?power station - transformers - circuit breakers - high voltage cables - sub station, houses 230v
34how many volts per house?230 volts
35what is the disadvantages of a coal power station?coal power stations produce the highest amount carbon emissions into the atmosphere.
36name 3 non- renewable energyscoal, oil, gas
37what does coal, oil, and gas called collectively?fossil fuels
38label 1-41) 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