mocks revision Flashcards
(29 cards)
what is work done
energy transferred
through an object
what is the equation of work done?
force x distance
what is gravitational potential energy?
when you are above the earths surface and it is stored
what is the equation for power?
energy/time
does efficiency have a unit?
no it has a percentage
what are the benefits of fossil fuels?
cheap and easy
what are the drawbacks of fossil fuels?
pollution
what are the benefits of biofuels?
easy to use
what are the drawbacks of biofuels?
you need alot of land to grow the plants
what are the benefits of water?
it is renewable
what are the drawbacks of water?
it can flood areas
what are the benefits of the sun
it is renewable
what are the drawbacks of using the sun?
it isnt always sunny
what are the benefits of wind?
its renewable
what are the drawbacks of wind?
its not always windy and its considered an eyesore
what are the benefits of geothermal?
its renewable
what are the drawbacks of geothermal?
need to dig underground pipes
what are the benefits of hydroelectric?
it is renewable
what are the drawbacks of hydroelectric?
it damages habitats
what are the benefits of tidal?
it is renewable
what are the drawbacks tidal?
you only get energy twice per day
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