energy sources Flashcards
what does biofuel mean?
any fuel taken from living or recently living materials such as animal waste
what does carbon neutral mean?
a biofuel from a living organism that takes in a as much carbon dioxide from the atmosphere is released hen fuel is burned
what does renewable mean?
energy from natural sources that is always being replenished so it never runs out
what is an advantage of nuclear power
it does not release greenhouse gases that warm the planet
what is a disadvantage of nuclear power
has radioactive waste that needs to be stored for many years
what type of fuel is in a nuclear power station
uranium
one disadvantage of using wave power to generate electricity
unreliable
one advantage of using renewable energy
never runs out
do not add any carbon dioxide
give definition of renewable energy
they’re always being replaced by natural processes, they are carbon free and never run out
advantage of fossil fuels
cheap and reliable and release a good deal of energy
one disadvantage of fossil fuels
release huge amounts of carbon dioxide and not renewable
problems with using solar energy
no solar energy at night and variable during the day
problem with tidal energy
height and tide varies both monthly and yearly
problems with hydroelectric energy
reservoir could run dry
explain wind energy
the wind drives turbines, this turns the generator which powers the power generated
