energy resources Flashcards
how are energy demands met
burning gas coal and oil
what is boifuel
taken from live or recently dead oraganisms
properties of biofuel
renewable as its consantly produced and can be replaced easily as it comes from primarily vegetations or sewage
carbon neutral as the co2 made when burnt wouldve been taken in by the plant earlier
whats a neuclear fuel
fueled by uraium when its neucleas spits creating energy
explain nuclear fuel
when the neucleas splits it creates energy which is transfered by a fluid coolant to a heat exchanger and is veyr hot. the energy transferred turns water into steam which can turn electricity powered generators
what is wind power
electric generator on a tower which is turned by the wind which increases energy
cons of wind power
unreliable
noisy
what is wave power
motion from the waves moves a generator up and down and generates electricity through its movement which is trasferred to the shore by a cable
cons of wave power
small scale
not consant
lots of cables and buildings needed by the coast to connect the generators which spoils scenery
tidal flow patterns can be affected changing marine life and habitats
what is hydroelectric power
rainwater collected flows downhill and drives turbines at the bottom
what is tidal power
traps water from high tide behind a barage which is released through turbines driving generators
what are solar cells
flat pannels that turn the suns radiation energy to electricity
cons of solar pwoer
not relieable
expensive
needed in large amounts as fairly inefficient
what is a solar power toweer
tower with thousands of mirrors which reflect the suns radiation onto water at the top which turns it to steam, which is piped ti the ground and turns energy generators
what is geothermal energy
comes from radioactive substances in earth
