types of energy Flashcards
name the three fossil fuels
coal, oil and gas
what do we mean by the term non-renewable energy
a non-renewable energy source is one that will run out eg coal, oil and gas
what do we mean by the term ‘renewable’ resources
a renewable resource energy source is one that will NOT run out.
when and how were fossil fuels created?
they were created millions of years ago from the squashed remains of plants and animals
how do we get electricity from fossil fuels
burn them to heat up water to form steamsteam turns a turbineturbine turns a generator which produces electricity
name three advantages of fossil fuels
reliableeasily storedproduce lots of energy
name three disadvantages of fossil fuels
burning fossil fuels causes pollutionfossil fuels WILL run out
name as many renewable sources of power as you can
wind power wave power solar powerhydro electric power tidal power geothermal power
name three advantages of renewable energy sources
they WON’T run outthe are freethey DO NOT harm the environment
name three disadvantages of renewable energy sources
the equipment is expensivenot always availablesome can only be used in certain areas
what do we mean by the term Geothermal power
Geo means from the earth and thermal means heatgeothermal is heat from under the earths surface
name two advantages of Geothermal power
no pollutionno fuel neededfree energy once built
name two disadvantages of geothermal power
not available in all areasunpredictableban bring harmful gases to the earths surface
what do we mean by tidal power
energy harnessed from the incoming and outgoing tide
how does tidal power produce electricity
water flows over a turbine, the turbine turns a generator and the generator produces electricity
how do we get electricity from geothermal power
the heat in the earth boils water to make steam, the steam turns the turbine and the turbine turns a generator which produces electricity
two advantages of tidal power
once built the energy is freeproduces no greenhouse gasestides are predictable
name two disadvantages of tidal power
can affect wildlifenot many suitable sitesexpensive to build
what are biofuels
fuels produced from natural sources like wood and sugar cane
name two advantages of biofuels
it uses waste materialthe fuel is cheapless demand on fossil fuels
name two advantages of wind power
free once turbine is builtland beneath turbine can be farmedNO POLLUTION
name two disadvantages of wind power
not always reliable - not always windyturbines are expensivewind can be too strong for the turbinespeople think they spoil the view
name two disadvantages of solar power
its not always sunny ( night time)not reliablesolar panels can be expensive
what is wind power
wind energy captured by a wind turbine and turned into electricity
what do we mean by solar power
capturing energy from the sun
name two advantages of solar energy
free energy - once solar panels in placethe suns energy will not run outNO POLLUTION
name two advantages of wave power
free energy once set upnot expensive to runcan produce lots of energy
name two disadvantages of wave power
dependent on the seasome designs are noisyrough weather at sea
name two disadvantages of nuclear power
produces toxic wastewaste is expensive to dispose ofexpensive to build and maintain safety
what is wave power
wave power is captured energy from the waves
how do we get energy from nuclear power
nuclear reaction produces heatheat boils watersteam from boiling water steam turns the turbine which then turns the generator
name two disadvantages of biofuels
collecting or growing food takes timecan CAUSE POLLUTION
