types of energy Flashcards
(32 cards)
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 steam
steam turns a turbine
turbine turns a generator which produces electricity
name three advantages of fossil fuels
reliable
easily stored
produce lots of energy
name three disadvantages of fossil fuels
burning fossil fuels causes pollution
fossil fuels WILL run out
name as many renewable sources of power as you can
wind power wave power solar power
hydro electric power tidal power geothermal power
name three advantages of renewable energy sources
they WON’T run out
the are free
they DO NOT harm the environment
name three disadvantages of renewable energy sources
the equipment is expensive
not always available
some can only be used in certain areas
what do we mean by the term Geothermal power
Geo means from the earth and thermal means heat
geothermal is heat from under the earths surface
name two advantages of Geothermal power
no pollution
no fuel needed
free energy once built
name two disadvantages of geothermal power
not available in all areas
unpredictable
ban 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 free
produces no greenhouse gases
tides are predictable
name two disadvantages of tidal power
can affect wildlife
not many suitable sites
expensive to build
what are biofuels
fuels produced from natural sources like wood and sugar cane
name two advantages of biofuels
it uses waste material
the fuel is cheap
less demand on fossil fuels
name two advantages of wind power
free once turbine is built
land beneath turbine can be farmed
NO POLLUTION
name two disadvantages of wind power
not always reliable - not always windy
turbines are expensive
wind can be too strong for the turbines
people think they spoil the view
name two disadvantages of solar power
its not always sunny ( night time)
not reliable
solar panels can be expensive
what is wind power
wind energy captured by a wind turbine and turned into electricity
