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P3.1 - Coggle Diagram
P3.1
hydro electric energy
running water
water flow has kinetic energy
in a dam
water is let through some turbines
this spins a coil in a generator
mostly done in mountainous or in rivers
'pumped storage'
sometimes they pump the water into the dam before letting it out again
because gravity makes the water want to go down any way
advantages
renewable
no pollution
water is storred
disadvantages
costs a lot to build a dam
a dam can ruin local environment
tidal energy
tides
high tide = lots of gravitational potential energy
GPE can generate electrical energy
advantages
renewable
no pollution
reliable
cheap to run
disadvantages
expensive to build an arm
possible flooding
wave energy
sea waves
turns the kinetic energy from the waves into electrical energy
bouy bobs up and down
this pulls a piston up and down
which tuns a turbine
which turns a coil in a generator
disadvantages
needs lots of machines
costs alot
are ugly
advantages
renewable
no pollution
nuclear power
nuclear reactions
nuclear fuel takes energy from atoms
the nucleus of teh elements is unstable + splits apart releasing energy
the energy istransferred to a fluid called couian c turns water into steam
steam drives turbines
advantages
no green house gas
a lot of energy
disadvantages
waste needs to be stored for years
non-renewable
possible explosion
fossil fuels
fossils
examples are oil, coal natural gas
burning fossil fuels producees CO2 which is linked to global worming
they are reliable but will run out
advantages
reliable
disadvantages
non-renewable
produces carbon dioxide
burning can produce sulfur dioxide
can cause acid ran
solar energy
the sun
the sun's heat and light energy are either
turned into electical energy by solar cells
used to heat water for homes using solar panels
advantages
renewable
no pollution nothing gets burned
disadvantages
solar cells + solar panels are expensive
only works if it is sunny
biomass
advantages
renewable
no special equipment
doesn't add to greenhouse gas
trees
trees absorb sun energy
changes to chemical energy and dtores it inside
we burn the wood turn the enrergy into heat we use for cooking and heating
disadvantages
large areas of land are needed to grow trees
geothermal
earth
turns the thermal energy from not rocks into electrical energy
advantages
renewable
no pollution
doesn't damage the environment
disadvantages
not many places to use
costs lots
wind energy
wind turbine
the wind turbines turn the kinetic energy
advantages
no pollution
disadvantages
turbines are ugly
turbines are noisy