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P3: sustainable energy
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Mind Map on P3: sustainable energy, created by beck27398 on 05/21/2013.
Mind Map by
beck27398
, updated more than 1 year ago
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beck27398
over 11 years ago
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Resource summary
P3: sustainable energy
ELECTRICAL ENERGY
power
is the rate of energy transferred
power is measured in:watts, W, killowatts,KW
energy transferred = power X time
kilowatts
energy is meausred in in joules
kwh
energy transferred = power X time
the formular for electricalpower is: power(in W) = voltage(in V) Xcurrent (in A)
SAVING ENERGY
at home
double glasin windows
wall cavity
loft insulation
draught-proofing
thick curtains
at work
no printing
less photocopying
turn off the moniters when not being used
getting around
cycal to near by place
walking
public transport
car-share
POWERSTATIONS
uses secondary energy
1: energy is released from FULE (by burning in a boiler) and used to generate STEAM
2: the STEAM turns a TURBINE
3: a GENERATOR converts the movement of the turbine ( KINETIC ENERGY) in to ELECTRICITY
NUCLEAR ENERGY
is powered by...
it produces radioactive waste
ADVANTAGES
releases a lot of energy
don't produce CO2
it is cheap
DISADVANTAGES
produces radioactive waste
can put humans at risk
hard to dispose of
IRRADIATION
when you are near to radiation it is harmful but when you move a way you are not at risk
CONTAMINATION
when you are exposed to radiation you are effected by it even if you move away you are still effect you cant get rid of it
wind energy
DISADVANTAGES
it is very loud/noisy
its cots alot
the power stops when the wind stops
ADVANTAGES
no pollution
it has a generator in side so the energy comes straight from the world
WAVE AND TIDAL ENERGY
the waves power the turbines
no pollution
when there is no wind there is waves so there will be no energy being transferred
it coast a lot
they are pretty reliable
biofuels
made of plant and waste
they are renewable energy recourses
used to generate electricity in THERMAL POWER STATIONS
they are a solid, liquid and gas
GEOTHERMAL
only possible where HOT ROCKS are
used to drive THERMAL POWER STATIONS
free and renewable
is coast a lot to drill down
hydroelectricity
uses dams to catch rain
rain water is caught in dams and allowed through turbines
the turbines drive the generators
have a big impact on the eviroment
damage to venation and animals habitats
rotting vegetation releases METHANE and CO2
1: water is stored in reservoir above the turbines using a dam
2: GRAVITY causes the water to rush through the turbines
3: a generator converts the movement of the turbines (KINETIC ENERGY) in to electricity
generators and national grid
electromagnetic induction
1: you can create a VOLTAGE ad a CURRENT in a conductor by MOVING A MAGNET in or near a COIL WIRE
the NATIONAL GRID is the NETWORK of pylons and cables that covers the whole of britain
you need either HIGH VOLTAGE or HIGH CURRENT to transmit a large amount of power
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