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MODULE 2 - GENERATING ELECTRICITY - Coggle Diagram
MODULE 2 -
GENERATING ELECTRICITY
METHODS OF PRODUCING ELECTRICITY
(page 48)
WATER
watermills
dams
waves, tides
WIND
windmills
STEAM
source of energy since the Industrial Revolution
it can be created in 5 different ways
Solar furnaces
Biomass
Nuclear fission
Geothermal energy
Fossil fuels
FOSSIL FUEL POWER STATION
(page 51)
FOSSIL FUELS
= remains of plants and animals died millions of years ago
buried underground or under the sea
extracted through mining or drilling
Coal, oil or natural gas are used to produce electricity
NUCLEAR POWER STATION
(page 52)
An enormous amount of heat can be created from a small amount of fuel (uranium dioxide)
HYDROELECTRIC POWER
(page 54)
Hydropower plants convert the energy of descending water into electricity. The amount of electricity generated depends on the volume of water flow and the heights it descends.
WIND POWER
(page 55)
Computers are used to design blades and to understand where to position them to catch wind pressure more efficiently; they can also study weather predictions to maximise the management of the wind energy
PROs
clean
free
sustainable source
CONs
noise pollution
visual pollution
SOLAR POWER
(page 56)
SOLAR FURNACE
(
indirect way
of producing electricity from the sun)
SOLAR CELL
(
direct way
of producing electricity from the sun)
GEOTHERMAL, BIOMASS & BIOFUELS
(page 57)
BIOMASS
energy that comes from decomposing organic materials and waste (plants, wood, manure, household rubbish)
they are burned in incinerators to produce steam to turn the turbines
some decomposing materials can produce methane gas which can be collected and burned as fuel
WASTE-TO-ENERGY PLANTS
GEOTHERMAL
underground rocks heated naturally by the Earth are used to generate electricity
it's not a completely renewable form of electricity because hot rocks can cool down over time
'Hotspots' are accessible only in a limited number of places (Iceland, Japan, New Zealand, California)
BIOFUELS
some crops are specially grown to be converted into products like bioethanol and biodiesel, used for generating electricity, heating systems of for cars
Brazil and the USA are the major producers
