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Geothermal energy - Coggle Diagram
Geothermal energy
ICELAND
SOURCE OF MAGMA
HEATS UNDERGROUND WATER
PLATES SEPERATE
CONSTRUCTIVE BOUNDARY
TO TEMPATURES ABOVE 200 DEGREES
CREATING ENERGY
piped to one of Iceland’s 5 geothermal power plants
water and steam is extracted
Wells drilled up to 3km deep
water and steam are separated.
ADVANTAGES
renewable clean energy
reduces dependence on fossil fuels
CHEAP ELECTRICITY
0.05 cent per kw(27 cent ire)
SOURCE
TRAPPED UNDERGROUND
IMPERMEABLE ROCKS
RAINWATER
DOESNT EVAPORATE/PRESSURE OF OVERLYING ROCKS
TERTIARY
blue lagoon spa
high mineral content+ healing properties
TOURISM
1.8 million visitors
USE OF ENERGY
Steam is used to generate electricity
water is piped to nearby urban areas
hot water and heating for 80% of homes
Secondary activities benefit e.g aluminium smelters LOWER COSTS
Primary activities benefit It is used to create heat for greenhouses to grow vegetables