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7.1 Energy choices and security - Coggle Diagram
7.1 Energy choices and security
Energy security
ability to secure affordable, reliable, and sufficient energy supplies for the needs of a particular country
Factors for energy choices
Politics
Economics
Technological developments
Cultural attitudes
Availability of supply
Sustainability
Environmental considerations
Fossil fuels
Advantages
safe extraction
technology already exists for their use
plentiful
technology for controlling pollution exists
relatively cheap
oil and gas can be transported over long distances by pipelines
Disadvantages
become increasingly difficult to extract
extraction may become more dangerous
unsustainable
clears habitat
causes environmental damage
oil spills and burst pipelines cause damage that is expensive to clear up
contribute to climate change
Renewable sources
Disadvantages
Technologies to harness renewable sources are not available on a large scale
Inertia within cultures
Fossil fuels are still economically cheaper to exploit
Location are limited by politics
Types
Wind power
Biofuel
Solar energy
Waste
Tidal power
Geothermal energy
Hydroelectric power
Advantages
Do not release pollutants
Will not run out
Non-renewable sources
Types
Oil
Natural gas
Coal
Nuclear fission
Advantages
Readily available technology
Large amount of electrical energy is generated
Does not emit CO2 so does not contribute to global warming
Very efficient
Disadvantage
High associated risks
Energy source - uranium - is scarce and non-renewable
Dangerous waste
Takes time to build a plant