Sustainability - Energy
No description yet. This curated deck is ready for daily study.
Card preview (10)
wind renewable energy source
location factors: - environmental impacts - how much wind is there - the rock type (geology) - local residents advantages: - pollution free/no GHGs - provides jobs in rural areas - land can be multi-purpose - can be on and off-shore disadvantages: - requires alot of land - expensive - if no wind then no energy - blades can kill bats and birds
wave renewable energy source
advantages: - renewable and clean source of energy - predictable as the weather can be forcast - reliable - no damage is done to land disadvantages: - pelamis “snake” costs over £3 million - machines may not be able to withstand storms - requires lots of maintenance due to rough salty conditions - upset marine ecosystems
tidal renewable energy source
location factors: - narrow channel of water (high speeds) - large volume of water - proximity to national grid - current water use advantages: - renewable and clean energy - there are always tides that are pedicatble and dependable (not weather dependent) disadvantages: - very expensive to start and maintain - expensive engineering due to difficult building conditions
geothermal renewable energy source
advantages: - renewable and clean energy - cheap - small area of land used - creates skilled jobs disadvantages: - location specific - requires hot rocks - gases stored underground can be released when digging - digging can sometimes trigger earthquakes
solar photovoltaic cells and solar towers renewable energy source
advantages: - renewable and clean energy - can be fitted to houses (takes up very little space) - pretty safe to use and very little maintenance required disadvantages: - areas with little solar radiation do not benefit as much from the technology - the temperature at the top of solar towers can get very hot and has been know to killing birds
biomass/biofules renewable energy source
advantages: - renewable - much fewer pollutions than fossil fuels - cheaper than fossil fuels disadvantages: - increased demand for biofuel crops causes increases in price for biofules and food - requires water to irrigate crops putting more strain on water supplies - fertilisers used to grow the crops have a negative impact on the surrounding environment - huge areas of land are needed to grow the crops reducing land for food farming and natural habitats
hydro-electric renewable energy source
location factors: - steep sided valley - high precipitation - impermeable geology - proximity to national grid advantages: - renewable - little ditruption to locals - low running costs - resevoirs can be used for irrigation, leisure, water supplies - tourist attractions disadvantages: - difficulty getting materials to remote areas - very expensive to build - large areas need to be flooded for the resevoir - affects migrating fish
coal oil and natural gas non-renewable energy source
advantages: - cheap and reliable - lots of uses for oil via fractional distillation disadvantages: - supplies are limited and will run out very soon - pollution has many environmental issues
nuclear non-renewable energy source
advantages: - large amount of energy with no CO2 produced - cost effective disadvantages: - waste products are radioactive - threat to human health if radiation leak - expensive to build
impacts of increasing global population on energy supplies social, economical, and environmental
social: - EMDCs use increasing quantities of energy due to advancing technology - renewables create skilled jobs - ELDCs will continue to use non-renewable sources of energy due to a lack of money and technology economical: - countries invest in more renewables - governments spend money on educating new technologies by bringing in specialists - increased cost of living environmental: - great demand for energy increased quantity of fossil fuels burned which expells GHGs into atmosphere - great demand for renewables requires metals and other resources which are polluting during extraction and processing