ENERGY Flashcards
pros and cons of non-renewable enrgy?
:) generates a large amount of energy
:( GHGS
pros and cons of renewable enrgy?
:) does not release GHGS
:( visual pollution, weather dependent
describe the changes to the UK energy mix throughout the years
91% energy was from coal and petroleum
however, percentage of renewables start to increase
by 2020, it is targeted that 15% of energy came from renewables
3 reasons with evidence for the global varition in energy mix
- population size
china has a large population, and therefore needs a variety of energy mix
iceland has a small population, so they only use geothermal power - wealth
USA is weatlhy, so they can afford to invest in a variety of energy mix, such as renewble
Bhutan is poor, so many people use fuelwood, which is free - availability
UK can develop wind power as it is surrounded by sea
3 reasons with evidence for increasing demand and supply of energy
1 rapid population growth (5.4 BILLION INCREASE SINCE 1950)
- wealth (more people with disposable income)
- technological advances (increased electrical/ car ownerships)
Which energy resource is known for being the most abundant fossil fuel?
Coal
True or False: Wind energy generation can have a negative impact on bird populations.
True
suggest one way to meet energy demands
fracking to extract shale gas
pros of fracking
burning shale gas doesnt release ash and mecury like burning coal does
cons of fracking
shale gas has CO2 emissions equal to coal’s
it is also water intensive, decreasing the amount of water available for irrgation
different stakeholder’s vies towards sustainable use of energy resources
individual: on one hand, some people feel the responsibility to decrease carbon footprints. Yet on the other, using HEP or wind turbines can lead to noise and visual pollution, making it irritating for some
organisation: Mcdonalds replaced filament bulb with LED, improving public image. But some small businesses cannot support the increased cost of energy due to renewables
government: sustainable policies enable development in the long term
but some country’s wealth, eg saudi arabia comes from extracting oil, a non-renewable energy
2 ways UK manage energy sustainably
- ban the sale of petrol cars
-offer grants for low carbon supplies
Norway sustainablity 8 marker
- promotes renewables (8 new onshore windfarms)
- transportation (free parking spaces for electric cars)
- decrease energy loss (technology allows only 54% of oil loss furing extraction)
Bhutan sustainbilty 8 marker
- HEP plants allow 90% of electricity coverage
- decrease reliance of fuelwood as combustion of fuelwood releases CO2 (limited to collect 8m2 of fuelwood per year)
- increase energy efficiency
(sustainable rural biomass project allows stoves that burn less wood)
suggest and explain 2 ways humans exploit resources
overfishing in the North sea (bottom trawling as an example of unsustainable fishing)
deforestation in cameroon (70000 hectres of trees are cleared away for palm oil plantations, reducing biodiversity)
global patters of RESOURCE CONSUMPTION
- food (developed 2000 kcal mor than developing)
-energy (UK 32x developing)
-water (global increase due to increased living standards– 1 in 30 people in the US own a swimming pool)
