carbon cycle and energy security Flashcards
what are unconventional fossil fuel sources (uffs)
less accessible fossil fuel resources
what are the 4 types of UFFS
- fracking
- tar sands
- oil shale
- deep water oil
what is fracking
extracting natural gas from shale
high pressure fluid is pumped into rock causing it to crack, which releases a gas that’s collected
USA has 1.7mill fracking reserves
what is tar sands
a sediment that contains bitumen and is extracted by minings the sediment and then extracting the oil
it takes 2 tonnes of tar sands to make 1 barrel of oil
happens in Canada
what is oil shale
extracting oil from a rock
when the rock is placed under high pressure + heat, shale oil is released
what is deep water oil
deep ocean rigs allow for drilling to take place
happens in Brazil
what are the issues with UFFS
all have massive environmental impacts and as FF reserves deplete, these may become protected areas or exploited areas
“as fossil fuel reserves _______ the price of fossil fuels ______ “
deplete
rises
costs of UFFS
- tar sands and oil shale exploitation takes place through open-cast mining (which leads to large areas of land that’re dug up and left open) which leaves scars on the landscape and has long lasting effects to biodiversity
- deep water oil drilling increases the change of oil spillings that can impact marine life and contaminate water
- fracking can lead cause minor earthquakes and land subsidence as well as contaminates drinking water
benefits of UFFS
- can provide employment e.g. employment and transportation
- some economists argue that it makes sense to exploit FF resources while they’re still available
- companies that develop unconventional FF are in competition with conventional FF, meaning consumers can benefit from lower energy prices