Costs and benefits Flashcards
(10 cards)
1
Q
Biofuels - costs
A
- have to be managed sustainably to make sure they don’t run out
- reduces the amount of food crops able to grow
- lots of water needed
- leads to deforestation
2
Q
Biofuels - benefits
A
- less pollution than fossil fuels when burned
- some are made from waste products which reduces total amount of waste produced
3
Q
Wind Energy - costs
A
- wind is unpredictable so electricity varies
- can cause environmental issues - kill birds in turbine
- lots of space needed
- noise pollution for locals
4
Q
Wind Energy - benefits
A
- do not release greenhouse gas emissions after constructed
- cheap
5
Q
Solar Energy - costs
A
- sunny climates needed
- toxic metals like mercury are used in constructing solar panels
- can affect habitats and ecosystems by being built on the ground
6
Q
Solar Energy - benefits
A
- one made and fitted there is no emissions produced
- don’t require much maintenance once installed
- technology is widely available
7
Q
HEP - costs
A
- expensive to build
- requires lots of land and water
- can cause environmental issues like flooding
8
Q
HEP - benefits
A
- no emissions produced
- flow of water through turbines is controlled so supply of energy is reliable
9
Q
Hydrogen fuel - costs
A
- energy required to extract to from water (energy comes from burning fossil fuels which releases GHGs)
- technology is expensive and not widely available
- storing hydrogen is dangerous - flammable
10
Q
Hydrogen fuel - benefits
A
- burning hydrogen doesn’t release harmful emissions
- hydrogen extracted from water - not limited
