6.6 Flashcards
1
Q
What are the alternatives to fossil fuels?
A
Renewable energy:
- solar, wind, tidal, geothermal
Nuclear power:
- recyclable energy
+ low carbon footprint
+ high efficiency
- very high cost
- dangerous
Biofuels:
+ carbon neutral
- deforestation such as palm oil plantations in Malaysia
2
Q
What are biofuels?
A
- reduces burning fossil fuels and co2 emissions
- used as vehicle fuel
- more environmentally friendly
3
Q
What are the radical technologies to reduce carbon emissions?
A
Carbon capture and storage
Hydrogen fuel cells
4
Q
What is carbon capture and storage?
A
Capturing carbon when it is released due to the burning of fossil fuels, burying it deep underground
uncertainties on if stored carbon will stay trapped underground
5
Q
What is a hydrogen fuel cell?
A
produces electricity and can be used for buildings and a power source for electric vehicles
