6.6

Question 1

What are the alternatives to fossil fuels?

Answer 1

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

Question 2

What are biofuels?

Answer 2

• reduces burning fossil fuels and co2 emissions
• used as vehicle fuel
• more environmentally friendly

Question 3

What are the radical technologies to reduce carbon emissions?

Answer 3

Carbon capture and storage
Hydrogen fuel cells

Question 4

What is carbon capture and storage?

Answer 4

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

Question 5

What is a hydrogen fuel cell?

Answer 5

produces electricity and can be used for buildings and a power source for electric vehicles

Question 6

What are types of recyclable energy?

Answer 6

Nuclear
- Nuclear waste can be reused
But
- risk of safety
- disposal is long
- technology is complex
- cost of construction of power plants are high

Question 7

What countries use biofuels?

Answer 7

UK and Brazil
Brazil:
- Diversified and improved energy mix
- helped reduce carbon emissions
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