Environmental problems of burning fuels

Question 1

what does burning fuels release?

Answer 1

• gases

- particulates

Question 2

what happens in combustion?

Answer 2

carbon & hydrogen is oxidised so the carbon dioxide and water vapour is released in the atmosphere. energy is also produced

Question 3

what is complete combustion?

Answer 3

when there enough oxygen for all fuels to burn

Question 4

what does sulfur dioxide cause?

Answer 4

acid rain

Question 5

how is acid rain caused?

Answer 5

sulfur dioxide mixes with clouds➡️forms a diluted sulfuric acid➡️falls as acid rain

Question 6

what happens to areas when acid rain falls?

Answer 6

• kills trees
• makes lakes acidic
• plants and animals die
• damages limestone buildings

Question 7

how do you reduce acid rain?

Answer 7

by reducing sulfur emissions

Question 8

increasing carbon dioxide causes…?

Answer 8

climate change

Question 9

why is carbon dioxide increasing in our atmosphere?

Answer 9

because we are burning large amounts of fossil fuels

Question 10

what causes global dimming?

Answer 10

particles

Question 11

name 3 alternative fuels with its pros & cons

Answer 11

ethanol
✔️carbon neutral
❌engine shave to change to work entahnol

biodiesel
✔️carbon neutral
❌expensive to make

hydrogen gas
✔️clean
❌expensive