Urban air quality:

Question 1

What are particulates ?

Answer 1

Tiny pieces of solids and tiny droplets of liquid floating in the air

Found from:
Vehicle exhausts
Burning/fuel
Mining

Question 2

Photochemical smog:

Answer 2

When pollutants come in contact with sunlight, they break down into harmful chemicals which form photochemical smog

Photochemical smog is linked to health problems and respiratory disease.

Question 3

Ways of tackling air pollution on a local scale:

Answer 3

1) Congestion charging
2) Pedestrianisation
3) Public transport improvements

Question 4

Ways of tackling air pollution on a larger scale:

Answer 4

1) Laws: Uk clean air act of 1956 and 1968 introduced smoke control areas where only smokeless fuels could be burned.

2) Alternative fuels: e.g biofuels from plants, has lower emissions and electronic vehicles