Geography A-Level
Photo-chemical smog
What Photo-chemical smog means in Geography A-Level, as defined for AQA.
Definition of Photo-chemical smog
Check what you remember
Read the wording for your board, then hide it and explain Photo-chemical smog in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A secondary pollutant formed when sunlight reacts with vehicle exhaust emissions like nitrogen oxides.
Topics that use Photo-chemical smog
- Urban climate (AQA A-Level)
Related terms
- Congestion charging
- Modal shifts
- Particulate pollution
- Pollution reduction policies
- Transboundary nature of air pollution
- Urban canyons
- Urban heat island effect
Using Photo-chemical smog in the exam
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