chapter 6 Flashcards
1
Q
human influences on the atmosphere
A
- changing the atmopsheric composition of gasses
- burning fossil fuels
- deforestation
- intensive cattle farming
2
Q
The role of clouds
A
albedo effected, defined by form, shape and height
3
Q
Enhanced vs natural greenhouse effect
A
More re-emitted heat
Less heat escape
More greenhouse gasses
4
Q
Impacts of UV radiation
A
- Sunburn causing premature ageing and risk of cancer
- Cataracts
- immunosuppression
- crop damage as damages photosynthetic organisms
5
Q
ODS - Ozone depleting substances
A
- Disrupt equilibrium
- Halogenate organic gasses
- Hole the ozone layer
6
Q
Montreal protocol
A
- UNEP
- Management of ODS
- Ratified by 197 countries
- Fall to 45,000 tonnes from 1.8 million
- London amendment phasing them out by 2000
- Assisting development
6
Q
Challenges of ODSs
A
Long life span
Replacement of chemicals
Illegal trade
6
Q
Photochemical smog
A
- Mix of primary and secondary pollutants
6
Q
Factors affecting photochemical smog
A
topography
climate
population density
fossil fuel use
7
Q
Management strategies of photochemical smog
A
Altering human behaviour
- policies
- energy efficient devises
legislation and release
- emission standards
clean up and restoration
- scrubbers to filter emissions
- reforestation
8
Q
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8
Q
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