Noise pollution & Greenhouse gases Flashcards
Noise Pollution
Sound at levels high enough to cause psychological stress and hearing loss
Sources Transportation, construction, domestic & industrial activities
Effects
Noise Pollution
Heart attacks ( many deaths)
Decrease sleep
Anxiety
Hearing loss or impairments
Soical changes
*Stress/anxiety related health issues
Masking of sounds used to hunt, mate, or communicate
Damaged hearing
Changes to migratory routes
*
Itlaize Means animalrs while regular is humans
Noise Pollutions acts
Office of Noise Abatement & Control - part of the Clean Air Act by the EPA in 70s
**Noise Control Act of 1972
Noise Pollution Clearinghouse ** - project for community noise control
Light pollution
Excessive, misdirected, or misused light energy that can harm human health, wildlife, ecosystems, & astronomy.
Sources Building interior or exterior lights, advertising, cars, entertainment venues
Effects
Light polluion
- Light trespass- light where it is not wanted
- Confuse nocturnal animals or migrating birds
- Spoil natural landscapes
- Decrease visibility of astronomical objects
- excess heat in ar which connects to climate change
Humans effects
Light polluion
Sleep disorders
Depression
Diabetes
Thermal Pollution
Heat released into the environment causes variation to normal water temperatures
- Hanges to dissolved oxygen concentrations because warm water does not contain as much oxygen as cold water
Greenhouse Effect
Heat is trapped and reradiation either into space or back to Earth
Greenhouse Effect
30% absorbed, scattered, or reflected (clouds & atmosphere)
70% reaches Earth surface
10% reflected
90% absorbed
Primary Greenhouse Gases
Carbon Dioxide (CO2)
Methane (CH4)
Water Vapor
Nitrous Oxide (N2O)
Chlorofluorocarbons (CFCs)
Residence Times
While water vapor is the main natural GHG, it does not contribute significantly to climate change because of its short residence time.
Longest Residence Times
Longest residence times:
SF6
CO2
N2O
Some CFCs
Some HFCs
Methane
GWP
Global Warming Potential
The ability of a gaseous compound to trap extra heat in the atmosphere over time
GHG wth GWP that contriubte to global climate: CFCs, N2O, CH4, CO2
Highest Greenhouse Gas Emission
Power stations
Industrials processes
Transportation fuels
Highesy Emission by country
1) China
2) Us
3) India
4) Russia
5) Japan
