POLLUTION Flashcards
it occurs when large quantities of harmful substances that include gases particles (both organic and inorganic), and biological agents are introduced to earths atmosphere
-they call it global health hazard
air pollution
came from specific sources (car ,machines etc)
-emitted dircetly form source
primary
it form when primary pollutant reacts to the atmosphere
secondary
also known as particle solution and its not a single pollutant but rather a mixture of many chemical species
particulate matter
it is a type of particulate matter which is particles with a diameter of 10 pm or less are small enough to pass through the throat nose and lungs
-from dust in construction sites or landfills
pm10
(particles with a diameter of 2.5 Mm or less)
- can get deep into the lungs and into the blood stream
-usuallly from emissions by combustion of gasoline or diesel and fuel
pm2.5
are substances that evaporate at room temperature and are commonly found in households products and building materials
volatile organic compounds
- free radicals
- main component of smog and product of the intercation between the sulight and emissions from sources such as motor vehicles and industry-
ground level ozone
is a highly reactive gas which is emitted by motor vehicles, industrial processes, gas heaters, andgas stoves top
- it contributes to the formation of ground level ozone as well as particulate matter
nitrogen dioxide
it is odorless and colorless gas that forms from incomplete combustion of carbon in fuels
carbon monoxide
emitted from fuel fossil combustion by power
-formation of acid rain
sulfur dioxide
where ozone layer can be founded
stratosphere
it plays an important role by protecting living organism like uavs
ozone (o3)
it is a type of uv radiation which means its not a problem, it can only cause minor sunburn after a longtime of exposure
UV-A (400-351nm)
UVB is also known as mid-UV radiation. It’s responsible for most of the skin damage caused by sun exposure. UVB can cause sunburn, tanning, and thickening of the skin’s outer layer. It can also lead to melanoma and other types of skin cancer.
UV-B 9315-280 nm)
all skins produce dark colored pigment when exposed to uv radiation
melanin
ozone depletion is
safe
from fridges and aerosis are stable compounds which does not react and just passes through some gases as it goes up
chlorofluorocarbon
an act of providing a comprehensive air pollution on control policy
clean air act of 1999 ( ra no.8749)
any loud or unpleasant sound that may cause disturbances
noise pollution
-the level of sound is measured in
decibels
it is used to detect ad monitor submerged objects
sonar
it is a types of sonar that is used for testing works likes an echo repeater, where it will return an echo for received sonar
active sonar
how many db it can lead to noice induced or hearing loss
70 db
