Exam 3 Review

the layer of gases that envelop earth

the bottom layer, where we reside - temps decrease with increasing altitude

this layer contains most of the ozone layer

which ozone shields humans from UV radiation

which type of ozone is the most abundant in photochemical smog and is harmful to humans

when cool air gets trapped below warm air

what happens to vertical air mixing when impacted by a temperature inversion?

these pollutants are released directly from a source

ash from a volcano, SO2 from a power plant, and CO from car exhaust are all types of

these pollutants are formed from chemical reactions in the atmosphere

ozone and smog are both types of

the longer the residence time, the _____ the effect over a longer period

• funds pollution control research and sets air quality & emissions standards • requires states to monitor air quality • air quality is the US has improved as a result

t or f: developing nations that are industrializing still have severe air pollution

t or f: developing nations rely on cheaper, outdated tech in power plants

t or f: india does not contain 42 out of 50 of the most polluted cities on earth

this type of smog is driven by sunlight driving chemical reactions between primary pollutants

• a mixture of > 100 secondary pollutants • contains large amounts of ground level ozone, which is harmful to humans • NO2 gives this smog a brownish hazy color

this type of smog consists of CO2, CO, Mercury, and Sulfur as they are emitted by fossil-fuel burning power plants

• sulfur reacts with O2 and H2O to form sulfuric acid in the atmosphere • many cities suffer from the effects of this type of smog

how do halocarbons, such as CFCs, effect stratospheric ozone?

t or f: CFCs have a long residence time but are no longer used as often

these can be found in refrigerators, aerosol spray cans, and air conditioners

what impact does the ozone hole have on organisms?