g19.    Where do you find air pollution?

The layer of air we are most concerned with is the troposphere because it carries our weather. Primary pollution is particles put into the air by natural events or human activities. Polluting materials include carbon oxides, nitrogen oxides, sulfur oxides, volatile organic compounds (hydrocarbons), and suspended particles. Secondary pollution is when primary pollutants react with one another to form new pollutants. Photochemical smog is a mixture of primary and secondary pollutants under the influence of sunlight. The severity and frequency is dependent on local climate, topography and society. If a layer of less dense air traps a layer of more dense air below it, a temperature inversion occurs (thermocline).  This does not allow the air to circulate and allow the smog to dissipate.

e19.    What materials can cause water pollution?

e20.    What are environmental hazards and risks?

e21.    What are chemical hazards?

m07.    Why is there stress on National Parks?

m36.    How could human health be affected by weather extremes?

m40.    What are some solutions to the problem of disappearing ozone?

m41.    How can matter affect the environment?

m42.    Are there other methods for controlling pests?

m44.    Why are there detractors of pesticides?

m46.    How do pesticides impact the environment?

m51.    Where do pollutants come from?

m52.    What causes air pollution?

m60.    What impact do tires have on the environment?

m70.    What are hazardous wastes? 

m71.    What chemicals pose a danger?