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what is the result of harmful substances built up in the air to unhealthy levels? air pollution
a primary pollutant is put directly into the air by what? human activity
buildings that have very poor air quality have what condition? sick-building syndrome
the intensity of sound is measured in what? decibals [dB]
how do you measure how acidic or basic a substance is? power of hydrogen [pH]
an increase in the concentration of acid is called what? acidification
the sudden influx of acidic water that causes a rapid change in the water's pH is called what? acid shock
what is it called when air pollution hangs over urban areas and reduces visibility? smog
in what atmospheric condition does warm air trap cooler air near the earth's surface? temperature inversion
what minerals form in long, thin fibers and are valued for their strength and resistance to heat? asbestos
what machine sprays gases with water to remove pollutants? scrubber
what vehicles have no tailpipe emissions, no emissions from gasoline, and no emission-control systems that deteriorate over time? zero-emission
secondary pollutants form when what comes into contact with primary pollutants? primary pollutants
what organic chemicals vaporize readily and form toxic fumes? VOCs
this type of pollution does not present a direct hazard to human health but negatively affects our environment? light
Created by: monishua