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Question | Answer |
---|---|
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 |