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Effects of Use and Disposal of Pure Substances and Mixtures on the Environment - Section 9.3 Quiz
When you have completed the quiz, your score will appear here--->
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Which choice is not a level of treatment of waste water?
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Physical
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Biological
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Mechanical
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Chemical
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What is the first stage of treatment that waste water goes through?
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Primary settling tank
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Tertiary lagoon
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Primary grit chamber
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Secondary advanced sludge
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What is primarily removed during secondary treatment of waste water?
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Bacteria and protozoa
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Rocks, sand and grit
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Phosphates
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Suspended solids
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Which type of chemical is not normally used in farming?
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Bactericide
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Pesticide
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Insecticide
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Herbicide
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Why are women of childbearing age and children under 15 told to restrict their consumption of sport fish caught in Ontario waters?
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The fish are contaminated with pesticide residues
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The fish have abnormal hormone levels due to human waste
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The fish are toxic because of algae blooms caused by phosphates
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The fish are genetically altered because of acid rain
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Which material does not pose any particular hazard when it is placed in a landfill?
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Plastic milk bottle
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Half a can of dried oil-based paint
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Fluorescent light bulb
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Rechargeable battery
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Which statement about uranium use in nuclear energy production is false?
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Uranium slowly breaks down in sunlight until it is no longer hazardous
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To be used as a fuel source, uranium must first be enriched
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Uranium is dangerous because it is radioactive
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Spent nuclear fuel can be hazardous for as long as 10,000 years
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What is the first stage of treatment of spent uranium fuel?
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Storage in a large pool of water
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It is spread in a thin layer to dry
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Transportation to a reprocessing site
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Storage deep underground in steel and concrete
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What is sludge?
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Residual semi-solid material left over from waste water treatment
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The liquid waste water from toilets, baths, showers and sinks
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A mixture of waste rock that is a byproduct of nickel and copper smelting
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Toxic waste that is left in a large pool until it is no longer hazardous
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Which choice below is not a way in which pesticides enter the water supply?
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Precipitation
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Leaching
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Percolation
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Run off