Environmental Health: Local To Global: Module 4 Quiz

Question 1

  1. A combined sewer overflow is designed to handle __________.
[removed]both the water flushed down toilets and other household wastewater
[removed]the overflow of pretreated industrial wastes
[removed]peaks in wastewater flow caused by surface runoff

1 points  

Question 2

  1. A septic system consists of a septic tank and a __________.
[removed]leach field
[removed]sludge digester
[removed]trickling filter

1 points  

Question 3

  1. Secondary sewage treatment is fundamentally a _______________ process.
[removed]biological
[removed]chemical
[removed]mechanical
[removed]

1 points  

Question 4

  1. About __________ of treated sewage sludge in the United States is disposed of by spreading it on land.
[removed]25 percent
[removed]50 percent
[removed]75 percent

1 points  

Question 5

  1. Potable water is water that is __________.
[removed]available for human use within a given watershed
[removed]considered suitable for use as drinking water
[removed]derived from a sustainable source

1 points  

Question 6

  1. Primary sewage treatment is fundamentally a _______________ process.
[removed]biological
[removed]chemical
[removed]mechanical

1 points  

Question 7

  1. Metals present in municipal wastewater may still be present in treated sewage sludge; __________.
[removed]dioxins may also be present in treated sludge, but pathogens will not be present
[removed]pathogens may also be present in treated sludge, but dioxins will not be present
[removed]both pathogens and dioxins may also be present in treated sludge

1 points  

Question 8

  1. Currently, most human exposure to polychlorinated biphenyls (PCBs) in the environment is through _______________.
[removed]ingestion of food
[removed]inhalation of indoor air
[removed]intravenous drips

1 points  

Question 9

  1. The most significant difference between untreated and treated sewage sludge is that most of the __________ have been removed from the treated sludge.
[removed]metals
[removed]organic chemicals
[removed]pathogens

1 points  

Question 10

  1. The term biosolids is sometimes used to refer to __________.
[removed]manure collected from CAFOs
[removed]scum (floating material) inside a septic tank
[removed]treated municipal sewage sludge

1 points  

Question 11

  1. The bar screen, grinder, and grit chamber are used in __________.
[removed]municipal drinking water treatment
[removed]municipal solid waste disposal
[removed]primary sewage treatment

1 points  

Question 12

  1. Some likely human health impacts of polybrominated diphenyl ethers (PBDEs) are suggested by their chemical structure, which is similar to that of _______________.
[removed]human growth hormone
[removed]neurotransmitters
[removed]thyroid hormones

1 points  

Question 13

  1. Exposure to byproducts of disinfecting drinking water with chlorine has been associated with increased risk of __________.
[removed]bladder cancer
[removed]leukemia
[removed]oral cancer

1 points  

Question 14

  1. 21. Chlorination of drinking water is highly effective at killing __________.
[removed]bacteria
[removed]protozoa
[removed]viruses
[removed]all of the above

1 points  

Question 15

  1. Which of the following are steps in primary sewage treatment?
[removed]Bar screen, grinder, grit chamber, primary clarifier
[removed]Settling, coagulation and flocculation, sedimentation, filtration
[removed]Thickening and stabilization

Question 1

  1. Trihalomethanes are __________.
[removed]byproducts of drinking water disinfection
[removed]common as indoor air contaminants from consumer products
[removed]primarily a problem of medical wastes

Question 3

  1. Secondary sewage treatment is fundamentally a _______________ process.
[removed]biological
[removed]chemical
[removed]mechanical

Question 9

  1. Historically, the use of chlorine bleach has made the pulp and paper industry an important source of __________ contamination.
[removed]chromium
[removed]dioxin
[removed]polychlorinated biphenyls (PCBs)

Question 10

  1. Which of the following are steps in municipal drinking water treatment?
[removed]Bar screen, grinder, grit chamber, sedimentation tank
[removed]Settling, coagulation and flocculation, sedimentation, filtration
[removed]Thickening, stabilization, fluoridation

Question 12

  1. Which of the following chemicals are widely used as flame retardants in consumer products?
[removed]
[removed]Polybrominated diphenyl ethers (PBDEs)
[removed]Polychlorinated biphenyls (PCBs)

Question 15

  1. Industrial wastes, if not pretreated before entering a municipal wastewater treatment system, may __________.
[removed]cause damage to the municipal works
[removed]kill bacteria used in wastewater treatment
[removed]both a and b
 
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