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8.E.1.3 REVIEW

Quiz by Beth Hall

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14 questions
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  • Q1
    Which is of the following is a common source of nitrates?
    industrial waste
    runoff from fertilizer
    carbon dioxide
    human waste
    30s
  • Q2
    Which of the following is common source of phosphates?
    runoff from fertilizer
    industrial waste
    septic tank leakage
    sewage
    30s
  • Q3
    Which of the following is an example of a physical water quality indicator?
    fish
    dissolved oxygen
    salinity
    temperature
    30s
  • Q4
    What is dissolved oxygen?
    how clear or cloudy water is
    the amount of oxygen that is dissolved during chemosynthesis
    the amount of oxygen in water that is available for aquatic organisms to use
    oxygen produced from aquatic organisms
    30s
  • Q5
    As temperature of water increases, it will dissolve
    no change in oxygen disolution
    less oxygen
    more oxygen
    30s
  • Q6
    If water has high turbidity, then
    temperature increases and dissolved oxygen stays the same
    temperature increases and dissolved oxygen decrease
    temperature increases and dissolved oxygen increases
    temperature decreases and dissolved oxygen increases
    30s
  • Q7
    If water is not-potable, what does that mean?
    it is safe for all activities
    it is not safe for cleaning or bathing
    it is not safe to drink
    it is safe for drinking
    30s
  • Q8
    High salinity =
    high turbidity
    high biodiversity
    low biodiversity
    high DO
    30s
  • Q9
    What are the two factors related to biological indicators that show water health?
    pH level and number of macroinvertebrates
    presence of macroinvertebrates and DO
    salinity and turbidity
    presence and numbers of macroinvertebrates
    30s
  • Q10
    What is the stage in the water treatment process where air is added to wastewater?
    disinfection
    aeration
    filtration
    coagulation
    30s
  • Q11
    When dirt and other suspended particles get stuck together so they can be easily removed.
    disinfection
    coagulation
    filtration
    aeration
    30s
  • Q12
    What happens during sedimentation?
    gravity is used to pull particles of floc to the bottom of the waste container
    water is passed through sand and pebble filters to remove impurities
    disinfectants are added to the water to purify and kill harmful organisms
    dirt and other particles get stuck together so they can be easily removed from water
    30s
  • Q13
    Which step in water treatment occurs when water is passed through sand and pebbles to remove impuritites
    sedimentation
    coagulation
    filtration
    disinfection
    30s
  • Q14
    Why might a disinfectant (like chlorine) be added to water during the wastewater treatment process?
    to allow dirt and other particles to stick together for easier removal
    to help with filtration
    to improve taste and potability
    to purify water and kill harmful organisms
    30s

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