kceh air

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kceh air
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2014-02-19 18:38:00
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  1. ______ have been known to cause crippling skeletal damage to cattle through ingested contaminated vegetation
    fluorides
  2. Animals are primarily affected by the fluorides in the air
    through ingesting vegetation
  3. The concentration resulting from a continuous emission of a pollutant is directly proportional to wind speed

    A.  true
    b.  false
    b.  false
  4. The ______ of a sound wave is the energy transferred per unit time (sec) through a unit area normal to the direction of propagation.
    intensity
  5. The first Federal standards for occupational exposure to noise were issued by
    department of labor
  6. Which of the following types of materials are known to reflect sound?
    rubber tiles
  7. Fluorocarbons in the atmosphere are of concern because they may

    a.  react with the ozone in the upper atmosphere, thus reducing the total amount of ozone available

    b. cause an increase in ultraviolet radiation reaching the earth

    c. cause an increase in skin cancers and changes in our climate, animal, and plant life

    d.  all of the above
    d. all of the above
  8. A major effect of stratospheric ozone layer depletion is
    increase in incidence of non-melanoma skin cancer
  9. Areas on the windward side of mountain ranges can expect less precipitation due to the forced rising, expansion, and cooling of moving air masses.

    a.  true
    b.  false
    b.  false
  10. A ______ is a dimensionless unit to express physical intensity or sound pressure levels.
    decibel
  11. ______ can be formed as a result of the sun's action on nitrogen oxides and hydrocarbons
    ozone
  12. Street dust would be considered what type of pollution?
    fugitive pollutant
  13. Chlorofluorocarbons increase the amount of ozone in the atmosphere.

    a.  true
    b.  false
    b.  false
  14. The accumulation or increased concentration of a continuously emitted pollutant is
    inversely proportional to wind speed
  15. A deterioration in the ozone layer of the stratosphere can cause an increase in ultraviolet radiation reaching the earth.

    a.  true
    b.  false
    a.  true
  16. Individuals react differently to noise depending on age, sex, and socioeconomic background.

    a.  true
    b  false
    a.  true
  17. For workers, a sound level above ______ dBA should be considered unsafe for daily exposure over a period of months
    • 90-OSHA
    • 85-cal OSHA
  18. The Ringlemann chart method of evaluating particle pollution in the atmosphere is being replaced by a determination of the
    percent opacity
  19. Sound absorbing materials absorb low frequency sounds much more effectively than high frequency sounds

    a.  true
    b.  false
    b.  false
  20. Precipitation accomplishes an effective cleansing process of pollutants in the atmosphere by
    • -accumulation of small particles in the formation of raindrops or snowflakes in clouds                
    • -the washing out of scavenging of large particles by falling raindrops or snowflakes         
    • -removal of gaseous pollutants by dissolution and absorption
  21. In what part of the earth's atmosphere are photochemical oxidants produced?
    troposphere
  22. A hammering type noise often heard in a plumbing system is usually due to
    a quick-closing valve requiring installation of an air chamber
  23. The precise levels at which specific air pollutants become a health hazard are relatively easy to establish by existing surveillance systems

    a.  true
    b.  false
    b.  false
  24. Turbulence is the wind characteristic that is
    the most effective mechanism for the dispersion or dilution of a cloud or plume of pollutants
  25. A primary pollutant is
    one that is found in the atmosphere in the same form as it exists
  26. Which component of clean, dry air has the smallest volume?
    sulfur dioxide
  27. What type of air pollution causes bleaching of leaves in plants?
    sulfur dioxide
  28. Photochemical smog has been reported in congested areas with
    high motor vehicle traffic
  29. The ratio of the energy passing through a wall, floor, or ceiling to the energy striking it is called
    sound transmission loss
  30. Injury to plants due to ______ shows up as flecks, stipple and bleaching, tip burns on conifers, and growth suppression.
    ozone
  31. Dry cotton ear plugs are just as effective against noise control as expensive fitted ear plugs and earmuffs

    a.  true
    b.  false
    b.  false
  32. The effects of air pollution are influenced by
    • a. wind speed, and direction
    • b. sunlight                                      
    • c.precipitation
  33. ______ involves the chemistry, physics, and dynamics of the atmosphere and includes many direct effects of the atmosphere on the earth's surface, ocean, and life.
    meteorology
  34. Which of the following are examples of short-range primary pollutants?
    total suspended solids and sulfur dioxide
  35. When two pollutants are combined, the effects are greater than the sum of the individual effects. This is called
    synergism
  36. Continuous exposure to high-level noise is less harmful than intermittent or occasional exposure.

    a.  true
    b.  false
    b.  false
  37. The United States Environmental Protection Agency has the sole responsibility for implementing "The Noise Control Act of 1972."

    a.  true
    b.  false
    b.  false
  38. For a pure tone (single frequency) to be produced, there must be a one-to-one correspondence between
    loudness and intensity
  39. The terms "washout" and "rainout" both refer to a cleansing process of pollutants in the atmosphere.

    a.  true
    b.  false
    a.  true
  40. Particle size selective inlets are used to separate particulates above and below 2 to 3 microns in size on
    high volume samplers
  41. Impurities in combustible hydrocarbons (coal and oil) combine with oxygen to produce ______ when burned
    sulfur dioxide
  42. How are total suspended particles measured?
    collection and weighing
  43. Ozone can be formed by the action of sunlight on nitrogen oxides and hydrocarbons.

    a.  true
    b.  false
    a.  true
  44. The meteorological elements that have the most direct and significant effects on the distribution of air pollutants are
    • -solar radiation
    • -wind speed and direction
    • -precipitation and stability
  45. The "Ozone Hole" was first noticed in
    antarctica
  46. Particulates larger than 10 microns can penetrate easily into the respiratory tract.

    a.  true
    b.  false
    b.  false
  47. The Montreal Protocol categorizes ______ and ______ in two classes based on their ozone-depiction potential
    • -Halons
    • -CFC
  48. Which of the following is not a malodorous gas?

    a. sulfur dioxide                                
    b. hydrogen sulfide                                       c. carbon monoxide                                       d. phenol
    c.  carbon monoxide
  49. If 10 decibels is 10 times more intense than one decibel, how many times more intense is 20 decibels than one decibel?
    100
  50. Bacteria and spores are considered natural sources of air pollution.

    a.  true
    b.  false
    a.  true
  51. In the United States, the Ringlemann smoke chart consists of how many rectangular charts?
    4
  52. In general terms, it is safe to assume that any two identical sound levels will have the effect of increasing the overall level by 10 dB.

    a.  true
    b.  false
    b.  false
  53. Some specific measures that can be used to reduce the effect of highway noise include
    • a. setting lower speed limits for certain sections of a highway
    • b. establishing alternate truck routes
    • c. enclosure of highways going through residential areas
  54. Stability of the atmosphere
    • -is the ability to enhance or suppress vertical air motions 
    • -is largely determined by the vertical temperature profile
  55. The most common type of noise measurement device used for initial surveys to provide rapid evaluation and identification of potential problem areas is the
    sound level meter
  56. Which of the following is not a primary pollutant?
    sulfuric acid
  57. Almost all sound contains multiple frequencies.

    a.  true
    b.  false
    a.  true
  58. Emissions which find their way into the ambient air without being vented through a stack are known as
    fugitive emissions
  59. Air pollutants may be in the form of microorganisms.

    a.  true
    b.  false
    a.  true
  60. It is possible to control noise
    • -at the source
    • -in its path of transmission
    • -where it is received
  61. Stack samples must be collected at the same speed of flow that gases normally pass through the stack.

    a.  true
    b.  false
    a.  true
  62. Sounds with a frequency of 30 hertz (Hz) are considered very low pitch.

    a.  true
    b.  false
    a. true
  63. Scrubbers are wet collectors generally used to remove particles that form as a
    fog, mist, or dust
  64. Which of the following are major sources of sulfur dioxide pollution?
    • -metal smelters
    • -coal and oil burning power plants
    • -refineries
  65. CFCs are widely used because they are
    chemically stable
  66. The distance that a sound wave travels in one cycle or period is the
    wavelength of the sound
  67. Transportation is the largest source of air pollution.

    a.  true
    b.  false
    a.  true
  68. The information needed to use an air quality model includes
    meteorological data, pollutant concentration data, and source emissions data
  69. A particle count of above ______ is said to be representative of an urban area
    50,000
  70. The normal change in temperature with altitude is
    noted as a decrease due to expansion and thus adiabatic cooling of air

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