CDC Technology For Electromagnetic Waves

51 Questions

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Electromagnetic Wave Quizzes & Trivia

Electromagnetic waves also known as electromagnetic radiation are waves of electromagnetic field moving through space-time, carrying electromagnetic energy. How well do you know about this topic? Take up the quiz and find out. All the best.


Questions and Answers
  • 1. 
    Which person is appointed by the wing commander and is the focal point for all aspects of radiation protection?
    • A. 

      Unit radiation safety officer.

    • B. 

      Command radiation safety officer.

    • C. 

      Installation radiation safety officer.

    • D. 

      Unit radiation safety committee officer.

  • 2. 
    Which provides regulatory oversight for the use of radioactive materials by Air Force (AF) organizations?
    • A. 

      AF Radioisotope committee (RIC).

    • B. 

      Radiation safety committee (RSC).

    • C. 

      AF Surgeon General’s office (USAF/SG).

    • D. 

      Environmental protection agency (EPA).

  • 3. 
    Who is the unit commander’s point of contact for radiation protection matters?
    • A. 

      Unit radiation safety officer.

    • B. 

      Command radiation safety officer.

    • C. 

      Installation radiation safety officer.

    • D. 

      Unit radiation safety committee officer.

  • 4. 
    The more kinetic energy the electrons have, the
    • A. 

      Closer they are to each other.

    • B. 

      Closer they are to the nucleus.

    • C. 

      Farther they are from each other.

    • D. 

      Farther they are from the nucleus.

  • 5. 
    A rock rolling down a hill contains what form of energy?
    • A. 

      Kinetic.

    • B. 

      Velocity.

    • C. 

      Potential.

    • D. 

      Centrifugal.

  • 6. 
    What is the magnetic field also known as?
    • A. 

      E field.

    • B. 

      H field.

    • C. 

      K field.

    • D. 

      M field.

  • 7. 
    The number of electromagnetic waves passing a certain point in one second is known as
    • A. 

      Energy.

    • B. 

      Intensity.

    • C. 

      Frequency.

    • D. 

      Wavelength

  • 8. 
    As the frequency becomes higher, wavelength becomes
    • A. 

      Slower.

    • B. 

      Longer.

    • C. 

      Faster.

    • D. 

      Shorter

  • 9. 
    The amount of energy flowing through a given area in a certain amount of time refers to what measure of electromagnetic radiation?
    • A. 

      Activity.

    • B. 

      Frequency.

    • C. 

      Intensity.

    • D. 

      Wavelength.

  • 10. 
    What is the real concern due to the potential hazards associated with higher frequencies of radiofrequency radiation?
    • A. 

      Relationship between frequency and Plank’s constant.

    • B. 

      Relationship between ionizing and non-ionizing radiation.

    • C. 

      Relationship between intensity and distance from the source.

    • D. 

      Relationship between wavelength and the size of body organs.

  • 11. 
    A tanning booth is a good example of which type of radiation?
    • A. 

      Gamma.

    • B. 

      Visible.

    • C. 

      Infrared.

    • D. 

      Ultraviolet.

  • 12. 
    If the wavelength of a radiofrequency radiation (RFR) emission is 20 centimeters (cm), a waveguide designed for it must have one dimension that is at least
    • A. 

      5 cm.

    • B. 

      10cm.

    • C. 

      20 cm.

    • D. 

      40 cm.

  • 13. 
    In what region of the radio frequency radiation (RFR) spectrum does most radar operate?
    • A. 

      Infrared.

    • B. 

      Microwave.

    • C. 

      Low frequency.

    • D. 

      Communications.

  • 14. 
    Which is an example of radio frequency radiation (RFR) emitter found on Air Force bases?
    • A. 

      Cathode.

    • B. 

      Scanner.

    • C. 

      Laser pointer.

    • D. 

      Electronic countermeasures.

  • 15. 
    Which radiofrequency radiation (RFR) health effect is the biological effect not associated with thermal absorption?
    • A. 

      Thermal.

    • B. 

      Athermal.

    • C. 

      Indirect.

    • D. 

      Resonance.

  • 16. 
    Which is an example of an indirect effect of radiofrequency radiation (RFR)?
    • A. 

      Deoxyribonucleic acid (DNA) damage.

    • B. 

      Electronic interference.

    • C. 

      Energy reflection.

    • D. 

      Tissue heating.

  • 17. 
    Which radiofrequency radiation (RFR) emitter should be the highest priority during the evaluation phase?
    • A. 

      Inaccessible.

    • B. 

      Short duration.

    • C. 

      Climbing hazard.

    • D. 

      Ground-level hazard.

  • 18. 
    Which radiofrequency radiation (RFR) emitter should be the second priority during the evaluation phase?
    • A. 

      Inaccessible.

    • B. 

      Short duration.

    • C. 

      Climbing hazard.

    • D. 

      Ground-level hazard.

  • 19. 
    When evaluating these radiofrequency radiation (RFR) emitters, their repair and maintenance shops should be a higher priority than routine operations.
    • A. 

      Inaccessible

    • B. 

      Short duration.

    • C. 

      Climbing hazard.

    • D. 

      Ground-level hazard.

  • 20. 
    If you need the radiofrequency radiation (RFR) permissible exposure limit (PEL) for radiation workers that have been trained and understand the hazards of exposure, you should look in the table for which environment?
    • A. 

      Shielded.

    • B. 

      Unshielded.

    • C. 

      Upper tier.

    • D. 

      Lower tier.

  • 21. 
    Which radiofrequency radiation (RFR) environment would describe the exposure for customers at a golf course near an emitter?
    • A. 

      Shielded.

    • B. 

      Unshielded.

    • C. 

      Upper tier.

    • D. 

      Lower tier.

  • 22. 
    What is the first step in any radio frequency radiation (RFR) hazard distance calculation?
    • A. 

      Solve for the antenna.

    • B. 

      Calculate the wavelength.

    • C. 

      Determine the average power.

    • D. 

      Determine the permissible exposure limit (PEL).

  • 23. 
    Which kind of system is described with the information below?
    • A. 

      Laser

    • B. 

      Pulsed wave.

    • C. 

      Ionizing source.

    • D. 

      Continuous wave.

  • 24. 
    What step must you take after obtaining radio frequency radiation (RFR) meter readings in order to find the real power density?
    • A. 

      Compensate for temperature.

    • B. 

      Multiply by the correction factor.

    • C. 

      Account for the calibration curve.

    • D. 

      Calculate the time-weighted average.

  • 25. 
    Where should you hold the probe while conducting radio frequency radiation (RFR) measurements?
    • A. 

      Above your head.

    • B. 

      Close to your body.

    • C. 

      In front of your body.

    • D. 

      To one side of your body.

  • 26. 
    Which radio frequency radiation (RFR) control is specifically required for upper tier areas where frequencies are below 30 MHz?
    • A. 

      Dummy loads.

    • B. 

      Wooden fences.

    • C. 

      Safety interlocks.

    • D. 

      Electrical safety matting.

  • 27. 
    At the onset of a radio frequency radiation (RFR) overexposure investigation, make sure the exposed individual gets a
    • A. 

      Complete report.

    • B. 

      Thorough interview.

    • C. 

      Record of exposure.

    • D. 

      Medical evaluation.

  • 28. 
    You must forward all documentation of radio frequency radiation (RFR) overexposure investigation to the Air Force Institute for Occupational Health (AFIOH) if the exposures may have exceeded
    • A. 

      The permissible exposure limit (PEL).

    • B. 

      Two times the PEL.

    • C. 

      Five times the PEL.

    • D. 

      Ten times the PEL.

  • 29. 
    Which laser is capable of causing injury during normal use?
    • A. 

      Class 4.

    • B. 

      Class 3.

    • C. 

      Class 2.

    • D. 

      Class 1.

  • 30. 
    What is the most common cause of laser-induced tissue injury?
    • A. 

      Thermal.

    • B. 

      Indirect.

    • C. 

      Blindness.

    • D. 

      Photochemical.

  • 31. 
    Which wavelength range damages the cornea by the same photochemical mechanism as sunlight?
    • A. 

      Far Ultraviolet (UV).

    • B. 

      Far Infrared (IR).

    • C. 

      Near UV.

    • D. 

      Visible.

  • 32. 
    Which is not one of the three primary operational aspects that influence a laser hazard evaluation?
    • A. 

      Personnel and/or PAR exposed to laser radiation.

    • B. 

      Laser system capability to cause injury.

    • C. 

      Environment in which the laser is used.

    • D. 

      Nominal Hazard Zone.

  • 33. 
    Which laser does not require a laser hazard evaluation?
    • A. 

      Class 1.

    • B. 

      Class 3B.

    • C. 

      Class 4.

    • D. 

      Class 4.

  • 34. 
    What program does the Air Force use for laser safety assessment and hazard control?
    • A. 

      LHAZ.

    • B. 

      ASIMS.

    • C. 

      DOEHRS.

    • D. 

      OEH-MIS.

  • 35. 
    Maximum permissible exposure limits are initially established by which agencies/individuals?
    • A. 

      American National Standards Institute (ANSI).

    • B. 

      Laser Institute of America (LIA).

    • C. 

      MAJCOM BE and Installation Radiation Safety Officer (RSO).

    • D. 

      Occupational Safety and Health Administration (OSHA).

  • 36. 
    Maximum permissible exposure limits are based upon exposure duration, output, and exposure conditions and which of the following?
    • A. 

      Frequency.

    • B. 

      Hazard distance.

    • C. 

      Power density.

    • D. 

      Wavelength.

  • 37. 
    For outdoor operations, the nominal hazard zone (NHZ) may be limited somewhat by
    • A. 

      Terrain.

    • B. 

      Elevation.

    • C. 

      Temperature.

    • D. 

      Barometric pressure

  • 38. 
    The distance from a laser to a point where the energy of the beam falls below the ocular maximum permissible exposure level is called?
    • A. 

      Nominal hazard zone (NHZ).

    • B. 

      Upper tier environment (UTE).

    • C. 

      Estimated hazard distance (EHD).

    • D. 

      Nominal ocular hazard distance (NOHD).

  • 39. 
    Which is an example of an administrative control for the use of lasers?
    • A. 

      Key controls.

    • B. 

      Safety training.

    • C. 

      Viewing windows.

    • D. 

      Controlling the use of optics.

  • 40. 
    Which skin cover fabric provides the best protection against lasers?
    • A. 

      Loose.

    • B. 

      Light colored.

    • C. 

      Tightly woven.

    • D. 

      Darkly colored.

  • 41. 
    Which delegates authority to the Installation Laser Safety Officer to suspend operations involving the operation of laser or other optical radiation sources that pose a significant health risk to personnel?
    • A. 

      Installation Commander (WG/CC).

    • B. 

      Medical Group Commander (MDG/CC).

    • C. 

      MAJCOM Bioenvironmental Engineer (MAJCOM/SGPB).

    • D. 

      Air Force Medical Support Agency, Bioenvironmental Engineering Division (AFMSA/SG3PB).

  • 42. 
    Within how many days of completion of a Laser overexposure investigation does the Installation Laser Safety Officer forward a detailed report to Installation Public Health, BE, Safety, JA, MAJCOM BE, and AFMSA/SG3PB.
    • A. 

      5.

    • B. 

      20.

    • C. 

      30.

    • D. 

      90.

  • 43. 
    Within what spectral region of the electromagnetic spectrum does ultraviolet radiation fall?
    • A. 

      100–400 nanometers.

    • B. 

      400–700 nanometers.

    • C. 

      700–1400 nanometers.

    • D. 

      1400–3000 nanometers.

  • 44. 
    The ultraviolet rays located in the UV-B range of the electromagnetic spectrum are considered the most destructive form of ultraviolet radiation because they
    • A. 

      Have the ability to kill bacteria.

    • B. 

      Produce a pigment-darkening effect.

    • C. 

      Are the strongest of the ultraviolet rays.

    • D. 

      Have enough energy to cause photochemical damage to cellular deoxyribonucleic acid (DNA).

  • 45. 
    Which is a target organ for ultraviolet radiation?
    • A. 

      Ears.

    • B. 

      Eyes.

    • C. 

      Lungs.

    • D. 

      Kidneys.

  • 46. 
    Which conditions can be attributed to repeated exposure to ultraviolet radiation by the skin?
    • A. 

      Conjunctivitis.

    • B. 

      Photokeratitis.

    • C. 

      Flash burn.

    • D. 

      Erythema.

  • 47. 
    Which options provides the most effective method of controlling overexposure to natural ultraviolet radiation?
    • A. 

      Limiting exposure time.

    • B. 

      Interlocking doors.

    • C. 

      Blocking filters.

    • D. 

      Opaque barriers.

  • 48. 
    Because infrared radiation is detectable as heat, exposures can be a significant contributor to what condition?
    • A. 

      Erythema.

    • B. 

      Thermal stress.

    • C. 

      Basal cell carcinoma.

    • D. 

      Squamous cell carcinoma.

  • 49. 
    Which biological effects can be associated with an overexposure to infrared radiation?
    • A. 

      Phytosensitivity.

    • B. 

      Lens yellowing.

    • C. 

      Corneal burn.

    • D. 

      Flash burn.

  • 50. 
    Which infrared radiation control options can be associated with the principle of shielding?
    • A. 

      Protective clothing.

    • B. 

      Interlocking doors.

    • C. 

      Blocking filters.

    • D. 

      Canopies.

  • 51. 
    When determining infrared radiation hazard controls, what is the selection of a barrier dependent upon?
    • A. 

      Wavelength.

    • B. 

      Thermal load.

    • C. 

      Total exposure time.

    • D. 

      Distance from the source.