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vankor vankor
wrote...
Posts: 569
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4 years ago
Which of the following is TRUE with respect to cell phone use and radiation exposure?
 
  A) Radiation from cell phones cannot penetrate the head.
  B) Cell phone use releases radio-frequency electromagnetic radiation.
  C) Long-term studies have proven that cell phone use is entirely risk-free.
  D) The smaller the device, the greater the level of exposure.



What percentage of the radiation to which we are exposed is due to medical and dental procedures?
 
  A) 15 percent
  B) 25 percent
  C) 35 percent
  D) 45 percent



Within what range of radiation exposure do symptoms of sickness begin to appear?
 
  A) 50 to 100 rads
  B) 100 to 200 rads
  C) 200 to 300 rads
  D) 300 to 400 rads



The sun's high-frequency ultraviolet rays and medical and dental x-rays are examples of which type of radiation?
 
  A) Nonionizing
  B) Ionizing
  C) Alpha wave
  D) Microwave



The percentage of trash that could potentially be recycled in the United States is estimated to be as much as
 
  A) 60 percent.
  B) 70 percent.
  C) 80 percent.
  D) 90 percent.
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TurtleTurtle
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Top Poster
Posts: 797
Rep: 8 0
4 years ago
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vankor Author
wrote...
4 years ago
Cheers!!
wrote...
9 months ago
thanks
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