12 Questions
Radiation which reaches a person from sources outside the body such as radiation producing machinery or radioactive metal, permeating the skin, tissues and bones. THE NATURE OF RADIATION INJURY: Protection - Utilize ______ (length of exposure), distance, shielding and monitoring equipment to nullify or decrease the hazards.
time
Exposure from radioactive materials taken into the body by breathing or swallowing radioactive dusts, vapors or gases. It is also possible to absorb through the skin through cuts or abrasions. Any radioactive material which presents an external hazard is likely to be an even more serious hazard if it gets into the body. Protection - Shielding by special protective clothing, breathing apparatus, no smoking or eating in the area, prompt, thorough washing of personnel, clothing and tools immediately after exposure.
Internal Radiation
Dosimeters tell the user how much ______ he has been exposed to.
radiation
The only way to detect radiation, since the senses do not respond to it, is by special instruments such as dosimeters and ______ counters.
Geiger
Geiger counters tell the user how much radiation is in the ______ area.
suspect
The amount of damage done to an individual by radiation varies with the individual. The age, build and physical condition are important ______.
factors
The type of radiation, depth of penetration, how much body area exposed and length of exposure time or repeated exposures also determine the ______ of damage.
amount
Excessive exposures are characterized by a delay; days, weeks, months or ______ may pass before the final effects become apparent.
years
The exposure of the entire body is much more damaging and of ______ consequence than the exposure of any part of the body to the same or even greater amounts of radiation.
greater
Phase I: The early symptoms are nausea, vomiting, general prostration and weakness, diarrhea and low blood ______.
pressure
Phase II: After the first onset of illness, symptoms tend to disappear for a period of a few days to several ______.
weeks
Phase III: The illness reaches its zenith and here most ______ occur.
fatalities
Test your knowledge on radioactive materials and licensing requirements in the United States. Explore the various uses of radioactive materials, from mining to X-ray machines, and learn about the terms and situations covered by licenses.
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