MULTIPLE CHOICE
1. If ionizing radiation from natural sources grows larger because of accidental or
deliberate human actions such as mining radioactive
... [Show More] elements, the sources are termed
a. artificial sources.
b. enhanced natural sources.
c. extraterrestrial sources.
d. manmade sources.
ANS: B
2. Electromagnetic radiation travels or propagates through space in the form of a wave but can
interact with matter as a particle of energy called a photon. This dual nature is referred to as
a. wave attenuation capability.
b. wave-particle interchange ability.
c. wave-particle duality.
d. wave-particle phenomena.
ANS: C
3. Which of the following statements concerning the 1979 nuclear reactor accident at TMI-2
is not true?
a. Many excess cancer deaths have been predicted to occur in the 2 million people
living within 50 miles of Nthe RplantI atGtheBtime.C ofMthe accident.
USNT O
b. During the time of the accident, if persons living within a 100-mile radius of the
nuclear power plant received an average radiation exposure of 15 microgray, and
this dose is used as the population dose, then no more than two additional
resulting cancer deaths can be predicted in the exposed inhabitants as a
consequence of radiation exposure.
c. The average dose received by the exposed population living within a 50-mile radius
of the TMI nuclear power station at the time of the accident was determined to be
0.08 mSv, which is well below the average annual background level.
d. No melt-through of the reactor vessel resulted during the accident.
ANS: A
4. Terrestrial radiation includes which of the following sources?
a. Long-lived radioactive elements such as uranium-238, radium-226, and
thorium-232 that are present in variable quantities in the crust of the earth
b. Radioactive fallout from nuclear weapons tests in which detonation
occurred above ground
c. The sun and beyond the solar system
d. Airport surveillance systems and electron microscopes
ANS: A [Show Less]