13.   Nuclear explosions are divided into how many classes? 1.   Five 2.   Two 3.   Three 4.   Four 14.   What would be the most effective type of nuclear strike to use against a battle group at sea? 1.   High altitude blast 2.   Air blast 3.   Surface blast 4.   Subsurface burst 15.   What type of nuclear strike would be used to destroy satellites and interrupt communications systems through the effects of EMP? 1.   High altitude blast 2.   Air blast 3.   Surface blast 4.   Subsurface burst 16.   In what type of nuclear strike would the shock wave near ground zero be greater than the blast wave? 1.   High altitude blast 2.   Air blast 3.   Surface blast 4.   Subsurface burst 17.   What are the effects of nuclear weapons? 1.   Blast waves only 2.   Incendiary only 3.   Radiation only 4.   Blast waves, incendiary, and radiation 18.   If a nuclear blast at night causes you to experience flash blindness, you can expect your vision to recover in what length of time? 1.   15 minutes 2. 2 hours 3. 3 hours 4.   45 minutes 19.   What type of radiation hazard must enter the body through ingestion or cuts to cause bodily harm? 1.   Alpha particles 2.   Beta particles 3.   Gamma rays 4.   Neutrons 20.   What is TREE? 1.   The absorption of EMP by electrical conductors 2.   Interference of passive sonar systems 3.   The affect of gamma or neutron radiation on shipboard electronic systems 4.   Interference of radio transmission through ion fields 21.   A survey team is made up of what minimum number of personnel? 1.   Five 2.   Two 3.   Three 4.   Four 22.   What person is in charge of a survey team? 1.   Monitor 2.   Recorder 3.   Messenger 4.   Exec 23.   Areas contaminated by CW, BW, or nuclear agents are identified by markers having what shape? 1.   Triangular 2.   Hexagonal 3.   Circular 4.   Square 24.   Dose rate is expressed in roentgens, which are gamma ray measurements only. 1.   True 2.   False 25.   What does the acronym radiac stand for? 1.   Radiation decontamination and control 2.   Radiological activity detection and computation 3.   Radioactivity defense, identification, and instrument calibration 4.   Radioactivity detection, indication, and computation 26.   The nonself-reading, high-range casualty dosimeter measures what maximum amount of gamma radiation? 1. 5 roentgens 2.   200 roentgens 3.   600 roentgens 4.  200 milliroentgens 45