7-44. Dangerous  high  explosives  that  have been  scattered  by  an  explosion  may be  recognized  by  their  appearance. If  they  are  fused,  what  will  be their  appearance? 1.  White  powdery 2. Tan or buff 3 .   P i n k 4 .   B l u e 7-45. The  size  of  the  kill  zone  and damage-survival zones of a nuclear detonation  is  determined  primarily by  which  of  the  following circumstances? 1.    The  weapon  yield 2.    The altitude at which detonation  takes  place 3.  The  direction  of  the  prevailing wind 4.    The  amount  of  high  explosives used Figure  7B.--Causes. TO ANSWER QUESTIONS 7-46 THROUGH 7-49, SELECT FROM FIGURE 7B THE CAUSE OF THE DAMAGE RESULTING FROM A NUCLEAR DETONATION AS DESCRIBED IN THE STATEMENTS. RESPONSES MAY BE USED ONCE, MORE THAN ONCE, OR NOT AT ALL. 7-46. Damage  to  boiler  brickwork, e s p e c i a l l y    f l o o r s . 1.   A 2.   B 3.   C 7-47. Dishing  and  rupturing  of  shell plating  below  the  waterline. 1.   A 2.   B 3 .   C 7-48. 7-49. 7-50. 7-51. 7-52. 7-53. Dishing  of  shell  plating  above  the waterline. 1.   A 2.   B 3.   C Rupturing  of  topside  piping systems. 1.   A 2.   B 3.   C The  primary  cause topside   personnel of  injury  to who  are  exposed to  a  nuclear  air  blast  is 1 .   h e a t 2.    nuclear  radiation 3.    bodily  displacement 4.    displacement  of  loose  gear If  an  underwater  shock  is  expected, which  of  the  following  actions should  you  take  to  reduce  the potential  for  personal  injuries? 1. 2. 3. 4. I f Lie  prone  on  the  deck Curl up on the deck and cover your  face Hold  on  to  a  solid  structure, flex  your  knees,  and  rest  on the  balls  of  your  feet Stand  clear  of  all  structures and  watch  for  flying  objects you  see  the  sky  light  up  from  a nuclear  detonation,  what  is  the first  action  you  should  take? 1.   Close  your  eyes 2.   Drop  to  the  deck 3.  Flex  your  knees 4.  Grab  a  solid  structure Which  of  the  following  types  of major  contamination  is  NOT  likely i n 1. 2. 3. 4. a  nuclear  attack? Alpha  particles Beta  particles Gamma rays Neutrons 49