PADI - Dive Theory Overall Test Question 100% Correct Answers [Q&A] verified

PADI - Dive Theory Overall Test Question 100% Correct Answers [Q&A] verified Water is able to conduct heat about ______ times faster than air.Choose your answer. A 3200 B 775 C 100 D 20 *Ans* 20 times faster ___________, a form of heat transmission, has the greatest affect on heat loss in a diver while ________ is the form that has the least affect.Choose your answer. A convection/radiation B radiation/conduction C conduction/radiation D conduction/convection *Ans* conduction - radiation A process called _________ refers to the tendency of light to ________ as it passes through two mediums with different densities.Choose your answer. A absorption/change color B refraction/bend C turbidity/weaken D diffusion/bend *Ans* refraction -- bend At times, objects viewed underwater appear more distant than they actually are. This phenomenon is called "_________" and the factor that primarily influences its occurrence is ___________.Choose your answer. A distance perception/depth B diffusion/sunlight C visual reversal/turbidity D visual reversal/depth *Ans* visual reversal -- turbidity The density and elasticity of a medium has what effect upon the transmission of sound? Choose your answer. A The denser and more elastic the medium, the better sound is transmitted. B The denser and more elastic the medium, the poorer sound is transmitted. C The denser and more elastic the medium, the less sound can be transmitted. D Density and elasticity of a medium has no effect upon the transmission of sound. *Ans* The denser and more elastic the medium, the better sound is transmitted. Sound travels approximately _____ times faster in water than it does in air.Choose your answer. A two B four C ten D twenty *Ans* four Divers have difficulty determining the direction of sound underwater because: Choose your answer. A there is an insufficient delay between the sound striking one ear before the other. B water filling the ear canal reduces the ear's sensitivity to sou