Quiz - 2 - Diving Knowledge Workbook - Diving Physics

[Pedro Burrito]

From the Diving Physics Section of the PADI Diving Knowledge Workbook Version 2.02 © PADI 2009:

1.1 Question 2

Divers are most affected by what form of heat transmission?

a. Conduction

b. Convection

c. Radiation

d. All the above are equally important​

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[Jcp2]

I’m assuming the “correct” answer applies to people whilst in the act of diving, not before or afterwards, as in DAN diving accident insurance definitions.

 

[Dark Wolf]

I’m assuming the “correct” answer applies to people whilst in the act of diving, not before or afterwards, as in DAN diving accident insurance definitions.

Before and after is exactly why I picked D. Depends on a number of factors.

DW

 

[Ukmc]

I don’t know about radiation, but conduction and convection are big factors when it comes to heat loss... do we lose a lot of heat via radiation???

 

[saxman242]

do we lose a lot of heat via radiation???

During normal conditions, we lose about 65% of our heat from radiation. If you're sitting out in direct sunlight, overheating, you're absorbing heat due to radiation.

Underwater, conduction is king.

 

[Ukmc]

During normal conditions, we lose about 65% of our heat from radiation. If you're sitting out in direct sunlight, overheating, you're absorbing heat due to radiation.

Underwater, conduction is king.

But all equally important??? If conduction is a king, convection should at the very least be a queen... how about that poorly fitted wetsuit?

 

[saxman242]

how about that poorly fitted wetsuit?

There isn't much fluid flow going on inside a wet suit... well, except for every once in a while

 

[Couv]

Of course without the sun we would all freeze over-therefore the correct answer has to be...j/k

 

[Ukmc]

There isn't much fluid flow going on inside a wet suit... well, except for every once in a

Of course without the sun we would all freeze over-therefore the correct answer has to be...j/k

way to think globally! The way you put it, radiation is definitely disproportionally more important

 

[TMHeimer]

I knew how most heat is lost while diving but was unsure of the word for it. (educated) Guessed correctly.
Another easy question. Of course they're talking about when you're diving-- for Pete's sake.