Quiz - Skills & Environment - Determining Accurate Distances

[Scraps]

My arm span is calibrated.

Pedro,
Until today, the asterisked answer that appeared with the tabulated results was always (unless I failed to notice) the correct one. Why is today different?

 

[Mike1967]

the asterisked answer

Pretty sure that just denotes your answer.

 

[Pedro Burrito]

Yes, the answer with the asterisk is your vote. Most people thought it was kick cycles but that is not the answer from the PADI Dive Theory exam.

 

[TMHeimer]

Whoa, in the minority and I win again, that's twice....

 

[scubadada]

Yes, the answer with the asterisk is your vote. Most people thought it was kick cycles but that is not the answer from the PADI Dive Theory exam.

You're kidding, have never ever heard arm spans mentioned, how useful is this going to be to measure anything but small items underwater? I'll pay attention to you measuring the wreck with your arm spans next time I see you. This is the 2nd question that I basically disagree with, you remember J-valves A good example of an unvalidated question, 12.5% correct?

 

[loosenit2]

Would that not be a calibrated measuring device, and thereore not allowed by the question?

Not necessarily. Generally to be calibrated an item of measurement has to be compared to a known quantity. In my example for line to be calibrated it would have to be marked and then measured again against a known distance measuring tool to verify that the markings were correct. Not necessarily an impossibility but not necessarily implied in the task. Most folks would mark it once and never actually "calibrate" the markings.

I missed the answer anyway, did not choose arm spans. I gotta be honest, I'm not sure how precise I would be underwater with arm spans. The control necessary to relocate your body in the water to accurately measure the starting point of one arm span from the ending point of another, without reference points would be extreme indeed.

 

[Boston Breakwater]

Good answer.

 

[Boston Breakwater]

From the Skills & Environment Section of the PADI Dive Theory Exam:

When a calibrated measuring device is unavailable, measuring with ___ is best for determining accurate distances.

a. time measurement

b. arm spans

c. kick cycles

d. air consumption​

I will post a daily question from my exams to help newer divers and to encourage more experienced divers to interact gracefully and helpfully with the newer divers.

Reminder - this is a post in the Basic Forum and it is a green zone. Please be nice and on topic.

Thank you for your patience while we try to give people something to discuss other than Covid-19 and/or Politics. I will post the answer covered by the spoiler tag later today.

Hello. I can understand why, a lot of divers chose "Kick." cycles. Long, long, before I started diving, as a child I had a knack for numbers, and enjoyed reading books, and watching movies. Many of them included "Outer Space." and "Inner Space."
Examples; 2001 A Space Odyssey ------------------20, 000 Leagues Under The Sea.
If, you stand, and open your arms, extending your hands, open palmed.....the distance will be approximately 6 ft. An arm span.
(Which, applies to a large majority of the world's population. This is a "Fathom."
A fathom is generally used to measure ocean depth.
The measurement can mostly certainly be used horizontally to aid divers. Although, I don't believe it is widely used.
Cheers.

 

[Couv]

This is the 2nd question that I basically disagree with, you remember J-valves A good example of an unvalidated question, 12.5% correct?

Stop copying off of my paper. That's the questions I've also (supposedly) got wrong.

 

[scubadada]

Stop copying off of my paper. That's the questions I've also (supposedly) got wrong.

Ha