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Exam (elaborations)

SDI Open Water Scuba Diver Exam Questions and Answers (100% Pass)

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Objects under water appear → Closer and larger than they do on land How much faster does sound travel in water, compared to air? → 4 times Water conducts heat away from your body → 25 times faster than air does As you descend → colors fade, reds and oranges fade first, 30 meters seem...

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  • September 25, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
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  • SDI
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1 | P a g e | © copyright 2024/2025 | Grade A+



SDI Open Water Scuba Diver Exam
Questions and Answers (100% Pass)
Objects under water appear


→ Closer and larger than they do on land




How much faster does sound travel in water, compared to air?


→ 4 times




Water conducts heat away from your body


→ 25 times faster than air does




As you descend


→ colors fade, reds and oranges fade first, 30 meters seem blue

and gray




water temp does your body need thermal protection


→ 86 degrees




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+


What does SCUBA mean


→ self-contained underwater breathing apparatus




When water stratifies itself into layers, according to temperature, the

boundary between layers is known as a(n):


1: Halocline.


2: Ichtyocline.


3: Thermodyne.


4: Thermocline.


→ Thermocline




What is the primary cause of waves?


→ wind




Which of the following factors do we take into account when measuring

waves?


→ Height, Length




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+


Which of the following is incorrect?


→ Waves are not hazardous to divers during shore dives




The consequences of becoming cold under water include the following

except


→ improved judgment and coordination




Because sound travels faster under water:


→ Its harder to determine the direction from which a sound is

coming




Entering through surf requires special skills. These skills are often included in

beginning scuba course taught in areas in which surf entries are common


→ true




which of the following are true


→ Surge is the back-and-forth movement of water caused by

passing over head




Master01 | September, 2024/2025 | Latest update

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