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SDI Open Water Scuba Diver Exam Questions and Correct Answers the Latest Update and Recommended Versio $10.49   Add to cart

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SDI Open Water Scuba Diver Exam Questions and Correct Answers the Latest Update and Recommended Versio

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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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  • October 20, 2024
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2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!


SDI Open Water Scuba Diver Exam
Questions and Correct Answers the Latest
Update and Recommended Version
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


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.



1|Page| GradeA+ | 2 0 0 2 5

, 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!

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


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

1|Page| GradeA+ | 2 0 0 2 5

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