Objects underwater appear Study guides, Class notes & Summaries
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SDI Open Water Scuba Diver Exam | Questions with 100% Correct Answers | Verified | Latest Update 2024
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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 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 temperat...
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SSI Open Water Exam With Correct Solutions 2024
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SSI Open Water Exam With Correct Solutions 2024 
 
 
 
 
 
 
 
 
 
 
Which of the statements concerning sound transmission underwater is incorrect? 
-Sound will travel farther underwater then in air 
-Divers find it difficult to locate the direction of a sound producing source 
-Divers find it easy to talk to each other directly through water 
-Sound travels four times faster underwater than in air - correct answer.-Divers find it easy to talk to each other directly through water 
 
The absolu...
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SDI Final Exam | 65 Questions with 100% Correct Answers | Verified | Updated 2023 | 27 Pages
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Objects under water appear: 
1: The same size as they do on land. 
2: Twice as large as they do on land. 
3: Closer and larger than they do on land. 
4: Smaller and farther away than they do on land. - Closer and larger than they do on land. 
As you descend: 
1: Colors appear to fade. 
2: Reds and oranges are among the first colors to disappear. 
3: At 30 m/99 ft, little color remains other than blues, grays, blacks and whites. 
4: All of the above. - All of the above. 
Which of the following st...
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PADI Open Water Diver Final Exam with 100% Correct Answers 2024 /2025
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PADI Open Water Diver Final Exam with 
100% Correct Answers 2023 
As a newly certified PADI Open Water Diver, I will be trained to dive with buddy as deep 
as - Correct Answer-18 metres/60 feet 
As you descend in water, the pressure - Correct Answer-increases 
A depth change of 10 metres/33 feet causes a pressure change of - Correct Answer-1 
bar/ata (atmosphere) 
if you take 6 liters of air from the surface to 20 metres/66 feet, the volume will be - 
Correct Answer-2 litres (the density of the ...
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SSI Open Water Diver Final Exam: Sections 1 – 6 Questions and Answers
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If you experience pain in the ear during descent: 
 
A - Place a finger in the ear canal and gently massage the ear until the pain ceases 
 
B - Stop the descent and ascend until the pain stops 
 
C - Continue the descent while gently exhaling into the mask 
 
D - Abort the dive - Answer- B - Stop the descent and ascend until the pain stops 
 
Earplugs: 
 
A - Protect against cold 
 
B - Protect the ears from squeeze 
 
C - Aid equalization of the middle ear 
 
D - Should never be worn while div...
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SSI Open Water Diver Exam Questions and Answers All Correct
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SSI Open Water Diver Exam Questions and Answers All Correct 
One atmosphere of pressure is defined as: 
 
a) Each 34 feet of depth in freshwater 
 
b) each 33 ft. of depth in saltwater 
 
c) 1 ata 
 
d) All answers are correct. - ANSWER All answers are correct 
 
The absolute pressure expressed in terms of atmospheres absolute at 33 ft. in sea water is: 
 
a) 1 ata 
 
b) 3 ata 
 
c) 2 ata 
 
d) 4 ata - ANSWER 2 ata 
 
Underwater, the bending of light rays causes objects ...
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SSI Open Water Exam Practice Questions and Answers
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Earplugs 
A-Aid equalization of the middle of the ear 
B- Protect against cold 
C-Should never be worn while diving 
D-Protect ears from squeeze - Answer- C 
 
The first symptom of a sinus squeeze is usually: 
A- a dull pain deep within the head 
B- a sharp pain at the base of the neck 
C- a crushing pain high in the chest 
D- a sharp pain above the eyes - Answer- D 
 
One atmosphere of pressure is defined as: 
A-Each 34 ft of depth in freshwater 
B-Each 33 ft of depth in seawater 
C-1 ata ...
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SDI Open Water Scuba Diver Exam correct answers
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How big do Objects underwater appear 
Objects appear 33% larger underwater. 
How far away do objects appear underwater? 
Objects appear 25% closer. 
How much faster does sound travel in water, compared to air? 
4 times 
How fast does Water conduct heat away from your body 
25 times faster than air does 
As you descend what happens to colors and which colors? 
colors fade, reds and oranges fade first, 30 meters seem blue and gray 
At what water te
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SSI Open Water Diver Final Exam 2023 with 100% correct answers
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Describing diving with the acronym SCUBA came from what event? 
The development of the demand regulator in 1943. 
 
 
 
Earplugs: 
Should never be worn while diving. 
 
 
 
If a flexible air-filled container has a volume of 40 cu ft on the surface, what would the volume be at 99 feet in sea water? (rounded off) 
10 cu 
 
 
 
Absolute pressure is defined as: 
The total pressure exerted on an object. 
 
 
 
The greatest relative pressure change in sea water takes place between ____ and ____ feet. ...
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SSI Science Of Diving Questions And Answers
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At an altitude of about 16,000 feet, the atmospheric pressure is approximately: 
1/18th the atmospheric pressure at sea level 
Equal to the atmospheric pressure at sea level 
Twice the atmospheric pressure at sea level 
One-half the atmospheric pressure at sea level - Answer- One-half the atmospheric pressure at sea level 
 
If the volume of a gas is kept constant, what varies directly with temperature? 
The pressure 
All answers are correct 
The mixing 
The volume - Answer- The pressure 
 
Our ...
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