SSI SCUBA Open Water Diving
Certification 2024/2025 Exam Questions
and Corresponding Answers with Surety
of 100% Pass Mark
The purpose of equalization is to - 🧠ANSWER ✔✔Introduce additional air
into body air spaces in response to increasing external pressure
Body heat is lost ________ than in air - 🧠ANSWER ✔✔25 to 30 times
faster
The absolute pressure expressed in terms of atmospheres absolute at 99
feet in salt water - 🧠ANSWER ✔✔4 ata
One atmosphere of pressure is defined as - 🧠ANSWER ✔✔- Each 34 feet
of depth in freshwater
- 1 ata
- Each 33 feet of depth in sea water
Describing diving with the acronym SCUBA came from what event? -
🧠ANSWER ✔✔The development of the demand regulator in 1943
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
, Sinus squeeze can be prevented by - 🧠ANSWER ✔✔Not diving with a cold
The greatest relative pressure change in sea water takes place between
___ and ___ feet - 🧠ANSWER ✔✔0 and 33
Underwater, the bending of light rays causes objects to appear to be: -
🧠ANSWER ✔✔closer
Ear squeeze can be prevented by: - 🧠ANSWER ✔✔- Relaxing
- Never diving with a cold
- Rotating the jaw, swallowing, or Valsalva
Earplugs... - 🧠ANSWER ✔✔should never been worn while diving
If you experience pain in your ears during descent: - 🧠ANSWER ✔✔Stop
the descent and ascend until the pain stops
Which of the statements concerning sound transmission underwater is
correct? - 🧠ANSWER ✔✔- Divers find it difficult to locate the direction of a
sound producing source
- Sound will travel farther underwater than in air
- Sound travels four times faster underwater than in air
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
Certification 2024/2025 Exam Questions
and Corresponding Answers with Surety
of 100% Pass Mark
The purpose of equalization is to - 🧠ANSWER ✔✔Introduce additional air
into body air spaces in response to increasing external pressure
Body heat is lost ________ than in air - 🧠ANSWER ✔✔25 to 30 times
faster
The absolute pressure expressed in terms of atmospheres absolute at 99
feet in salt water - 🧠ANSWER ✔✔4 ata
One atmosphere of pressure is defined as - 🧠ANSWER ✔✔- Each 34 feet
of depth in freshwater
- 1 ata
- Each 33 feet of depth in sea water
Describing diving with the acronym SCUBA came from what event? -
🧠ANSWER ✔✔The development of the demand regulator in 1943
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
, Sinus squeeze can be prevented by - 🧠ANSWER ✔✔Not diving with a cold
The greatest relative pressure change in sea water takes place between
___ and ___ feet - 🧠ANSWER ✔✔0 and 33
Underwater, the bending of light rays causes objects to appear to be: -
🧠ANSWER ✔✔closer
Ear squeeze can be prevented by: - 🧠ANSWER ✔✔- Relaxing
- Never diving with a cold
- Rotating the jaw, swallowing, or Valsalva
Earplugs... - 🧠ANSWER ✔✔should never been worn while diving
If you experience pain in your ears during descent: - 🧠ANSWER ✔✔Stop
the descent and ascend until the pain stops
Which of the statements concerning sound transmission underwater is
correct? - 🧠ANSWER ✔✔- Divers find it difficult to locate the direction of a
sound producing source
- Sound will travel farther underwater than in air
- Sound travels four times faster underwater than in air
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
