1|Page
SDI OPEN WATER SCUBA DIVER EXAM 2025| BRAND
NEW ACTUAL EXAM WITH 100% VERIFIED
QUESTIONS AND CORRECT SOLUTIONS|
GUARANTEED VALUE PACK| ACE YOUR GRADES.
Objects under water appear - (answers)Closer and larger than they do on land
How much faster does sound travel in water, compared to air? - (answers)4 times
Water conducts heat away from your body - (answers)25 times faster than air
does
As you descend - (answers)colors fade, reds and oranges fade first, 30 meters
seem blue and gray
water temp does your body need thermal protection - (answers)86 degrees
What does SCUBA mean - (answers)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.
, 2|Page
4: Thermocline. - (answers)Thermocline
What is the primary cause of waves? - (answers)wind
Which of the following factors do we take into account when measuring waves? -
(answers)Height, Length
Which of the following is incorrect? - (answers)Waves are not hazardous to divers
during shore dives
The consequences of becoming cold under water include the following except -
(answers)improved judgment and coordination
Because sound travels faster under water: - (answers)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 -
(answers)true
which of the following are true - (answers)Surge is the back-and-forth movement
of water caused by passing over head
SDI OPEN WATER SCUBA DIVER EXAM 2025| BRAND
NEW ACTUAL EXAM WITH 100% VERIFIED
QUESTIONS AND CORRECT SOLUTIONS|
GUARANTEED VALUE PACK| ACE YOUR GRADES.
Objects under water appear - (answers)Closer and larger than they do on land
How much faster does sound travel in water, compared to air? - (answers)4 times
Water conducts heat away from your body - (answers)25 times faster than air
does
As you descend - (answers)colors fade, reds and oranges fade first, 30 meters
seem blue and gray
water temp does your body need thermal protection - (answers)86 degrees
What does SCUBA mean - (answers)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.
, 2|Page
4: Thermocline. - (answers)Thermocline
What is the primary cause of waves? - (answers)wind
Which of the following factors do we take into account when measuring waves? -
(answers)Height, Length
Which of the following is incorrect? - (answers)Waves are not hazardous to divers
during shore dives
The consequences of becoming cold under water include the following except -
(answers)improved judgment and coordination
Because sound travels faster under water: - (answers)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 -
(answers)true
which of the following are true - (answers)Surge is the back-and-forth movement
of water caused by passing over head
