Scuba Diving Final Exam (2025) comprehensive
questions and verified answers ( detailed &
elaborated) ACTUAL EXAM 2025 TEST!!
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What will the buoyancy a. positive
of an object be (positive, b. negative
neutral, or negative) if it c. neutral
displaces an amount of
water:
a. more than its own
weight?
b. less than its own
weight?
c. equal to its own
weight?
How does the buoyancy Because salt water weighs more than fresh water, it
of an object differ in causes more buoyancy (more upward force)
fresh water compared to
salt water.
What is the relationship With increasing depth the water pressure increases.
between increasing and With decreasing depth the water pressure
decreasing depth and decreases.
water pressure?
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, 2/21/25, 8:37 AM Scuba Diving Final Exam (2025) comprehensive questions and verified answers ( detailed & elaborated) ACTUAL EXAM 2025 …
What are the absolute a. 2 bar/ata, 1/2, x 2
pressures, air volume, b. 3 bar/ata, 1/3, x 3
and air density in c. 4 bar/ata, 1/4, x4
atmospheres, for: d. 5 bar/ata, 1/5, x5
a. 10m/33ft
b. 20m/66ft
b. 30m/99ft
c. 40m/132ft
What is the relationship Air volume and density change proportionately with
between air volume and pressure. As pressure increases, air volume
density, and how do they decreases, and air density increases. As pressure
vary according to this decreases, air volume increases, and air density
relationship when decreases.
pressure increases or
decreases?
A pressure imbalance that pushes tissues into an air
What is a "squeeze"?
space.
What is "equalization"? The process of adding air to an air space.
What are the three ways 1. pinch your nose and blow gently against it
you can equalize air 2. wiggling your jaw side-to-side and swallowing
spaces during descent? 3. blow air into mask through your nose
How often should you Frequently
equalize during descent?
What three steps should 1. stop your descent
you take if you feel 2. signal your buddy(ies)
discomfort in an air space 3. ascend slightly until the discomfort passes and try
while descending? again
What is the most to breathe continuously and never, ever hold your
important rule in scuba breath
diving?
What are the lung overexpansion injuries
consequences of
breaking the most
important rule in scuba
diving?
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