AIDA 2 FREEDIVING Exam |
Questions with 100% Correct
Answers 2025/2026 Update |
Verified solutions
Course
AIDA
1. What is the primary goal of the AIDA 2 Freediver course?
A. Train divers to depths exceeding 40 meters
B. Introduce safe freediving techniques and fundamental theory
C. Certify scuba instructors
D. Train military divers
Answer: B. Introduce safe freediving techniques and fundamental theory
Solution:
AIDA 2 focuses on safe recreational freediving, proper breathing, equalization, buddy
procedures, and fundamental physiology.
2. What is the single most important safety rule in freediving?
A. Dive as deep as possible
B. Always dive with a trained buddy
C. Hold your breath until discomfort disappears
D. Wear the heaviest weights possible
Answer: B. Always dive with a trained buddy
Solution:
Freediving alone is dangerous. A trained buddy is essential to monitor dives and provide
assistance during emergencies.
,3. What is the primary stimulus to breathe during breath-holding?
A. Low oxygen levels
B. Increased carbon dioxide (CO₂)
C. Increased nitrogen
D. High blood pressure
Answer: B. Increased carbon dioxide (CO₂)
Solution:
The urge to breathe is primarily triggered by rising CO₂ rather than falling oxygen.
4. What is the purpose of equalization?
A. Increase lung volume
B. Balance pressure in the air spaces of the body
C. Improve swimming speed
D. Reduce heart rate
Answer: B. Balance pressure in the air spaces of the body
Solution:
Equalization prevents discomfort and injury by matching pressure in the middle ears and sinuses
to the surrounding water pressure.
5. Which equalization technique is generally taught first to beginners?
A. Mouthfill
B. Valsalva maneuver
C. Reverse packing
D. Glossopharyngeal breathing
Answer: B. Valsalva maneuver
Solution:
The Valsalva maneuver is commonly introduced first, although many freedivers later transition
to the more efficient Frenzel technique.
, 6. What happens to pressure as depth increases underwater?
A. Pressure decreases
B. Pressure remains constant
C. Pressure increases
D. Pressure disappears
Answer: C. Pressure increases
Solution:
Water pressure increases by approximately one atmosphere (1 ATA) every 10 meters (33 feet) of
seawater.
7. Why should a freediver avoid hyperventilating before a dive?
A. It increases oxygen dramatically.
B. It lowers carbon dioxide, delaying the urge to breathe and increasing blackout risk.
C. It strengthens the diaphragm.
D. It improves equalization.
Answer: B. It lowers carbon dioxide, delaying the urge to breathe and increasing blackout risk.
Solution:
Hyperventilation does not meaningfully increase oxygen stores but can suppress the urge to
breathe, increasing the risk of hypoxic blackout.
8. What is the mammalian dive reflex?
A. A panic response
B. Physiological adaptations that conserve oxygen during breath-hold diving
C. Increased body temperature
D. Increased breathing rate
Answer: B. Physiological adaptations that conserve oxygen during breath-hold diving
Questions with 100% Correct
Answers 2025/2026 Update |
Verified solutions
Course
AIDA
1. What is the primary goal of the AIDA 2 Freediver course?
A. Train divers to depths exceeding 40 meters
B. Introduce safe freediving techniques and fundamental theory
C. Certify scuba instructors
D. Train military divers
Answer: B. Introduce safe freediving techniques and fundamental theory
Solution:
AIDA 2 focuses on safe recreational freediving, proper breathing, equalization, buddy
procedures, and fundamental physiology.
2. What is the single most important safety rule in freediving?
A. Dive as deep as possible
B. Always dive with a trained buddy
C. Hold your breath until discomfort disappears
D. Wear the heaviest weights possible
Answer: B. Always dive with a trained buddy
Solution:
Freediving alone is dangerous. A trained buddy is essential to monitor dives and provide
assistance during emergencies.
,3. What is the primary stimulus to breathe during breath-holding?
A. Low oxygen levels
B. Increased carbon dioxide (CO₂)
C. Increased nitrogen
D. High blood pressure
Answer: B. Increased carbon dioxide (CO₂)
Solution:
The urge to breathe is primarily triggered by rising CO₂ rather than falling oxygen.
4. What is the purpose of equalization?
A. Increase lung volume
B. Balance pressure in the air spaces of the body
C. Improve swimming speed
D. Reduce heart rate
Answer: B. Balance pressure in the air spaces of the body
Solution:
Equalization prevents discomfort and injury by matching pressure in the middle ears and sinuses
to the surrounding water pressure.
5. Which equalization technique is generally taught first to beginners?
A. Mouthfill
B. Valsalva maneuver
C. Reverse packing
D. Glossopharyngeal breathing
Answer: B. Valsalva maneuver
Solution:
The Valsalva maneuver is commonly introduced first, although many freedivers later transition
to the more efficient Frenzel technique.
, 6. What happens to pressure as depth increases underwater?
A. Pressure decreases
B. Pressure remains constant
C. Pressure increases
D. Pressure disappears
Answer: C. Pressure increases
Solution:
Water pressure increases by approximately one atmosphere (1 ATA) every 10 meters (33 feet) of
seawater.
7. Why should a freediver avoid hyperventilating before a dive?
A. It increases oxygen dramatically.
B. It lowers carbon dioxide, delaying the urge to breathe and increasing blackout risk.
C. It strengthens the diaphragm.
D. It improves equalization.
Answer: B. It lowers carbon dioxide, delaying the urge to breathe and increasing blackout risk.
Solution:
Hyperventilation does not meaningfully increase oxygen stores but can suppress the urge to
breathe, increasing the risk of hypoxic blackout.
8. What is the mammalian dive reflex?
A. A panic response
B. Physiological adaptations that conserve oxygen during breath-hold diving
C. Increased body temperature
D. Increased breathing rate
Answer: B. Physiological adaptations that conserve oxygen during breath-hold diving
