PADI DIVEMASTER FINAL EXAM -
VERSION A QUESTIONS AND ANSWERS
1. What is the primary role of a Divemaster when supervising certified divers?
A. To provide technical training and certification
B. To enforce local maritime laws and regulations
C. To act as the primary rescuer in all underwater emergencies
D. To manage the dive logistics and enhance diver safety through risk assessment
Answer: D
Conceptual Explanation: A Divemaster focuses on dive management, logistics, and safety
coordination, whereas instructors focus on training.
2. According to Archimedes’ Principle, an object will float if:
A. Its volume is less than the surrounding fluid
B. It weighs more than the water it displaces
C. It weighs less than the water it displaces
D. The density of the object is greater than the density of the fluid
Answer: C
,Conceptual Explanation: Archimedes’ Principle states that an object is buoyed up by a
force equal to the weight of the fluid it displaces; thus, if it weighs less than that fluid, it
floats.
3. If a diver consumes 2 bar/min at the surface, what will their consumption be at 30 meters
(99 feet) in salt water?
A. 4 bar/min
B. 8 bar/min
C. 6 bar/min
D. 10 bar/min
Answer: B
Conceptual Explanation: At 30m, the total pressure is 4 ATA. Consumption rate is surface
rate multiplied by total pressure: 2 bar/min * 4 = 8 bar/min.
4. Which of the following describes the ‘Squeeze’ in diving physics?
A. The reduction in volume of a gas space due to increasing external pressure
B. Expansion of air in a body cavity during ascent
C. The increase in nitrogen absorption at depth
D. The physical constriction of a wetsuit at depth
Answer: A
, Conceptual Explanation: A squeeze is caused by the pressure differential when the
external pressure increases and the gas volume in a body space decreases (Boyle’s Law).
5. What is the partial pressure of Oxygen (PO2) in air at a depth of 40 meters (132 feet) in salt
water?
A. 0.21 ata
B. 1.05 ata
C. 0.84 ata
D. 1.26 ata
Answer: B
Conceptual Explanation: At 40m, the pressure is 5 ATA. Air is 21% oxygen. 5 * 0.21 = 1.05
ATA.
6. Which law states that at a constant temperature, the volume of a gas varies inversely with
the pressure?
A. Dalton’s Law
B. Henry’s Law
C. Boyle’s Law
D. Charles’ Law
Answer: C
VERSION A QUESTIONS AND ANSWERS
1. What is the primary role of a Divemaster when supervising certified divers?
A. To provide technical training and certification
B. To enforce local maritime laws and regulations
C. To act as the primary rescuer in all underwater emergencies
D. To manage the dive logistics and enhance diver safety through risk assessment
Answer: D
Conceptual Explanation: A Divemaster focuses on dive management, logistics, and safety
coordination, whereas instructors focus on training.
2. According to Archimedes’ Principle, an object will float if:
A. Its volume is less than the surrounding fluid
B. It weighs more than the water it displaces
C. It weighs less than the water it displaces
D. The density of the object is greater than the density of the fluid
Answer: C
,Conceptual Explanation: Archimedes’ Principle states that an object is buoyed up by a
force equal to the weight of the fluid it displaces; thus, if it weighs less than that fluid, it
floats.
3. If a diver consumes 2 bar/min at the surface, what will their consumption be at 30 meters
(99 feet) in salt water?
A. 4 bar/min
B. 8 bar/min
C. 6 bar/min
D. 10 bar/min
Answer: B
Conceptual Explanation: At 30m, the total pressure is 4 ATA. Consumption rate is surface
rate multiplied by total pressure: 2 bar/min * 4 = 8 bar/min.
4. Which of the following describes the ‘Squeeze’ in diving physics?
A. The reduction in volume of a gas space due to increasing external pressure
B. Expansion of air in a body cavity during ascent
C. The increase in nitrogen absorption at depth
D. The physical constriction of a wetsuit at depth
Answer: A
, Conceptual Explanation: A squeeze is caused by the pressure differential when the
external pressure increases and the gas volume in a body space decreases (Boyle’s Law).
5. What is the partial pressure of Oxygen (PO2) in air at a depth of 40 meters (132 feet) in salt
water?
A. 0.21 ata
B. 1.05 ata
C. 0.84 ata
D. 1.26 ata
Answer: B
Conceptual Explanation: At 40m, the pressure is 5 ATA. Air is 21% oxygen. 5 * 0.21 = 1.05
ATA.
6. Which law states that at a constant temperature, the volume of a gas varies inversely with
the pressure?
A. Dalton’s Law
B. Henry’s Law
C. Boyle’s Law
D. Charles’ Law
Answer: C
