Question 1
How does the density of seawater compare to the density of freshwater, and what is its weight per unit volume?
Correct Answer:
Seawater is denser than freshwater, weighing 1.025 kg/liter (64 lbs/cubic foot).
Question 2
What is the absolute pressure (in atmospheres/bar) at a depth of 20 meters (66 feet) in salt water?
Correct Answer:
3.0 atmospheres absolute (ata)
Question 3
According to Boyle's Law, if a flexible container holds 12 liters of air at the surface, what will its volume be at a depth of 30 meters (99 feet) in seawater?
Correct Answer:
3 liters
Question 4
If a diver takes a breath from their scuba cylinder at a depth of 40 meters (132 feet) in seawater, how many times denser is the air in their lungs compared to the surface?
Correct Answer:
5 times denser
Question 5
A diver is breathing standard air (approximately 21% oxygen and 79% nitrogen) at a depth of 30 meters (99 feet) in seawater. What is the partial pressure of oxygen (PO2) at this depth?
Correct Answer:
0.84 ata
Question 1
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Prepare with the PADI Divemaster Theory Practice Questions - PADI Divemaster Dive Theory Examination Exam practice quiz. This question bank includes 100 questions covering diver, dive, depth, meters, and feet. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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PADI Divemaster Theory Practice Questions - PADI Divemaster Dive Theory Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on diver, dive, depth, meters, and feet. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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