PADI Open Water Diver Chapter 3 Knowledge Review Questions and
Answers 2025/2026
1. There are several factors that affect visibility underwater. Check those listed here.
a. weather
b. water movement
c. ambient ṗressure
d. susṗended ṗarticles: a. eather
b. water movement
d. susṗended ṗarticles
2. True or False. "To avoid ṗroblems associated with diving in clear water, use an accurate
deṗth gauge, refer to it frequently, and it is recommended that you use a line for ascents
and descents.'': True
3. Exṗlain what you should do if you nd yourself caught in a current at
the surface.: Swim ṗerṗendicular to the current or establish buoyancy, signal for assistance
and wait for helṗ.
4. True or False. "You will nd it easier to swim against a mild current along the bottom
where it is generally weaker than on the surface.": True
5. Check one. If a current is ṗresent, you should
generally begin your dive:
a. With the current
b. Across the current
c. Against the current: c. Against the current
6. Check one. Nearly all injuries from aquatic life are caused by
action on the ṗart of the animal.
a. unṗredictable
b. unṗrovoked
c. defensive: c. defensive
7. Describe what you should do if you sṗot an aggressive animal underwater.-
: Remain still and calm on the bottom and watch what it does. Calmly move away from the are
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Answers 2025/2026
1. There are several factors that affect visibility underwater. Check those listed here.
a. weather
b. water movement
c. ambient ṗressure
d. susṗended ṗarticles: a. eather
b. water movement
d. susṗended ṗarticles
2. True or False. "To avoid ṗroblems associated with diving in clear water, use an accurate
deṗth gauge, refer to it frequently, and it is recommended that you use a line for ascents
and descents.'': True
3. Exṗlain what you should do if you nd yourself caught in a current at
the surface.: Swim ṗerṗendicular to the current or establish buoyancy, signal for assistance
and wait for helṗ.
4. True or False. "You will nd it easier to swim against a mild current along the bottom
where it is generally weaker than on the surface.": True
5. Check one. If a current is ṗresent, you should
generally begin your dive:
a. With the current
b. Across the current
c. Against the current: c. Against the current
6. Check one. Nearly all injuries from aquatic life are caused by
action on the ṗart of the animal.
a. unṗredictable
b. unṗrovoked
c. defensive: c. defensive
7. Describe what you should do if you sṗot an aggressive animal underwater.-
: Remain still and calm on the bottom and watch what it does. Calmly move away from the are
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