Scuba Equipment Assembly & Function Flashcards
7 cards from real PADI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Scuba Equipment Assembly & Function flashcards as text
What is the standard color coding used for an alternate air source (octopus) second stage in recreational diving?
Answer: Yellow or bright orange
Bright yellow or orange coloring makes the alternate air source highly visible so a buddy can quickly locate it in an out-of-air emergency.
During a buddy check, your buddy's BCD inflates but does not deflate when the deflate button is pressed. What is the likely cause?
Answer: The deflate button or dump mechanism is stuck or disconnected
A stuck or mechanically disconnected deflate button prevents the exhaust valve from opening, trapping air in the BCD.
What does a visual cylinder inspection (VCI) sticker on a scuba tank indicate?
Answer: The interior was visually inspected for corrosion and damage within the past year
A valid VCI sticker shows the tank interior was inspected for rust, pitting, or debris within the last 12 months.
Why is it important to open a cylinder valve slowly before doing a full open?
Answer: Rapid opening can over-pressurize the regulator first stage
Opening the valve rapidly causes an adiabatic pressure spike that can damage O-rings and internal regulator components, and creates a fire risk with oxygen-enriched gases.
What is the primary advantage of an integrated weight system in a BCD over a traditional weight belt?
Answer: Weights can be jettisoned while keeping the BCD, and are less likely to slide out of position
Integrated weights stay properly positioned throughout the dive and can be released in an emergency while retaining the BCD for buoyancy.
After assembling scuba gear, a diver opens the tank valve and hears a brief hiss that stops immediately. What does this indicate?
Answer: Normal pressurization of the system as the regulator fills with air
A brief hiss as the regulator pressurizes is normal; a continuous hiss indicates a leak that must be addressed before diving.
What is the correct procedure if a diver discovers a cracked or brittle fin strap before a dive?
Answer: Replace the strap or use a different pair of fins before diving
A cracked fin strap can fail underwater, causing fin loss and making it difficult to swim; it must be replaced before the dive.