Equipment Knowledge

Select an answer for every question, then review your results.

0 of 12 answered

1. What is the function of a regulator first stage? Store reserve oxygen Reduce cylinder pressure to an intermediate pressure Measure underwater visibility Inflate a drysuit without a hose

2. What is a common purpose of an alternate air source? Measure water temperature Provide an emergency gas-sharing option Replace a depth gauge Clean sediment from the mask

3. Why should cylinder valves and connections be inspected before a dive? To change the cylinder alloy To detect potential leaks and equipment issues To increase the gas oxygen percentage To reset the compass

4. What is the purpose of a pressure gauge or integrated pressure sensor? Determine water salinity Provide information about remaining cylinder pressure Replace a buddy check Measure actual breathing rate directly

5. What should you do with a regulator that is breathing unusually? Continue diving until it fails Have it evaluated by a qualified service professional Lubricate it with household oil Increase cylinder pressure beyond its rating

6. Why are equipment manufacturer service intervals important? They eliminate user inspections They guide inspection and maintenance appropriate to the design They guarantee no failure can occur They apply only to rental equipment

7. What should you check on a mask before entry? The mask brand alone Fit, strap condition and seal Whether its lens is darker than your buddy’s Whether it has a camera mount

8. What should you verify on a scuba cylinder before filling? Only the sticker color Required inspection status, markings and suitability Only the carrying handle Whether it matches your fins

9. What is the main role of a BCD? Supply decompression gas automatically Allow controlled buoyancy adjustments Measure compass bearings Prevent mask fogging

10. Why do divers rinse suitable gear in fresh water after saltwater diving? To change the gear certification To remove salt and contaminants according to manufacturer instructions To increase the cylinder working pressure To replace all scheduled service

11. Why should hoses and connections be routed neatly? To increase dive depth limits To reduce snagging and improve access To hide the pressure gauge To make the cylinder buoyant

12. What is a useful pre-dive check for a dive computer? Only the case color Battery status, settings and correct operating mode Whether its screen matches your buddy’s Whether it has a lanyard

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