Buoyancy Skills

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0 of 14 answered

1. When ascending, air in a BCD generally:CompressesExpandsTurns into liquidStays the same volume

2. Which action helps protect fragile reef life?Resting on coralMaintaining neutral buoyancy and trimDragging fins on the bottomGrabbing animals

3. What happens to trapped gas in a BCD during ascent?It becomes denser and smallerIt expands as ambient pressure decreasesIt turns to liquidIts volume remains unchanged

4. Which technique reduces accidental contact with reef habitat?Kneel on coral during pausesMaintain neutral buoyancy and horizontal trimDrag fins across the seabedUse marine life as a handhold

5. What should you do when your BCD begins lifting you too quickly?Add more gas to the BCDUse trained buoyancy control to vent expanding gasInflate your surface marker inside the BCDIgnore the ascent rate

6. Why is correct weighting important?It allows you to skip buoyancy checksIt supports proper control with less unnecessary effortIt eliminates the need for a BCDIt guarantees a fixed depth

7. Why might a diver add a little BCD gas during descent?To empty the cylinderTo offset increasing negative buoyancy from compressionTo change compass headingTo replace equalization

8. Which situation suggests a diver may be overweighted?Achieving comfortable horizontal trimNeeding excessive BCD inflation to become neutralMaintaining depth with small correctionsCompleting a controlled ascent

9. How do small, calm fin movements help buoyancy control?They replace the need for breathing gasThey reduce disturbance and unwanted depth changesThey prevent all currentsThey make weighting unnecessary

10. Why can breathing influence short-term depth changes?Breathing changes the water salinityLung volume changes a diver’s displacementLungs are connected to the BCDExhaling adds gas to the suit

11. What is a good environment for practicing buoyancy skills?A deep wreck beyond trainingA controlled setting with appropriate supervisionAn exposed site in strong currentAn unfamiliar overhead environment

12. What is one benefit of streamlined gear?More uncontrolled ascent speedLess drag and fewer dangling itemsAutomatic gas sharingLess need for a buddy

13. When should a diver perform a weighting check?Only after the last dive of a tripWhen gear, exposure protection or conditions changeOnly when the cylinder is empty underwaterNever when certified

14. Which observation is useful during buoyancy practice?Whether you can touch the bottom oftenWhether you can hover without using your handsWhether your camera has extra memoryWhether your buddy swims quickly

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