PADI Open Water Updated Actual Exam Question
and Answer (2026/2027) | Grade A+
• squeeze -✓✓ caused by greater pressure outside the air space than inside it, and
causes discomfort or injury by pressure balance that pushes tissues into an air
space
• ear squeeze -✓✓ pressure pushing your eardrum and surrounding tissues inward
• sinus squeeze -✓✓ discomfort in cheeks, central forehead, and along nose
• mask squeeze -✓✓ pulling or sucking sensation on face
• equalization -✓✓ keeping the pressure equal with outside pressure, so people stay
at their normal volume
• ears and sinuses -✓✓ to equalize ______ ______ __________: pinch your nose
and blow gently against it
• mask -✓✓ to equalize a _______: blow air through your nose as you descend
• as often as you can -✓✓ when should you equalize?
• stop; signal -✓✓ if you can't equalize, _______ your descent immediately, and
__________ your buddies or instructor
• gently -✓✓ how should you equalize?
, • breathe continuously and never hold your breath -✓✓ the most important rule of
scuba diving
• lung over-expansion -✓✓ what can occur from not following the most important
rule of scuba diving?
• reverse block (squeeze) -✓✓ results when expanding air becomes trapped in a
body air space
• slow/stop ascent; descend a meter (to reduce discomfort and give the trapped air
time to work its way out) -✓✓ what should i do if i feel discomfort in my ears,
sinuses, or mask?
• 1/2 -✓✓ how long does my air supply last at 10 meters/33 feet than at surface?
• 1/3 -✓✓ how long does my air supply last at 20 meters/66 feet than at surface?
• deep, slow breaths -✓✓ what type of breaths should you take when trying to
efficiently breathe dense air underwater?
• water displacement -✓✓ what causes buoyancy?
• positive buoyancy -✓✓ an object weighs less than the water it displaces; it floats
• negative buoyancy -✓✓ an object weight more than the water it displaces; it sinks
and Answer (2026/2027) | Grade A+
• squeeze -✓✓ caused by greater pressure outside the air space than inside it, and
causes discomfort or injury by pressure balance that pushes tissues into an air
space
• ear squeeze -✓✓ pressure pushing your eardrum and surrounding tissues inward
• sinus squeeze -✓✓ discomfort in cheeks, central forehead, and along nose
• mask squeeze -✓✓ pulling or sucking sensation on face
• equalization -✓✓ keeping the pressure equal with outside pressure, so people stay
at their normal volume
• ears and sinuses -✓✓ to equalize ______ ______ __________: pinch your nose
and blow gently against it
• mask -✓✓ to equalize a _______: blow air through your nose as you descend
• as often as you can -✓✓ when should you equalize?
• stop; signal -✓✓ if you can't equalize, _______ your descent immediately, and
__________ your buddies or instructor
• gently -✓✓ how should you equalize?
, • breathe continuously and never hold your breath -✓✓ the most important rule of
scuba diving
• lung over-expansion -✓✓ what can occur from not following the most important
rule of scuba diving?
• reverse block (squeeze) -✓✓ results when expanding air becomes trapped in a
body air space
• slow/stop ascent; descend a meter (to reduce discomfort and give the trapped air
time to work its way out) -✓✓ what should i do if i feel discomfort in my ears,
sinuses, or mask?
• 1/2 -✓✓ how long does my air supply last at 10 meters/33 feet than at surface?
• 1/3 -✓✓ how long does my air supply last at 20 meters/66 feet than at surface?
• deep, slow breaths -✓✓ what type of breaths should you take when trying to
efficiently breathe dense air underwater?
• water displacement -✓✓ what causes buoyancy?
• positive buoyancy -✓✓ an object weighs less than the water it displaces; it floats
• negative buoyancy -✓✓ an object weight more than the water it displaces; it sinks
