PADI OPEN WATER EXAM STUDY GUIDE 2026/2027 QUESTIONS WITH CORRECT
ANSWERS VERIFIED ANSWERS
When is an object positively buoyant? - (answer)-When it displaces a volume of water weighing
more than its own weight.
When is an object negatively buoyant? - (answer)-When it displaces a volume of water weighing
less than its own weight.
When is an object neutrally buoyant? - (answer)-When it displaces a volume of water weighing
the same as its own weight.
Why two pieces of equipment do you use to control your buoyancy? - (answer)-BCD, Lead
weight
What does buoyancy help with when you are underwater? - (answer)-Controlling where you are
What does buoyancy help with when you are at the surface? - (answer)-Floatation, conserving
energy
How does the buoyancy of an object differ in fresh/salt water? - (answer)-More buoyant in salt
than fresh
When you exhale what happens? - (answer)-Lung volume decreases so you have less buoyancy.
When you inhale what happens? - (answer)-Lung volume increases so you have more buoyancy.
Why don't you feel air pressure? - (answer)-Your body is primarily liquid, which is
incompressible and distribute pressure equally throughout your whole body.
, Where are some air spaces located in the body? - (answer)-Ears, sinuses, lungs
Do you always feel the pressure in body air spaces? - (answer)-Only if the pressure is different
inside and outside the air spaces.
1 bar is what depth? - (answer)-0m/0ft
2 bar is what depth? - (answer)-33ft/10m
3 bar is what depth? - (answer)-66ft/20m
4 bar is what depth? - (answer)-99ft/30m
How is air volume affected when depth is increased? - (answer)-It decreases
How is air density affected when depth is increased? - (answer)-It increases
What happens if you take an air volume underwater with you in a flexible container or inverted
jar? - (answer)-As pressure increases the volume decreases, same air but smaller space.
How do you maintain air volume as you descend? - (answer)-Equalize
What is a "squeeze"? - (answer)-As volume decreases, pressure pushes body tissues inwards
toward air space, causing discomfort. Pressure outside air space is more than pressure inside air
space.
ANSWERS VERIFIED ANSWERS
When is an object positively buoyant? - (answer)-When it displaces a volume of water weighing
more than its own weight.
When is an object negatively buoyant? - (answer)-When it displaces a volume of water weighing
less than its own weight.
When is an object neutrally buoyant? - (answer)-When it displaces a volume of water weighing
the same as its own weight.
Why two pieces of equipment do you use to control your buoyancy? - (answer)-BCD, Lead
weight
What does buoyancy help with when you are underwater? - (answer)-Controlling where you are
What does buoyancy help with when you are at the surface? - (answer)-Floatation, conserving
energy
How does the buoyancy of an object differ in fresh/salt water? - (answer)-More buoyant in salt
than fresh
When you exhale what happens? - (answer)-Lung volume decreases so you have less buoyancy.
When you inhale what happens? - (answer)-Lung volume increases so you have more buoyancy.
Why don't you feel air pressure? - (answer)-Your body is primarily liquid, which is
incompressible and distribute pressure equally throughout your whole body.
, Where are some air spaces located in the body? - (answer)-Ears, sinuses, lungs
Do you always feel the pressure in body air spaces? - (answer)-Only if the pressure is different
inside and outside the air spaces.
1 bar is what depth? - (answer)-0m/0ft
2 bar is what depth? - (answer)-33ft/10m
3 bar is what depth? - (answer)-66ft/20m
4 bar is what depth? - (answer)-99ft/30m
How is air volume affected when depth is increased? - (answer)-It decreases
How is air density affected when depth is increased? - (answer)-It increases
What happens if you take an air volume underwater with you in a flexible container or inverted
jar? - (answer)-As pressure increases the volume decreases, same air but smaller space.
How do you maintain air volume as you descend? - (answer)-Equalize
What is a "squeeze"? - (answer)-As volume decreases, pressure pushes body tissues inwards
toward air space, causing discomfort. Pressure outside air space is more than pressure inside air
space.
