PADI Underwater Navigation and Buoyancy Control 2

Question 1

What is the primary function of a Buoyancy Control Device (BCD) during a dive?

Accepted Answer

To allow a diver to control buoyancy at any depth

Answer

A BCD allows a diver to add or release air to achieve neutral, positive, or negative buoyancy at any point during the dive.

Question 2

A diver who consistently sinks feet-first in the water likely has too much weight placed where?

Accepted Answer

On the weight belt at the hips or ankles

Answer

Excess weight on the hips or ankle weights pulls the lower body down, creating a feet-first or head-up angle that increases drag.

Question 3

What is the correct method to check if a diver is wearing the proper amount of weight before a dive?

Accepted Answer

Float at the surface with a full breath, eyes at water level, and a nearly empty tank

Answer

A diver is properly weighted when they float at eye level with a normal breath and a near-empty tank at the surface.

Question 4

Which technique helps a diver maintain neutral buoyancy when breathing during a dive?

Accepted Answer

Use a steady, controlled breathing rhythm and avoid breath-holding

Answer

Maintaining a slow, controlled breathing rhythm allows small buoyancy adjustments through lung volume without excessive BCD inflation.

Question 5

What should a diver do if they experience uncontrolled ascent due to over-inflation of the BCD?

Accepted Answer

Swim downward aggressively and dump air from the BCD immediately

Answer

The correct response to uncontrolled ascent is to immediately dump air from the BCD and use a flared body position while swimming downward to slow the ascent.

PADI - Professional Association of Diving Instructors Practice Test

PADI - Professional Association of Diving Instructors Practice Test

PADI Underwater Navigation and Buoyancy Control 2