Padi Open Water Chapter 1 questions and answers latest top score.

Padi Open Water Chapter 1 questions and answers latest top score. Positive Buoyancy - correct answers.The tendency of an object to float or rise in a fluid because the object weighs less than the fluid it displaces Neutral Buoyancy - correct answers.A condition in which an object's mass equals the mass it displaces in a surrounding medium. The object neither sinks nor floats. Negative Buoyancy - correct answers.The tendency of an object to sink in a fluid because the object weighs more than the fluid it displaces What equipment do you use to control your buoyancy - correct answers.BCD (buoyancy control device) & lead weights and also your lungs by breathing out (sink) and in (float) Salt water weighs more than fresh making you.. - correct buoyant Why do you usually only feel changes of pressure in your body air spaces - correct answers.Your body is primarily liquid, which is incompressible and distributes pressure equally throughout the body. Why are pressure changes while ascending or descending underwater much more substantial than pressure changes when doing the same in air - correct answers.Water is much denser and heavier than air, pressure changes much more significantly for a given distance ascent or descent. Air pressure at sea level is - correct answers.Standard Atmospheric Pressure 1 ata or 1 bar How many ata/bar do you add for every ten meters you descend under water - correct answers.1 ata/bar for each 10m/33ft you descend 10m/33ft 2 bar/ata 20m/66ft 3 bar/ata 30m/99ft 4 bar/ata What is the relationship between air volume and density - correct pressure increases volume decreases: at 10m/33ft you have 1/2 volume (2bar) at 20m/66ft you have 1/3 volume (3bar) at 30m/99ft you have 1/4 volume (4bar) what do you do to maintain air volume as you descend? - correct need to add air to the space to keep up with the volume reduction (equalization) if you added air to a space to maintain its volume while under pressure what happens to that air as the pressure decreases - as you ascend - correct air expands what two air spaces should concern you as a diver - correct & sinuses what is squeeze - correct answers.a pressure imbalance in which pressure outside an air space exceeds pressure inside an air space resulting in pain or discomfort (ears, sinuses, lungs, teeth can squeeze) how can you avoid discomfort from squeeze - correct air to the space during descent (equalization) lungs automatically equalize as you... - correct he! three ways to equalize during descent - correct answers.1. pinch nose and gently blow 2. swallow and wiggle jaw side to side 3. swallow, wiggle jaw and blow with nose pinched how often should you equalize during descent - correct meter/few feet before you feel any discomfort what can happen if you attempt a forceful equalization or extended equalization - correct red ear drum