PADI - Section 1 - Being a Diver

If I take a volume of air from one depth to another depth, how much will the volume and density change?

*to prevent an air space from stretching beyond its breaking point, leave it unsealed.

How does water create pressure?

........

What is the pressure range for each 10 meters /33 feet of depth change?

0m/0ft = 1 bar/ata 10m/33ft = 2 bar/ata 20m/66ft = 3 bar/ata 30m/99ft = 4 bar/ata 40m/132ft = 5 bar/ata

What is the weight of air at sea level?

1 bar or 1 ata

2. A depth change of 10 meters/ 33 feet causes a pressure change of ________________

1 bar/ata

3. If you take 6 liters of air from the surace to 20 meters / 66 feet, the volume will be ____ liters

2 liters

Are you under more or less pressure under water? Why?

More Water is denser and heavier than air *every 10m/33 ft of sea water exerts another atmosphere of pressure

What is the relationship between pressure, and the volume and density of air?

Pressure increases, gas volume decreases and density increases. Pressure and volume relationship affects all body air spaces. (ears, sinuses, mask, lungs)

Pressure

Pressure is exerted by the air in the atmosphere weight of air

Pressure, Air Volume, and Density

Water can't be compressed Volume and density don't change with pressure Pressure changes do change the volume and density of air

5. A balloon fully inflated and sealed at 10 metes/33 feet, would probably ____ during ascent to the surface.

burst

1. As you descend in water the pressure ________________

increases

4. The density of the air in the previous question would be ________ the density at the surface.

three times