Overview of

Scuba Diving

Introduction

The members of Blue Group Lily, James, Malik, and Makena present to you a power point about a Chapter 1 Overview of Scuba Diving.

Well what’s in Chapter 1 again?

Well in Chapter 1 for example is Buoyancy, Air Pressure, Equalizing, and more!

Buoyancy

Negative

Neutral

Positive

If an objects floats, we call it positively buoyant; if it sinks, we call it negatively buoyant ; and if it neither floats nor sinks , we call it neutrally buoyant.

Air PressureSame air, Smaller

spaceDepth Pressure Air Volume Air Density0m/0ft 1 bar/ata 1 x110m/33ft 2 bar/ata 1/2 x220m/66ft 3 bar/ata 1/3 x330m/99ft 4 bar/ata 1/4 x4

If you take an air volume underwater with you in a flexible container or an an inverted jar, the volume changes proportionately with pressure.

Sinus AreasDo not Dive with congestion or sickness!

Equalize

+ -

The Ease to Breathe Using a snorkel

saves air in your tank when your on the surface.

Knowing your BCDLow Pressure Inflation

Inflation Hose

No O-ring, No Diving With no O-ring on a

Scuba tank your regulator will not seal.

Pointing out the Regulator

Pressure Gauge

2nd Stage

Alternate Air Source

First Stage

Scuba Pressure Gauge

A pressure gauge (or can be known as SPG or “contents gauge”) tells you how much air you have during a dive.

When your pressure gauge is in the red zone be sure to inform your instructor that you are low on air.

Buddy System

Thank YouA verrryyyy Happyy!!!!