# 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.

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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 Pressure Same air, Smaller space DepthPressureAir VolumeAir Density 0m/0ft1 bar/ata1x1 10m/33ft2 bar/ata1/2x2 20m/66ft3 bar/ata1/3x3 30m/99ft4 bar/ata1/4x4 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 Areas Do 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 BCD Low 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 2 nd Stage Altern ate 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 You A verrryyyy Happyy!!!!

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