SCUBA {Ans: } Self contained underwater breathing apparatusWhat is the pressure change for each 10m/33ft of depth change? {Ans: } 1 bar/1 ata/1 atmosphereWhat is the relationship between my depth in water and the pressure? {Ans: } The deeper you go in water, the more the pressure increases Pressure is expressed as the weight of airWhat is the relationship between pressure, and the volume and the density of air? {Ans: } As pressure increases, the gas volume decreases and the gas density increasesIf I take a volume of air from one depth to another depth, how much will the volume and density change? {Ans: } Volume will be 1/ata# Density will be ata#What 3 major body air spaces does increasing pressure affect as I descend? {Ans: } Ears, sinuses, maskWhat is a "squeeze"? {Ans: } The discomfort caused by pressure imbalance pulling tissue into the air spaceWhat is "equalization"? {Ans: } The addition of air to your air spaces as you descendHow do I equalize as I descend? {Ans: } For ears and sinuses, pinch your nose and blow gently, or wiggle your jaw and swallow For mask, blow into it with noseHow often should I equalize? {Ans: } Every