PADI Open Water Diver Certification questions well answered rated A+ 2023

PADI Open Water Diver Certification SCUBA - correct answer Self contained underwater breathing apparatus What is the pressure change for each 10m/33ft of depth change? - correct answer 1 bar/1 ata/1 atmosphere What is the relationship between my depth in water and the pressure? - correct answer The deeper you go in water, the more the pressure increases Pressure is expressed as the weight of air What is the relationship between pressure, and the volume and the density of air? - correct answer As pressure increases, the gas volume decreases and the gas density increases If I take a volume of air from one depth to another depth, how much will the volume and density change? - correct answer Volume will be 1/ata# Density will be ata# What 3 major body air spaces does increasing pressure affect as I descend? - correct answer Ears, sinuses, mask What is a "squeeze"? - correct answer The discomfort caused by pressure imbalance pulling tissue into the air space What is "equalization"? - correct answer The addition of air to your air spaces as you descend How do I equalize as I descend? - correct answer For ears and sinuses, pinch your nose and blow gently, or wiggle your jaw and swallow For mask, blow into it with nose How often should I equalize? - correct answer Every meter/few feet, BEFORE you feel discomfort What should I do if I can't equalize? - correct answer Stop your descent, signal problem and point to your ear, ascend a bit, and try again What can happen if I don't or can't equalize gently and keep descending? - correct answer Fluid can rupture the eardrum Bruising around the face can occur Why does a congestion from a cold or allergy temporarily keep me from diving? - correct answer Congestion might block normal air flow, making equalization difficult or impossible Why should I never dive with earplugs? - correct answer They create air spaces that you can't equalize What other body air spaces are affected by increasing pressure? How do I equalize them? - correct answer In filled teeth - go to a dentist In a dry suit - learn from an instructor Lungs - breathe normally and continuously What is the most important rule in scuba diving? - correct answer Breathe continuously and never hold your breath What can happen if I don't follow the most important rule in scuba diving? - correct answer Your lungs will over expand and rupture What is a "reverse block"? - correct answer When expanding air becomes trapped in your body air spaces as you ascend What should I do if I feel discomfort in my ears, sinuses, stomach, intestines, or teeth while ascending? - correct answer Stop your ascent and descend a meter/few feet to reduce discomfort and give trapped air time to work its way out