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DIVINGTECH
| Question | Answer |
|---|---|
| Pressure exerted by the water mass is called _________ pressure | hydro |
| Total pressure is called _____________ pressure | ambient |
| The human bodes is adapted to __ atmosphere of pressure | 1 |
| A fish swims 40 meters. How many atmospheres of pressure is the fish experiencing at this depth? | 5 |
| 1 atmosphere of pressure equals ___ meters | 10 |
| What body part would be the first to feel the effects of pressure? | ears because of air pockets |
| Pressure effects on delicate membranes in the ears and sinuses can cause sensation that divers call_______ To avoid pain and damage to their eardrums divers must_________ | squeezes equalize |
| What can happen as a result of a scuba diver holding his or her breath as he or she ascends...... | air embolism |
| What happens to a fish that is at 200 ft if it quickly hauled to the surface? | swim bladder will expand beyond normal size and burst |
| Can a snorkeler or skin diver get an air embolism on ascent? | No- not breathing compressed air if holding breathe their lungs are compressed and on ascent they expand back to normal size |
| Why the body of a scrub diver underwater is much like soda bottled under pressure? | When you open a bottle it forms bubbles and releases pressure |
| Which mammal can dive the deepest and stay down the longest? | sperm whale |
| What 3 pierces pf equipment are important for a skin diver? | mask, snorkel, fin |
| A skin diver would most likely use a ___ volume mask while a scuba diver would most likely use a ___ volume mask | low high |
| The snorkel is always worn on the _____ side | left regulator on right |
| What is the advantage of a high volume mask? | better vision; wider angle |
| When a divers work at depths that exceed the safety limits, it is better to breathe mixed air. This is done by replacing nitrogen with ____ | Helium |
| Occasionally during descent, air compressed inside a diving mask causes a pulling sensation on a divers eyes. What causes this to occur? | pressure of water on outside of mask is greater than pressure on inside and you equalize it by blowing air. |
| As a skin diver descends the lungs will..... while a scuba divers lungs will...... | compress remain normal |
| A diving injury associated with pressure is called............ | baratrauma |
| Nitrogen Narcosis is also called ________________ Why? | rapture of the deep effects feel intoxicated |
| What is the purpose of the mask? | surround eyes with pockets of air so see clearly |
| The ____ increase the power of foot | fin |
| The demand _______ will adjust air flow so that the air is at the same pressure as the surrounding water | regulator |
| What piece of equipment will help the scuba diver achieve neutral buoyancy? | B.C |
| The weight belt will_____________ the buoyancy of the wetsuit | counteract |
| A scuba diver will need more weight in______ water | salt |
| When should a scuba diver begin his or her ascent? | 500 psi |
| List at least 3 examples of accessory equipment used by a scuba diver? | compass knife light watch |
| What is saturation diving what is the advantage? | Diving in an environment in which the diver never changes pressure but fully saturated body ex underwater habitat |
| Which body type will need more weight? | higher % of body fat |
| What must a person have in order to rent a scuba tank? | certificate card |
| What can occur if a scuba diver ascends too quickly or hold their breth | an air embolism |
| what is acronym SCUBA stand for? | self contained underwater breathing |
Created by:
murphy1717