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scuba
scuba 2020
| Question | Answer |
|---|---|
| examples of natural navigation aids divers use during dives include | sun brightness (available light)..bottom contours..ripple marks in the sand |
| atmospheric pressure at sea level is | 14.7 pounds per square inch/ 3.o atmospheres absolute |
| according to the NAUI RGBM tables, after the busy team in NAUI master course completes their two dives the team can dive to 30 fsw for 150 mins after: | a minimum of a 1 hour surface interval |
| the maximum dive time for a dive to 60 fsw on your first dive of the day is | 55 min |
| the absolute pressure in the ocean at 53 ft. deep | 2.6 atmospheres absolute |
| minimum surface intervals required by NAUI- RGBM no calculation sea level tables are: | one hour |
| all dives deeper than 30 ft require a safety stop at ___ for ____ | 15 fsw / 3 mins |
| A buddy team in a NAUI master scuba diver corse makes an ocean dive to 95 ft for 20 mins, after 1 hr and 20 mins surface interval they can make a dive to 65 ft for ____ mins or less | 40 mins |
| your first dive is to 60ft for 40 mins. You spend 1 hour and 40 mins on the surface. what is your maximum depth and bottom Time for the second dive. | 45 fsw for 80 mins |
| if a divers surface air consumption rate is 30 psi per min, what would be his/ her consumption rate at 66ft of sea water. | 90 psi per min |
| if you accidentally exceed your NDL by less than 5 mins, you must conduct a decompression stop at 15 fsw for: | 6 mins |
| a sealed ballon filled with air that has a volume of 6 cubic inches at 99ft will have a volume of ___ at 33ft. | 12 cubic inches |
| according to NAUI which of the following is essential to consider when planning a safe dive | one team members acts as the leader, agreement on the activity/ objective, set the course to be followed. discuss contingency plans and emergency procedures. |
| which is the most effective way to descend while maintaining orientation and attempting equalization of the ears | feet first |
| when making an emergency ascent, a scuba diver should | exhale continuously during the ascent periodically attempt to inhale |
| to render first aid for venomous fish wounds | flush the wound to clean, soak in hot water, obtain medical attention |
| three types of alternative air sources that are in common use today are | octopus rigs, completely redundant systems, and integrated regulator into the BCD inflation hose. |
| which of the following effects visibility | water movement, seasons, bottom compositions (all of these) |
| at a minimum while diving, most dive computers display | maximum depth, current depth, actual bottom time, remaining allowable bottom time. |
| three features that are common to all buoyancy control devices are | an overpressure relief valve, inflation/ deflation hose, low pressure inflation hose. |
| air, the gas most commonly used by recreational scuba divers, is composed of | 78% nitrogen / 21% oxygen / trace gasses |
| continued loss of body heat in cold water will produce | insensibility to pain / muscle cramps/ progressive immobility |
| an irregular breathing pattern (skip breathing) while diving will possibly cause... | carbon dioxide excess |
| which of the following are NAUI- sanctioned specialty corses | underwater photography / night diver / underwater ecologist |
| four main actions you should consider in giving first aid for diving accidents are | maintain basic life support/ call for help/ treat for shock/ deliver 100% oxygen |
| NAUI-RGBM , no calculation sea level tables allow dive three to be repeated until the cumulative time reaches the MDT for dive three | true |
| when rising a regulator it is best | to leave the regulator attached to the tank or keep the dust cap in place |
| a symptom of carbon monoxide poisoning is often | headache |
| the stage of the regulator which reduces tank pressure is the | first stage |
| which of the following causes objects to appear larger and closer when looking through a mask during a dive | refraction |
| three types of alternative air sources that are in common use today air | octopus rigs, completely redundant systems, an integrated regulator into the BCD, inflation/ deflation hose |
| essential features found on all Bcd's are: | 1.overpressure relief valve. 2. power inflation mechanism 3. inflation / deflation hose. |
| diving equipment should be | rinsed throughly and stored in a dark, cool, dry place |
| If you are diving wearing an exposure suit, you should _________to safely control buoyancy as you descend. | add air to your buoyancy device |
| If a diver's surface air consumption rate is 25 psi per minute, what would be the consumption rate at 66 feet of seawater? | 75 PSI |
| Currents which suddenly appear and disappear are | transitory |
| Sea water weighs | 64. 0 per cubic foot |
Created by:
clarevalente