SDI Computer Nitrox
True or False. Oxygen Enriched Air is a term some divers use to refer to Nitrox.correct answerTrue
The air we normally breathe consists primarily of:correct answerNitrogen and Oxygen
A mixture of nitrogen and oxygen in which the percentage of oxygen is greater than that found in air is generally called:correct answerEnriched Air, Enriched Air Nitrox, Nitrox, Etc.
The person who creates the Nitrox used to fill scuba cylinders is referred to as a:correct answerBlender
Which of the following is not a Nitrox mixture? EAN24, EAN21, EAN40correct answerEAN21
The primary benefits of using Nitrox include:correct answerLonger bottom times and shorter surface intervals
During any 24-hour period, you can be exposed to a Nitrox mixture at its Maximum Operating Depth (MOD) for up to:correct answer150 Minutes or 2.5 hours
True or False. Dive computers work by monitoring the presences of so-called 'silent bubbles using ultrasound.correct answerFalse
What may happen if you go too deep or stay too long?correct answerYou may not be able to make a direct ascent to the surface without substantially increasing your risk of decompression sickness and your dive computer may require you to make a series of decompression stops
A decompression stop is:correct answerPausing at a fixed depth for a specified period of time to allow excess nitrogen to exit you body more slowly To properly engage in decompression diving requires:correct answerSpecialized training, Additional equipment, and Topside support
Decompression sickness usually occurs when you have an excess amount of __________ in your body and you ________ too quickly.correct answerNitrogen, ascend
The most common symptoms of decompression sickness can include, but are not limited to:correct answerPain in the joints, Numbness and paralysis, and Loss of balance
The most important first-aid procedure for a diver suspected of suffering from decompression sickness is:correct answerAdministration of pure oxygen
Once a diver suspected of suffering from decompression sickness has been transported to a medical facility, proper treatment will primarily involve:correct answerRecompression in a hyperbaric chamber
What is the minimum concentration of oxygen required to maintain consciousness at sea level?correct answer16 percent
The maximum percentage of oxygen that sport divers use in a Nitrox mixture is:correct answer40 percent
What is the maximum recommended depth for using 100 percent oxygen?correct answer6 m/20 ft
The term EAN32 refers to a Nitrox mixture:correct answerIn which the Fraction of Oxygen (FO2) is 32 percent
The MOD for EAN32 is:correct answer40 m/132 ft
True or False. The term MOD stands for Maximum Operating Depth.correct answerTrue
True or False. Oxygen Enriched Air is a term some divers use to refer to Nitrox.correct answerTrue
The air we normally breathe consists primarily of:correct answerNitrogen and Oxygen
A mixture of nitrogen and oxygen in which the percentage of oxygen is greater than that found in air is generally called:correct answerEnriched Air, Enriched Air Nitrox, Nitrox, Etc.
The person who creates the Nitrox used to fill scuba cylinders is referred to as a:correct answerBlender
Which of the following is not a Nitrox mixture? EAN24, EAN21, EAN40correct answerEAN21
The primary benefits of using Nitrox include:correct answerLonger bottom times and shorter surface intervals
During any 24-hour period, you can be exposed to a Nitrox mixture at its Maximum Operating Depth (MOD) for up to:correct answer150 Minutes or 2.5 hours
True or False. Dive computers work by monitoring the presences of so-called 'silent bubbles using ultrasound.correct answerFalse
What may happen if you go too deep or stay too long?correct answerYou may not be able to make a direct ascent to the surface without substantially increasing your risk of decompression sickness and your dive computer may require you to make a series of decompression stops
A decompression stop is:correct answerPausing at a fixed depth for a specified period of time to allow excess nitrogen to exit you body more slowly To properly engage in decompression diving requires:correct answerSpecialized training, Additional equipment, and Topside support
Decompression sickness usually occurs when you have an excess amount of __________ in your body and you ________ too quickly.correct answerNitrogen, ascend
The most common symptoms of decompression sickness can include, but are not limited to:correct answerPain in the joints, Numbness and paralysis, and Loss of balance
The most important first-aid procedure for a diver suspected of suffering from decompression sickness is:correct answerAdministration of pure oxygen
Once a diver suspected of suffering from decompression sickness has been transported to a medical facility, proper treatment will primarily involve:correct answerRecompression in a hyperbaric chamber
What is the minimum concentration of oxygen required to maintain consciousness at sea level?correct answer16 percent
The maximum percentage of oxygen that sport divers use in a Nitrox mixture is:correct answer40 percent
What is the maximum recommended depth for using 100 percent oxygen?correct answer6 m/20 ft
The term EAN32 refers to a Nitrox mixture:correct answerIn which the Fraction of Oxygen (FO2) is 32 percent
The MOD for EAN32 is:correct answer40 m/132 ft
True or False. The term MOD stands for Maximum Operating Depth.correct answerTrue
