Scuba Diving Quizzes Online & Trivia

The answer to this is letter A. Nitrox. This is a type of gas that is known to be a mixture of Nitrogen and Oxygen. The oxygen concentration of this is said to be higher as compared to the amount of oxygen that we can normally find in the atmosphere. A lot of tanks are filled with as much as 31% higher tanks. The use of this air can be effective in decreasing the absorption of nitrogen in our system. This is very effective if you would need to go to deeper parts of water without any issues. This will limit the possibility of suffering from the bends which are normally experienced by a lot of people who dive.

Look up, hold the top of the mask to the forehead, and exhale through the nose until the water is cleared gravity will force the water out the bottome of the mask. never look down

Correct answer is option D The best alternative place to carry air source in scuba diving is to attach to the triangle area between your chin and your chest. Placing the alternative air source between the chin and the chest ensures that an out or air diver will be able to approach any diver underwater, locate and efficiently secure an alternate air source. Other commonly acceptable positions to carry alternative air source are: attached to the Buoyancy Compensator (BC) on the Lower Left Hand side or Lower Right Hand Side and BC shoulder pocket.

When you are going to be participating in a SCUBA dive you must always have a plan set out for your dive. Going into the water without some sort of plan could be dangerous and even possibly fatal. Contingency SCUBA is characterized by bringing a completely independent SCUBA cylinder and regulator on your dive. Being prepared even if it might seem like over preparation can be very beneficial should anything go wrong on your dive or should you take more time on your dive than planned for.

Nitrogen bubbles. Decompression sickness alludes to the conditions caused by inactive nitrogen or different gases leaving arrangement and framing bubbles inside the body, these bubbles can piece blood stream and can cause different types of tissue damage. Nitrogen bubbles can cause mottling, lumps or a rash. "Skin bends", as they are casually named, are more typical amid hyperbaric chamber 'jumps' and when plunging utilizing a dry suit. Despite the fact that not generally in themselves genuine, skin side effects may show the nearness of issues somewhere else. An especially genuine cutaneous indication of DCS is 'cutis marmorata' marbling, in which a region of skin ends up pale with dim mottling. This is related with significant improvement of idle gas

So this is a good thing? I keep answering the wrong way and answering nitrogen. Read all the way through I guess is what I don't keep doing.

Hello McFly, there is 79% AIR in your tank. Air is comprised of about 21% O2.

I understand that this is what the instruction says... BUT this is a close one. Not every dive site needs tides, wave action, or even wind taken into account (e.g. springs diving). EVERY dive site needs an assessment of factors like water temperature and how the dive site conforms to the diver experience to determine if the dive is appropriate and safe.

Vertigo and dizziness while underwater will be the main characteristic of diving too deep and being subject to nitrogen narcosis.Pain on the surface after a dive could indeed be a side effect of middle ear trauma.The question is not specific enough and both 1 and 4 could apply. This is way too generic.

Fasten the dust cap over the inlet port to prevent moisture/debris from entering the regulator set

1. A quick release mechanismEvery weight system used by recreational divers must have a quick release that allows you to get rid of some or all of your weight with one hand in a single movement.(Note the reference to ´some´), you don´t necessarily have to drop all your weight, but just enough to assure that you can float comfortably.

Avoid the ladder zone if another diver is on or near the ladder Avoid clinging to the ladder to remove fins or adjust equipment Place both feet firmly on each rung when ascending the ladder