FREE Scuba Diving Open Water Question and Answers
A thing in water that doesn't float or sink is
When an object's average density is equal to the fluid it is submerged in, the condition is known as neutral buoyancy. In scuba diving, neutral buoyancy refers to the ability to balance with gravity without sinking or floating.
Decompression Sickness (DCS) is a condition that could be dangerous. What changes in the blood and tissues lead to DCS?
This condition, sometimes known as "the bends," is frequently fatal and is frequently neglected by divers. High partial pressures of nitrogen in the body's tissues cause the development of nitrogen bubbles, often known as "nitrogen narcosis," which impair the nervous system's ability to operate.
Back in the boat, you and your friend have exited the sea. Your friend passes out unexpectedly. What should you do right away?
You need to use special tables and procedures.
How frequently should you visually inspect your scuba tank?
Most SCUBA shops in the United States will demand a visual examination once a year, and they might do so if the tank is emptied below 500 PSI.
Where would you carry an octopus as a backup air source?
Octopus regulators, integrated air sources, and redundant scuba systems are the three most often used backup air sources. No matter whatever choice you make, it's crucial to put it at or close to your chest so your friend can quickly find and get it if necessary.
Sometimes what you see underwater appears _________ from what you would see on the surface.
When the eye is close to the surface of the water, objects in the water that are seen through a flat surface do appear magnified. This is common knowledge for anyone who has ever used a diving mask underwater. Rays entering the eye at an angle have gone via the air/water contact and have been refracted towards the eye when the flat water surface is close by.
As a newly certified Open Water Diver, how deep can you dive?
With a "Open Water Diver" certification from a diving organization like PADI or SSI, you can dive down to a maximum depth of 18 meters (60 feet).