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Because pressure increases the further down you go. A unpressurized tank would collapse under this weight. Actually, the pressure in the tank is not to prevent it from crushing, but to allow it the diver to breathe. The greater the pressure in the tank, the greater the amount of breathing air you have available. As ambient pressure increases (ie by descending), your lungs require more air to fill them, as you are then breathing compressed air into your lungs. If you tried to breathe atmospheric pressure at depth, you could not fill your lungs. The deeper you go, the harder it is to breathe... Try breathing through a 6ft snorkel to the surface, and see how difficult it is to inhale. Therefore, the tank is pressurised, 1/ to allow you to breathe effortlessly at depth, 2/ to give you more time at depth, and 3/ to keep water out of the tank.
Wiki User
∙ 17y ago
Wiki User
∙ 14y agoIt's not the PRESSURE we want ... so much as the VOLUME we want. The average tank (which is probably 2-3 cubic feet) holds SEVENTY TWO to EIGHTY cubic feet of air. That will hold the air at 3,000 psi. Pressure is also important, because the water is pressing on the chest, so it requires a higher air pressure to be able to inflate the lungs under water. At 30 feet, for example, twice as much pressure is required as at sea level.
Wiki User
∙ 14y agoScuba divers require increased air pressures in their air tanks while diving because the pressure on their bodies increases.
Wiki User
∙ 12y agoThe deeper you go below the surface the more water there is above you pushing down on you.
Wiki User
∙ 12y agoI think the answer is there is no oxygen in underwater
Wiki User
∙ 11y agoThe weight of the water above you.
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What part of a diver's body might be hurt during a deep dive and why is this so?
During the deep dive the divers body goes through immense pressure. The atmospheric pressure in the deep as one goes more deep it increases so the lungs of the diver has to do more work and also that if the diver comes up on surface faster ten the rate he went down then the helim would be formed in the lungs of diver which can be lethal.
According to Boyle's Law if the volume and temperature of a gas in a closed container remain constantwhat happens to the gas's pressure?
It goes up.
Which shows a decrease in fluid pressure?
As Bernoulli Principle says, the fluid pressure decreases when speed increases. So if a river speeds up when it's narrowing down, the fluid pressure goes down.
What happens to volume if pressure remains the same and temperature goes up?
Volume increases! If pressure is kept constant then temperature and volume are directly related to each other.(Charle's law). It states that:V1/T1 = V2/T2
Why do deep-sea divers need to wear special suits?
A diver must rise to the surface of the water slowly because of the changing pressures and if they simply rose straight to the top from deep down their brain and body wouldn't be able to cope with trying to equalise the pressure and they would either die or end up with severe problems. It is a way of trying to get your body to equalise the pressure and realise the pressure is lessening. When you go under water, you are putting the amount of pressure of water and the pressure from the land on top of you, that is a lot of pressure to get your body used to. One of the issues was the Benz; which would have them driven mad by the suddenness of the changing pressures.
What part of a diver's body might be hurt during a deep dive and why is this so?
During the deep dive the divers body goes through immense pressure. The atmospheric pressure in the deep as one goes more deep it increases so the lungs of the diver has to do more work and also that if the diver comes up on surface faster ten the rate he went down then the helim would be formed in the lungs of diver which can be lethal.
Why do deep sea divers require greater protection than scuba divers?
The deeper the diver goes, the higher the pressure is.
Hoes does Boyles law effect the body when holding your breath?
Boyle's Law explains how the water pressure increases as you hold your breath. For example, the deeper a diver goes, the higher the pressure and the harder it is to hold your breath.
What happens to the temperature if the pressure of a gas increases?
The pressure increases.
When a gas is dissolved into a liquid what happens when the pressure increases?
More gas dissolves into the liquid.
When pressure increases temperature increases?
The temperature increases when pressure increases. This is according to the law of pressure. This law mentions that pressure is directly proportional to temperature.
How does pressure affect temperature?
as pressure increases, temperature increases
Does the water pressure increase the deeper a submarine goes?
Yes, the water pressure on a submarine increases as it goes deeper.
Why might a submarine be crushed if it sinks too low in the ocean?
Submarine hulls are subject to sea pressure, and that pressure increases the deeper the submarine goes. There are design limits to the amount of pressure that a hull can take, and if that pressure is exceeded by diving too deep, the hull will fail and will be crushed.
How much time does a scuba diver spend under water?
It depends on how deep the diver goes, and what air blend the diver is breathing. There are dive tables that state how long a diver can stay at a certain depth before requiring decompression. The basic recreational diver typically breathes either air or Nitrox. There are separate dives tables for air and Nitrox.
Why heart beat increases during faint?
because the pressure of our blood increases which goes to our heart and so when fainting the heart beat increases
What do you call someone who goes into water headfirst?
a diver
