Because compressing a gas increases its temperature. The increase in temperature increases the pressure further. By cooling the tank in water the tank can be filled with more air, it's also safer than having a very hot super high pressure tank at the end of the fill.
Lightning can be harmful to scuba divers because it can strike the water's surface and potentially electrocute anyone in the vicinity. Thunder, on the other hand, is not harmful to scuba divers but can indicate the presence of a thunderstorm, which can lead to dangerous conditions such as strong currents and rough seas. It is generally advised for divers to avoid entering the water during a thunderstorm or if lightning is present.
The average aluminum SCUBA cylinder holds 80 cubic feet of air at pressure. That means you are taking the equivalent of a closet's worth of air and smashing it into a cylinder much smaller than that. When full, the cylinder is at 3,000 pounds per square inch of pressure.When the valve is opened, it sends air into the (assumed) first stage regulator which is connected by hoses to gear such as two second stage regulators, instruments and your vest.So the SCUBA tanks don't so much USE the air so much as STORE the air at high pressures.
The noble lightweight being referred to is neoprene, a synthetic rubber material. Neoprene was instrumental in the success of Goodyear due to its use in wetsuits for scuba diving, helping divers stay warm underwater. Neoprene's properties also make it ideal for various medical applications, such as orthopedic braces and supports, enabling doctors to treat and help heal injuries effectively.
Scuba tanks are typically filled with compressed air, which is a mixture of oxygen and nitrogen. However, some scuba tanks may also contain a noble gas such as helium as part of a special gas mix called trimix, which is used for deep dives to reduce the risk of nitrogen narcosis.
The air mixture in scuba diving tanks is typically compressed air, which consists of about 21% oxygen and 79% nitrogen. This mixture allows divers to breathe at depth without experiencing adverse effects of high pressure.
The collective noun is a bubble of scuba divers.
scuba divers
Many people use a SCUBA suit for diving. Sport divers, police divers and some Navy recovery divers.
Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
They swim
seebees
In the Water....
Scuba - self contained underwater breathing apparatus
Scuba Bob's Ocean Quest - 2006 Fearless Divers Scuba Rangers 2-7 was released on: USA: 2007
Scuba regulators, also called 'diving regulators', are vital for scuba divers to properly obtain oxygen from a tank. Regulators are available for purchase through diving specialty stores such as Prime Scuba, House of Scuba, and Divers Direct.
Skin divers are people who dive into the ocean without using special equipment, unlike Scuba divers.
Like all adults or older teenagers; scuba divers need English and Maths also physics and scuba diving training. Hope I answered your question xx