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How do firefighters and scuba divers protect themselves from extreme temperatures?
The primary purpose of a "diving suit" is thermal protection. According to a study done by the University of Michigan, the average temperature of water near the ocean surface is about 17°C (62.6°F). This, coupled with the fact that water is a very good thermal conductor (it conducts heat away from your body about 22 times more efficiently than air) makes hypothermia one of the most significant risks to a Scuba diver. The primary purpose of a diving suit is to prevent this.
There are two general categories of diving suit in common use: the wet suit and the dry suit. The goal of both is the same. They're designed to keep you warm. A wet suit, usually made of neoprene, sometimes sandwiched between two layers of fabric, is open to the surrounding water. It operates by trapping a very thin layer of water between the diver's body and the thermally insulating neoprene. The diver's body quickly heats this thin layer of water, which then serves as a further thermal insulator.
Dry suits are exactly that: dry. Made of a variety of waterproof materials including crushed neoprene and rubber treated fabric, dry suits are fitted with water-tight cuffs and neck seals. Divers typically wear insulating underwear under dry suits. The underwear and the air trapped in the suit insulate the diver from the cold water.
In both cases, diving suits increase a diver's buoyancy by displacing water with either the neoprene suit itself or by the air trapped inside the suit. This is problematic in that it requires supplementary weight to compensate for the buoyancy to make the diver neutrally buoyant. Without supplementary weight, a diving suit wearing diver would not be able to descend in water.
A secondary benefit of both wet and dry diving suits is physical protection of the diver's skin against abrasion and attack by sea life such as jellyfish and coral. Divers diving in warm water often use thin lycra or spandex suits called dive skins. Dive skins provide minimal thermal protection but do provide a measure of physical protection.
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How do jellyfish protect young from extreme weather?
They don't protect their young they have to do it by themselves
One reason lunar astronauts wore spacesuits was to?
protect themselves from extreme temperatures, radiation, and micrometeoroids on the moon's surface.
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Firefighter uniforms are coated with melamine to make them heat-resistant and protect firefighters from high temperatures. Melamine helps to reduce the flammability of the fabric and can provide an additional layer of thermal protection in extreme heat situations.
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Temperatures can be very high endangering the spacecraft and the astronauts. Therefore, temperatures needed to be constantly monitored.
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Why do firefighters were gloves?
To protect their hands of course !
Why do Firefighters in the united kingdom wear yellow helmets?
Firefighters in the UK (and everywhere else) wear helmets to protect themselves. The color is chosen by the department that they are employed by, and can often be different colors to distinguish ranks among those in the fire service.
Is sweat a natural defense against extreme heat?
No, it keeps the body cool under the normal range of temperatures experienced on Earth, but would not protect you from the extreme heat of a fire.
How do people survive polar regions?
people survive by developing the technology to protect themselves from the extreme cold such as the inuvialuit.
Why does animals use outer coverings for?
They use outer coverings to protect themselves from injuries, cold temperatures etc.
Why can plants stand in coldness?
Plants function independent of temperatures except in extreme conditions when they are able to adapt themselves with the environment by the modification of the roots,shoots,stem,leaves etc/ or secreting resins to protect the outer layers which itself consists of sclerenchyma cells.
Can you go naked on Mars?
No, it is not safe to go naked on Mars due to its thin atmosphere, extreme temperatures, and high levels of radiation. Astronauts would need to wear specialized space suits to protect themselves from these harsh conditions.
