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Humid Air.
Humidity is the amount of water vapor (Water vapor is the same thing as water gas.) that is in the air. (When one speaks of how humid air is or the humidity in air, one does not count water in the form of droplets, such as the droplets in fog or in a cloud or in steam.)
We say the air is humid if there is a lot of water vapor in the air. When there is very little water vapor, then we say the air is dry or it is not humid or we say the humidity is low.
Dry air consists of approximately 78% nitrogen, 21% oxygen, 1% argon, .04% carbon dioxide. Besides those gasses, there is another .04% of hydrogen, methane, neon, krypton and other naturally occurring gases. (These are percent by volume, not by weight.) This is a remarkably uniform mixture the world over although the carbon dioxide content has been increasing.
The amount of water in the air varies greatly with the average being about 1% by volume. At a normal temperature, for instance 25 C (about 77 F) the air can not hold more than about 4%. (In a kilogram of air, at 25 C, the maximum amount of water is 2 grams.)
This means that there is always more nitrogen and oxygen in the air than there is water, even when it is raining.
There is no particular amount of water in the air that decides whether one says the air is humid or dry.
Because the amount of water vapor that can be in the air depends very much on temperature and pressure, one can not make a general statement about how much water is contained in humid air.
Humidity as a number:
To be very precise about the quantity of water in air one usually speak of absolute humidity and relative humidity. Absolute humidity is defined as the number of grams of water per cubic meter of air and that number typically varies from zero to about 30 grams. Relative humidity is defined as the percent of water in the air compared to the maximum amount of water that the air could contain at the same temperature and pressure. Thus, relative humidity varies from zero to 100 percent and what constitutes 100% varies a great deal with temperature and pressure.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoHumid air is relatively full of water. All air has some water content, but increased temperature and other atmospheric activity raises the relative humidity.
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Moisture will form faster on a glass when?
When the air is humid and the glass is cold.
In the doldrums where surface winds from two hemispheres meet there is?
hot, humid air with little or no wind
What is condensation?
Water which collects as droplets on a cold surface when humid air is in contact with it.
What is the difference between a water balloon and a normal balloon?
A water balloon is filled with water, and other balloons are filled with air or helium.
When you fill me still i look empty what am i?
A glass jar filled with air
Humid air is filled mostly with?
The difference between humid and dry air is the amount of water vapour held in the air "water vapor"Humid implies wet. Humid air is largely filled with water particles.
What is himid air mostly filled with?
Humid air contains a high content of water vapor, as well as the other gases normally found in air.
Is a hot air balloon filled with nitrogen?
It is filled with heated air. Since air is mostly nitrogen, a hot air balloon is mostly filled with nitrogen.
What is humid mostly filled with?
At 30oC, there is 30g of water per cubic meter of air at 100% relative humidity (1). 30g is about 1/8th the amount of liquid in a normal soft drink can, or about the volume of 1 gulp. A cubic meter will hold over 33,000 of the same 30g gulps of water..So the correct answer is: humid air is almost entirely filled with nothing, and then a very small fraction of that air is filled with water..(1) Source: http://en.wikipedia.org/wiki/Humidity
Underground region in which pores are filled mostly with air?
zone of saturation
What is the difference between hot humid and cold humid air?
If it is hot humid air, the air will be filled with a lot of moisture, and your hands feel all sticky and when you breathe, the air feels thick. But when it's cold humid air, the air has less moisture and it may feel easier to breath in. But it still has the same humidity as the hot air, you just feel it different. This is because when you say the air is humid, you are basically saying that the air has moisture in it. But the air always has moisture in it, but you can feel it when there is high humidity. So when it is cold air, you feel the humidity less. Because if it is hot air, that means the sun must be out, and when the sun is out, it evaporates the sweat and moisture off your skin and goes into the air. That is why in a crowded room, we describe the air as 'stuffy' because it is filled with the body heat from all the people in the room. I hope I answered your question properly. :)
Which is normally more dense dry air or humid air?
Humid air is more dense.
How are dry air and humid air different?
Humid air has more water vapor mixed in it than dry air has.
Why are Dorito's bags filled mostly with air?
to keep the chips from being crushed during shipping
Explain why a ship that is mostly made of metal float on the water?
It displaces water and is filled with air.
What is saturating the air when the weather is humid?
Moisture (water droplets) is saturating the air when the weather is humid.
In humid weather why you have more sweating?
We seem to 'sweat more' on a humid day because as the air is already packed with water molecules, our sweat does not get a chance to evaporate as fast as it would in dry air. So as there is 'no room' for sweat to be absorbed into the water-filled air, which is what humidity is, the sweat just remains a liquid and drips down instead....
