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Humidity is the presence of water vapor in the atmosphere. The more water evaporates in a given area, the more water vapor rises into the air, and the higher the humidity of that area is. Hot places tend to be more humid than cool places because heat causes water to evaporate faster
It might sound like water evaporation is a bad thing. Liquid water is useful, plus, you know, essential for all life. Water vapor doesn’t seem like it’s useful for much of anything–other than making you uncomfortable. Believe it or not, though, water evaporation and humidity serve a critical function of the natural world. We couldn’t do without it!
When liquid water evaporates into gaseous water vapor, it has completed one third of the all-important water cycle. The water cycle is nature’s way of distributing water to things that need it. If water didn’t evaporate, we wouldn’t have clouds, and it would never rain!
What else can I help you with?
Why is it that it is uncomfortable during humid hot day?
Our body is cooled when our perspiration evaporates from the surface of our skin. On very humid days the atmosphere is already nearly saturated with moisture so little evaporation takes place. Therefore, we do not cool off and feel much warmer and uncomfortable.
Why does the evaporation of sweat cool your body on the warm day?
Evaporation is the vaporization that takes place only on the surface of a liquid. Evaporation takes up energy - and it takes up that energy from the warm surface of your skin. Thus, when sweat evaporates, it takes heat from your skin, cooling it.
Why wet clothes dry up very slowly in a humid air?
Wet clothes dry up slowly in humid air because the air is already saturated with moisture, so it has limited capacity to absorb more water vapor from the clothes. This leads to a decreased rate of evaporation, which is necessary for the drying process to occur.
Why is it more difficult to keep cool on a hot humid day then it is on a hot dry day even if the temperatures are the same?
There is a limit to how much water the air can hold. When the air cannot absorb any more water, the relative humidity is at 100%. The closer the air gets to 100% relative humidity, the less evaporation takes place. Evaporation of the sweat on our skin is what cools us on a hot day, because the process of evaporation is fueled by heat energy, so as sweat evaporates, it draws heat from our skin.
Why do people feel cooler on a hot dry day than on a hot humid day?
On a hot humid day the air circulation is heldup by the moisture density present in the air. the air gains weight and will not move . where as on a dry hot day the air is lighter and travels freely. * * * * * The air on a hot humid day holds much more moisture than on a hot dry day. As a result, your perspiration will evaporate much more quickly on a dry hot day and the process of evaporation will require heat equivalent to the latent heat of vaporisation. A lot of this heat will be taken from your body and that is why you will feel cooler.
Would you expect the temperature of the wet-bulb thermometer to be higher on a humid dry day?
On a dry day, water will evaporate from the wet bulb thermometer, cooling it. On a humid day, since moisture is already in the air, less will evaporate, and cool it less.
Can water cycle takes place during cloudy day?
The water cycle never stops. On overcast days, evaporation continues as the wind blows across the surface of the oceans.
Why it is uncomfortable during humid hot day?
Your brain makes you think you are uncomfortable when it is too hot, because excessive heat messes with some body functions. Sweating cools you down when your sweat evaporates, but if it is too humid, no evaporation occurs.
What is the evaporation percent from the oceans?
100% of the evaporation comes from the oceans
Will a wetbulb cool down more on a dry or humid day?
A wet bulb will cool down more on a dry day because the dry air has a greater capacity to absorb moisture, resulting in more evaporation from the wet bulb and therefore a greater cooling effect compared to a humid day where the air is already saturated with moisture.
Do we sweat more on a dry day or humid day justify your reason?
Humid day
Why a swimming pool is colder on a windy day?
On a windy day, the wind causes increased evaporation from the surface of the water in the pool. Evaporation is a cooling process, so as the water evaporates, it takes away heat from the remaining water, causing the overall temperature of the pool to drop. Additionally, the wind can also carry away heat more effectively from the surface of the water, making the pool feel colder.
