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It starts from 100 celcius in 1atm and can be risen further.
At lower pressures eg on tops of mountains, it can be lower. Water boils when the pressure of water vapour exceeds the external atmospheric pressure. Below that, any bubble of water vapour which might start to form is immediately compressed back to liquid.
What else can I help you with?
Is water vapour not one of the constituents in air?
Water vapour is a constituents in air because water vapour rises in the atmosphere & is always present in the atmospere in some or the other quantity.Also 0.0001% of air consist water vapour
Why is it only foggy in the morning?
Because the Dew point (Water Vapour) is lower near the surface, due to the low temperature.
What is the term for when water rises up to form clouds?
evaporation is when water vapour rises up and condensation is when water vapour turns into clouds
Can water vapour condense on tree?
Yes, water vapor can condense on trees when the temperature of the tree surface is cooler than the dew point temperature of the air. This can happen during cool nights or when trees are shaded from the sun. The condensed water droplets appear as dew on the tree's surface.
What is the another name for water vapour?
Steam.
What is the major factor affecting the amount of water vapour?
The major factor affecting the amount of water vapour is temperature.
What is the gas stage of water called?
At high temperature the gas stage of H2O is steam and at low temperature it is water vapour
Relative humdity is a ratio of what?
The mass of water vapour in a given quantity of air to the maximum mass of water vapour that it could hold - at the specific temperature and pressure.
What is one stage of evaporation?
heating of water by the sun's energy which increases the temperature of the water causing some of the water to turn into water vapour at a temperature below the water's boiling point temperature.
Does temperature increase or decrease when going from liquid to gas?
The temperature decreases as the gas (vapour) turns back into a liquid. For instance, the hot water vapour from a kettle can be cooled so as to condense back into water.
How does water go to the air?
Water turn into a gas called water vapour. The air depending on its temperature will hold a certain amount of this. when the air comes into contact with water if the humidity of the air is such that it can hold more water vapour then the water that is touching the air will turn into the gas water vapour and become part of the air. it will do this at any temperature which explains why you can hang clothes out to drying sub zero temperatures and they dry.
Is water vapour not one of the constituents in air?
Water vapour is a constituents in air because water vapour rises in the atmosphere & is always present in the atmospere in some or the other quantity.Also 0.0001% of air consist water vapour
What is the Difference between airs and gases and water vapour?
Air is the mixture of different gases (like oxigen, nitrogen, co2 e.t.c.) & water vapour. Gases are only gases, here is no water vapour. And water vapour is form after the vapourization of water at high temperature.
How humid would it be if the temperature is fifteen degrees?
The answer depends on the amount of water vapour in the air.
What is occurring when you can see your breath on cold days?
The air that you exhale contains water vapour. When you exhale during a cold day, the relative humidity increases. Relative humidity is actually the percentage of the amount of water vapour in the air.(the maximum amount of water vapour that the air can hold at that temperature) The colder the air, the less water vapour it can carry. When exhaled, air mixes with cold air, the temperature of the exhaled air drops, but there is more water vapour. When the air becomes saturated, (relative humidity is 100%), the extra water vapour will condense, allowing you to see your breathe on cold days.
Is relatively humidity affected by temperature?
Warmer air is able to hold more water vapour than cooler air. As warm humid air cools, the water vapour condenses out as water droplets.
Why there are droplets of water on the leaves in the morning?
Transpiration gives out water vapour which condenses at night because of low temperature.
