0
Water can "dissolve" in air. As the temperature and pressure of air goes up, the amount of water that can be held in the air increases.
We can measure the "absolute" humidity of air, but this isn't especially useful. It is more handy to know hoe much water is IN the air, as a percentage of the amount of water the air COULD hold.
That's "relative humidity". It is important because as the temperature rises, the air COULD hold more water, so the relative humidity falls. As the temperature falls, the relative humidity rises.
As the air cools, when the air couldn't possibly hold any more water than it has now, the relative humidity is 100%, and we call this the "dew point", when dew will begin to settle onto the grass. If the air gets much colder, the water will condense out of the air and form FOG.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoHumidity describes the amount of water vapour in the air, whereas realtive humidity represents the percentage of water vapour in the air compared to the maximum amount that could exist in that air.
Wiki User
∙ 9y agoRelative humidity is the amount of water vapor in the air compared to the amount of water vapor needed to reach saturation. When air is saturated the rates of evaporation and condensation are equal. Saturated air has a relative humidity of 100%. A psychrometer (sy-KRAHM-i-ter) is an instrument that is used to measure relative humidity.
Wiki User
∙ 9y agoThe amount of water vapour in air is called as humidity. The ratio of amount of water vapour (m) actually present in a certain volume of air at a given temperature to the amount of water vapour (M) required to saturate it, is called relative humidity.
Wiki User
∙ 9y agoRelative humidity is ratio between the current and maximum humidity possible in the air. This varies based on the air temperature, pressure, and other atmospheric conditions.
Wiki User
∙ 9y agoRelative humidity is the amount of water vapor present in the air which is expressed as a percentage of the amount needed for saturation. It has to do with climate control.
Wiki User
∙ 14y agoRelative humidity is the amount of moisture or humdity in the air compaired to how much could be in the air.
Wiki User
∙ 7y agothe relative humidity is how humid it is in a given place at a given time
Wiki User
∙ 10y agovania huaranga
Add your answer:
Earn +20 pts
Define climate and explain how climate differs from weather.?
Climate is a weather pattern that occurs in an area over many years, where as weather is a day to day occurrence which can differ depending on the humidity, relative humidity, precipitation percentages and temperature.
What does it mean if the relative humidity of air is 50 percent?
If the relative humidity is at 75%, the air is not holding it's maximuim amount of water vapor. If it was holding its maxumum amount it would be 100%. The formula for that is:Actual water vapor_______________ * 100 Equals the percentTotal water vapor
What are the basic characteristics used to describe air mass?
Air masses are described by two basic characteristics. Temperature and moisture, or humidity, are the main characteristics that define an air mass.
How do you define soil?
define soil crusting
Why vegetation can be used to help define climate boundaries?
how can vegatation help define climate boundries
What is a sentence to define humidity?
humidity means the heat which leads to sweating
Define climate and explain how climate differs from weather.?
Climate is a weather pattern that occurs in an area over many years, where as weather is a day to day occurrence which can differ depending on the humidity, relative humidity, precipitation percentages and temperature.
Why do scientists call Antarctica a polar desert?
Because it at the south pole and its a desert.
What does it mean if the relative humidity of air is 50 percent?
If the relative humidity is at 75%, the air is not holding it's maximuim amount of water vapor. If it was holding its maxumum amount it would be 100%. The formula for that is:Actual water vapor_______________ * 100 Equals the percentTotal water vapor
Is define as the relative consistency of the body internal environment?
homeostasis
Is it as humid in Hawaii as it is in Minnesota during the summer?
The question has no absolute answer as you must define a measure for humidity.
How big is a large object?
It's relative to what you define as a small object.
Define the period of repolarization when only a strong stimulus will elicit an action potential?
Relative refractory period
What would Happen if people used relative location to define it?
People would have to use a map.
What is the difference between relative density and density?
Nothing really. Density is stated by a material's kilograms per liter relative to pure water which is used to define a density of 1.
Define low humidity?
High humidity means atmospheric air is saturated with more water vapour at a given temperature. Low humidity means less amount of water vapour in atmospheric air at a given temperature.
What is the physical significance of gradient define?
The gradient of a curve is the rate of change in the dependent variable relative to the independent variable.
