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Why is the atmospheric pressure lower beneath the mass orf warm air than beneath the mass of cold air?
Wiki User
∙ 13y ago
Warm air is less dense than cold air. Heat is energy, so the warm air molecules are more energetic and move about more, increasing the distance between molecules - thus less dense.
Density is not weight as some have implied. Density is Mass/Volume.
Atmospheric pressure =(density)(accel due to gravity)(height of atmosphere)
The last two terms are constant regardless of temperature of air. Warmer air has less density and thus the pressure due to this air is less.
Alternatively, you could picture two columns of air from the ground to the top of the atmosphere having the same volume. If one has cold air and the other warm, the cold air column, being more dense, will have more mass of air within it since the volume is constant. The greater mass will weigh more due to gravity.
Source(s):Degrees in Physics and Mechanical EngineeringWiki User
∙ 13y ago
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What will happen when atmospheric pressure decreases to zero?
it will be cold
Why does atmospheric pressure change as you go up in altitude?
Atmospheric pressure changes with the weather. Cold air is heavier than warm air. Suspended particles or moisture will also increase pressure. http://en.wikipedia.org/wiki/Barometer
What happen when atmospheric pressure decreases to zero?
it will be very cold and the temprature will decreases to zero
When dense cold air pushes beneath warmer atmospheric air the lighter wamer air rises As this air rises into the atmospheere it cools and some of the water vapor in it codenses what?
A cloud is formed.
Is cold air thicker or thinner than warm air?
Hot air hasLess atmospheric pressure, in other words the air is thinner. ... Cold air is heavier than hot air *at the same pressure*
How does warm air mass being pushed into a region of cold air affect atmospheric pressure?
It results in a lower atmospheric pressure.
What will happen when atmospheric pressure decreases to zero?
it will be cold
When cold air moves into an area the atmospheric pressure is?
When cold air moves into an area, the atmospheric pressure is high because cold air is denser than warm air. When a cold front moves through an area, the pressure always rises.
Is high or low pressure cold?
If you mean to ask if cold bodies of water are associated with high or low atmospheric pressure, they aren't. Atmospheric pressure can change independently of the temperature of bodies of water.
How do atmospheric and oceanic circulations transport heat?
Atmospheric- Pressure systems, Oceans- warm and cold currents.
Why does atmospheric pressure change as you go up in altitude?
Atmospheric pressure changes with the weather. Cold air is heavier than warm air. Suspended particles or moisture will also increase pressure. http://en.wikipedia.org/wiki/Barometer
What happen when atmospheric pressure decreases to zero?
it will be very cold and the temprature will decreases to zero
How cold does water have to be to freeze in kelvins?
It depends on the pressure. At normal atmospheric pressure, the melting point of water is about 273.15 K.
What can be expected to occur to the atmospheric pressure prior to the passage of a cold front and after the cold front passes?
The pressure is lowest as the front passes. In fact, that is how you can identify a cold front on a map with no other information.
How cold is lox?
If it's at atmospheric pressure, somewhere between about -360 and -300 degrees Fahrenheit.
What crushes a tightly corked tin can containing steam when cold water is poured on it?
atmospheric pressure
When cold air moves into an area the atmospheric pressure is what A low because cold air is not as dense as warm air B high because cold air is denser than warm air C neither high nor low?
When cold air moves into an area, we have high atmospheric pressure; the cold air is denser than the warm air. Love, me :)
