What is the cause/effect relationship of pressure to high altitude and to ocean depths?
605725
If you think of pressure as being the weight of a column of air at sea level, lets just call that 760 for example, then the column would be shorter and not as heavy if you were on the top of a mountain and therefore would have a lower pressure, say 500 and out in space it would be almost 0.  In the reverse if the column were going below sea level, it would be even heavier and therefore the pressure would be greater than 760. The deeper you go the heavier or greater would be the pressure.
160785
The pressure is high at the surface where air is slowly descending — much too slowly to feel. And, this is going on over a large area, maybe a few hundred square miles. As air descends, it warms, which inhibits the formation of clouds. This is why high pressure is generally — but not quite always — associated with good weather
105710
To expand on Valentin's answer:\n\nFirst, realize that most atmospheric heating comes from the surface of the earth; the atmosphere itself is transparent to most frequencies of light energy coming from the Sun.  It's when that radiation hits the surface of the Earth and gets converted to infrared, i.e. heat, radiation that the atmosphere gets heated.\n\nNow, the "physics problem":  Pressure, density and temperature are all related by gas laws.  As the warm air rises, it expands, without taking on heat from its environment, and thus cools.  \n\nNext, add the "natural phenomenon".  Higher altitude air is generally drier than lower altitude air; water vapor helps lock in the heat radiating from the surface; hence higher altitude air locks in less heat than lower altitude air.  And, it's true that high altitude winds result in the air absorbing less heat from the surface.
194460
Atmospheric pressure is the pressure above any area in the Earth's atmosphere caused by the weight of air. Standard atmospheric pressure (atm) is discussed in the next section.\n\nAs elevation increases, fewer air molecules are above. Therefore, atmospheric pressure decreases with increasing altitude. The following relationship is a first-order approximation:\n\n    &#92;log_{10} P &#92;approx {5-{h &#92;over 15500}},\n\nwhere P is the pressure in pascals and h the height in metres. This shows that the pressure at an altitude of 31 km is about 10(5-2) Pa = 1000 Pa, or 1% of that at sea level1.\n\nA column of air, 1 square inch in cross section, measured from sea level to the top of the atmosphere would weigh approximately 14.7 lb. A 1 m2 column of air would weigh about 100 kilonewtons\n\nHere is a link to an online Java calculator that converts pressure to altitude\nhttp://www.csgnetwork.com/pressurealtcalc.html
1002151
14.7 PSI is the atmospheric pressure at sea level. It has nothing to do with gravity.
139400
the air gets thinner as you rise in elevation.  the thin mountain air doesn't trap the heat as well as the thick air near sea level does.
1017010
It is more complicated than that.  So I'll just explain it all.  \n    What Makes Weather: "Weather" is caused by uneven heating of the earth's surface. Warm air is lighter than cold air, so it rises. Rising air would create a vacuum, but nature won't permit that, so surrounding air rushes in to fill the void that rising air is trying to create. The result is "wind". Also, its the warm air, rising air in one area, and the cold, descending air in a different area that creates differences in air pressure, i.e. barometric pressure, and at any given spot in the world this pressure is constantly changing. We humans seem a bit out of tune with barometric pressure changes, as they don't seem to affect us as much, at least outwardly. Do these pressure changes affect other land animals? Probably so. Some of this we can maybe document, but a lot of this is still open to further study. Most anglers agree that fish react considerably to changes in air pressure. Why? To understand the answer to that question, we should think of the "air" above as pushing down on a lake or river because of the air's weight. We now know that the weight of that air is constantly changing through air pressure changes. One key to why fish are so affected by air pressure changes is that when air pushes on the water there's no place for it to go, or at least there's very little water compression. Further, when air compresses down against a body of water, the pressure in the water itself is more (water pressure) than the difference than the air pressure has experienced because air will compress so much more. The "standard" for barometric pressure is 29.92 inches of mercury at sea level. This means "standard" air pressure will hold up 29.92 inches of mercury (if it's inverted just so). If air pressure increases, i.e. there's more weight on it, the pressure goes up, maybe to 29.99, 30.13, something like that. If air pressure goes down, there's less weight pressing down on it, so the numbers might read 29.85, 29.79, something like that. The thing to remember is that while you might imagine these fluctuation to be small (maybe because we can't feel them), fish like bass do feel these changes, perhaps dramatically because the air above is pressing down on the water where they live and the changes in the water pressure are much more dramatic than in the air.\n\nHow Pressure Affect Bass: Sorry for that lengthy explanation, but maybe this is the first time you've been able to better understand what barometric pressure is, as well as why fish are maybe more affected by these changes in their watery environment. One of the reasons bass are so challenging is that they seem more influenced by environmental changes like barometric pressure. These atmospheric pressure changes affect shallow water bass more than they do the deeper dwellers. It is thought that fish are able to monitor pressure changes via their swim bladder. We can assume that when barometric pressure goes up (higher), bass feel increased pressure on their swim bladder. The swim bladder might even compress. Does this make them feel lethargic, uncomfortable, less inclined to feed? Might high pressure even affect their equilibrium or sense of balance? Probably so on all counts, or at least that's what many people are theorizing at this moment. Recall how a bass reacts when it is kept out of the water longer than it normally take to release it? They turn on their side when you turn them loose. One plausible reason this might occur is that by being out of the watery environment for a while, their swim bladder expands considerably, fouling up their equilibrium. It probably takes a bass quite a long time to recover from this. Same deal with a marked air pressure change (up or down) which in turn affects the pressure in the water.\n\nHow To Check Your Local Pressure: What about the barometers you keep in your house? Are
1182741
This is due to two reasons:\n\nAt high altitude, the atmospheric pressure is much less than sea level, because gravity causes most of the atmosphere to settle towards the Earth.  In fact, over 50% of the atmosphere resides under the five mile mark above the Earth.  As a result, the air is less dense the higher you go.  \n\nNow it is true that the sun heats this air, but since there is less pressure, it expands as it rises much more easily than the air does near the Earth.  As a result of this expansion, the air cools.
508799
That depends on the depth. For each 27.68" of liquid water, there is an increase of 1 psi. This would be affected slightly by anything disolved in the water, such as salt in the oceans. Water vapor in the atmosphere is also sometimes included in the term hydrosphere. Pressure at the Earth's surface is figured as 14.7 psi in common usage, which accounts for the difference in psi(a) and psi(g) data.
802914
Your puzzle is explained in part by the thermodynamic behavior of air.  \n\nWhen a 'pocket' of air is heated, its density decreases relative to the surrounding atmosphere, and so it begins to float upward.  As the hot air rises through the troposphere, the pressure around it drops, because there is less air and more available space to fill.  The volume of the hot air expands as a result, but this expansion progressively drains the heat from the air, through a process called 'adiabatic cooling.'  In the end, the air pocket is dispersed, its temperature dropping far below the air temperature at the Earth's surface.  This process happens constantly, all over the atmosphere, and is one factor contributing to the overall 'lapse rate' of the atmosphere (the rate of temperature decline as altitude increases).
320348
Deep ocean travel requires two things:\nProtection from the enormous pressure\nAdequate supply of oxygen and breathing gas for the safe return to the surface.\n\nAs we dive deeper, our bodies are subjected to the increasing water pressure.  This is especially so if we dive only to depths of less than 100 meters.  As we dive deeper, our bodies are subjected to greater pressure.  Our blood absorbs MORE gas (namely nitrogen gas); as we return to the surface, the increased amount of nitrogen gas in the bloodstream begins to leave the bloodstream.\n\nIf divers return to the surface too fast, the nitrogen gas will bubble out too fast causing a painful and possibly fatal condition called "The Bends".  So, divers must "acclimate" to sea level pressure slowly.\n\nDivers who dive very deep must remain inside pressure chambers in which the air pressure is slowly reduced to sea level pressure, gently allowing the (bloodstream's) absorbed nitrogen gas to escape safely.
912617
P=P(0)*exp(-1.1e-4*H)\n\nP(0) is the pressure at sea level. Note it's temperature dependent and it assumes a stable Boltzmann type distribution.
435179
The higher the elevation, the lower the boiling point of water.\n\nThe reason for this is that the boiling point of water is linked to the air pressure where the water is.\n\nAs water gets hotter, it changes to water vapor.  When enough water vapor is produced, the pressure of the water vapor will exactly equal the pressure of the air over the water.  When a tiny bit more water vapor is produced, the water vapor now has MORE pressure than the air, so a bubble is produced.  Boiling is lots of these bubbles forming at the same time.\n\nThe lower the air pressure, the less water vapor pressure that you need to boil - so the boiling can start at a lower temperature.\n\nAir pressure is linked to altitude - the higher you are, the lower the average air pressure.\n\nIn death valley, the air pressure is even higher than at sea level - so you would have to get water hotter than the standard 212 degrees Fahrenheit before it will boil.\n\nThe link below has a list of Boiling point temperatures for water at different altitudes.  A few sample numbers are:\n\n-500 feet - 212.9 degrees\n4000 feet - 204.7 degrees\n9000 feet - 195.5 degrees
856212
There is a standard model of the atmosphere which is used for calibrating instruments such as aircraft altimeters.  The standard sea level pressure is 1.01325 bars, or about 760 mm Hg.  In a vacuum, the pressure is reduced sufficiently to facilitate whatever process the vacuum was intended to enable; in laboratories, vacuums of 1E-8 bar or lower are attainable.
360638
I'm thinking that you meant to type pressure instead of height. because millibars do not measure height. they measure pressure. and altitude and height are pretty much the same thing.\n\nthe relationship between altitude and pressure can be modeled by this equation\n\nlog(.01*P)~5-(h/50853.0185)\n\nwhen P=pressure in millibars and h=altitude in feet
634368
Low pressure develops when pockets of warm air rise.\n\nHigh pressure develops when air sinks. It is literally pushing down.\n\nAir pressure in general changes due to elevation. The higher up you go, the less air. In turn, there is less air pressure. This is due to the forces of gravity.
679029
No it has to do with large amounts of methane gas that the Earth periodically releases from beneath the ocean floor. There was an extensive study put into it with people tops in their fields. They discovered methane being released. The conclusion from the studies and experiments..\n\nMethane gas caused plane instruments to to read the plane was climbing in altitude do to the change in the atmospheric pressure, when actually the plane remained the same, thus causing pilots to put their air crafts into a dive and causing certain death. \n\nMethane gas can also cause a plane engine to stop running in an instant, as it was proven a very low amount in the air is all that is needed to induce this catastrophic effect.\n\nIt was also proven that when large pockets of methane gas are released from Earth under the ocean floor..it can cause a ship as large as a massive oil tanker to sink in 4 seconds, due to the gas having a stronger negative effect on the ships buoyancy.\n\nI do believe this to be the most plausible explanation for the Bermuda Triangle.