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How can air and water make pressure?

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Answered 2005-05-23 19:57:17

Water and air have molecules that are spread far apart from each other. When one is placed into a small space, the molecules are forced closer together. The molecules push back against the sides of the container, creating pressure. The smaller the space, the greater the pressure.

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water is more dense than air and it has atmospheric pressure also pushing down on it to make it have greater pressure than air.


Is change because the air and the water and the resulting pressure. Is change because the air and the water and the resulting pressure. Is change because the air and the water and the resulting pressure. Is change because the air and the water and the resulting pressure. Is change because the air and the water and the resulting pressure. Is change because the air and water and the resulting pressure gradients stimelate.


Air pressure and water pressure are both considered fluids. Air is compressible and determined by containment; water is determined by the depth.


Lower the air pressure above the water.


In a well system, water is propelled by air pressure.


Air pressure was discovered in 1817 by Boyle when he did a experiment that showed that air pressure pushes on cardboard to make water stay in a cup when it was flipped upside down.


Water Pressure is higher because of it's molecular weight as compared to air.


Think of it this way, if you had a plastic bottle filled with water and you poked a hole in the side, would water squirt out or would air squirt in? If air squirted in, then the air pressure would have to be higher. But since we know that the water would squirt out, we know that the water's pressure must be stronger. Of course, this is under normal conditions. If you pumped the air pressure up enough, then the air pressure may become stronger than standard water pressure. So actually, water pressure is generally stronger than air pressure.


The pressure in an air pocket would have to be equal to the pressure of the surrounding water, and would be equal to the weight of a column of water at that depth.


This effect is caused by the partial pressure of the water vapour in the air. The more humid the air, the more water vapour it contains and thus it has a higher partial pressure. This pressure tends to prevent water from evaporating. When the air is completely dry, there is no partial pressure from any water vapour and water will evaporate more quickly. The partial pressure of the water vapour plus the partial pressures of the other gases in the air all add up to create the total pressure of the air. It follows that water will evaporate more slowly when the total air pressure is high and evaporate more quickly when the total air pressure is low.


It decreases. Air pressure is simply the pressure of all the other air on top of it. As you increase in elevation, there is less air on top of you. Therefore, the air pressure is less. As your altitude decreases, there is more air on top of you, therefore, the air pressure increases. Same with water. As you descend, water pressure increases. More on top of you.


The major difference in air pressure and water pressure is the weight. Water is a lot heavier than air. One cubic foot of air weighs 1/12 of a pound. One cubic foot of water weights approximately 64 pounds.


Air pressure becomes lower as water molecules are added to the air because water molecules have less weight.


Due to pressure in the air surrounding the water. The higher the altitude of the water is, the less pressure is acting on the water from the surrounding air.


Air exerts pressure in the same way that water exerts pressure on a diver. Air has weight, and because we are at the bottom of a blanket of air that surrounds the earth, the weight of that air is pressing down on us (creating pressure). If you go under water, you'll feel the additional pressure created by the weight of the water above you.


Air exerts pressure in the same way that water exerts pressure on a diver. Air has weight, and because we are at the bottom of a blanket of air that surrounds the earth, the weight of that air is pressing down on us (creating pressure). If you go under water, you'll feel the additional pressure created by the weight of the water above you.


If you mean a well tank, the water is forced in by the pump. The residual air pressure pushes the water out to the faucets.


Water boils when the vapor pressure of water equals total atmospheric pressure. As air pressure drops, so does the boiling point. In a vacuum, water boils at "room temperature".


As air pressure decreases, the boiling point of water also decreases.


an example of air pressure would be 45% of water vapor outside.


'atoms' cannot 'react' to air pressure for air pressure is generated from atoms (oxygen, noble gasses, water).


it affect how much water can be evaporated into the air


Both air pressure and water pressure are measured in pounds per square inch. {Or some similar label in different parts of the world.}


Air pressure holds water in the air. When the pressure builds up and the air gets too saturated to hold any more moisture, then precipitation will occur.


The amount of moister in the air is called the relative humidity. It is the ratio of the partial pressure of water vapor in an air water mixture to the saturated vapor pressure of water.



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