air pressure and air temperature?

Question

air pressure and air temperature?

Answer 1

When temperature goes up, the molecules comprising the air become more agitated. These agitated molecules are moving around so they need more "elbow room", which takes up more space than molecules that are relatively stationary, so the volume of the air expands accordingly.



Since the air molecules are forcing themselves further apart, the outward pressure increases, forcing that particular mass of air to expand and take up more space. If the expansion is restricted by a balloon, the balloon will expand accordingly in response to the extra pressure.



This action makes that particular volume less dense than an equal volume of cool air in which the air molecules are moving less, so that volume will rise above a cooler air mass. This is how hot-air balloons rise.



Hope that helps.

Answer 2

When the temperature of a gas increases, the molecules of the gas move faster. When they strike the wall of the vessel, the change in momentum is greater, so the average force per collision increases. Thus, the force per unit area (pressure) increases, too.



Put a little water in a test tube and float it upside down in a bowl of water or a beaker. Heat the end of the tube where it extends out of the water. The air in the tube will heat, and the resulting increase in air pressure will push some of the water out of the bottom of the tube so it floats higher.

Answer 3

For en experiment - measure the air pressure in your car's tires before it has been driven. The drive it, warming up the tires and measure it again to see the pressure has risen.

Answer 4

Don't know if you've got a weather/science project, or more of a lab project. Air pressure will increase in a closed container if you heat it up. A simple demo of this would be to stopper a flask with a balloon on top. Heat with a burner (if they still let you use them!) and the balloon will expand. Don't heat enough to melt the balloon, obviously.



Weather related highs + lows are way out of my league!

Answer 5

Because according to Gay-Lussac's law, pressure and temperature are directly related so it means that when the variable pressure increases..the other also increases.



One experiment to illustrate this is by boiling water(possibly using a whistling kettle). As the temperature of vapor increases...the steam out of the spout increases(pressured)



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Answer 6

rite now im doing a project on that,

if you increase the air pressure.

temp goes up

thats why when you on a mountain you can boil things at a lower temp bc the air pressure increased.

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Answer 7

It's the moving particle is the air. The faster they move, the air pressure changes, and it gets colder. The slower they move, the warmer it gets. Air pressure is effected on how the particles are moving, and the temperater drops or increases.

Answer 8

When it gets hot the air particles expand and colder air makes them shiver like us when were cold

Answer 9

Ideal gas law states PV=nRT.



So if pressure goes up in a closed system the only other term that can increase is temperature. R is a constant and n is constant in a closed system.



This is due to as you increase the temperature you give the molecules more energy which will increase their speeds and thus increase the probability of them colliding. This is what pressure is.



Try filling a balloon with air and then heating it. Watch it expand.