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Higher the temperature, lower is the air pressure.
Lower the temperature, higher is the air pressure.
Are they right? If yes, why?
Lower the temperature, higher is the air pressure.
Are they right? If yes, why?
Actually, the exact opposite is true about what you said. First of all, pressure increases with temperature, and increasing pressure or temperature causes density to go down. Hence why hotter air rises and cooler air sinks. In fact a "high pressure system" that they refer to in forcasts always have higher temperature, and low pressure systems always have lower temperature. According to the Ideal Gas Law....cepheid said:In general, I think that this is correct. A warm air mass will rise and expand. When this is happening over you, the local atmospheric pressure is therefore lower. I'm guessing it's simply because you have a less dense air mass over you. Therefore it weighs less and exerts less pressure. Come to think of it, it's like suddenly having fewer air molecules per unit volume. Just as if this were happening in a container, the pressure would decrease.
Likewise, a cooler air mass will sink and contract, becoming more dense. I'm quite sure that when that happens in your area, it's referred to as a high pressure system.
Is my assessment correct?
Actually, if you look at weather forecasts, its the other way around.7bear said:Higher the temperature, lower is the air pressure.
Lower the temperature, higher is the air pressure.
Are they right? If yes, why?![]()
Yeah, actually. I'm really confused about this after reading everyone's answers. I admit I must have been wrong, but what I'd like to know is what's meant by high pressure and low pressure weather systems.expscv said:is this in a test tube, or the whole world?
you should give more deatail , casue this will leads to several answers
Thats the thing, it DOES displace those around it, hence "wind".cepheid said:Yeah, actually. I'm really confused about this after reading everyone's answers. I admit I must have been wrong, but what I'd like to know is what's meant by high pressure and low pressure weather systems.
Classroom explanations are kind of weird because they talk of an "air mass" being warmed, expanding, rising, and cooling. I'd also like to know: if we're surrounded by a sea of air, what differentiates one particular air mass, and how can it "expand" without displacing air around it?![]()