( less dense because because of the heat( warm air = hot air) the molecules of the air is very active. so the the are not close to each other which means less dense)
Cool falling air is associated with low pressure areas. This is because high pressure is commonly associated with heat and quickly moving particles.
thunderstorm.
hotness
Low pressure
a high pressure system
high pressure=sunny;good weather
High pressure
Good weather because it's an area of high pressure.
How would weather conditions in an area change if a high pressure system replaced a low pressure
Low pressure.
A tornado has a center of low pressure.
cool, dry air
in the U.S.A. what type high or low pressure system is associated with the most stable weather?
A barometer measures air-pressure (baro-meter) so a rising reading means the local air pressure is increasing. If we assume that your local gravity is constant (it usually is) then the increasing air pressure is caused by the air getting denser; more kilograms per cubic metre or pounds per pint. That could be because the air is getting colder, or because it has less water content, since making air colder makes it denser, and dry air is denser than wet air. So, a rising barometer suggests a spell of cool dry weather.A rising barometer indicates that the air pressure is rising and this is associated with clear skies with few cloud formations. Generally this will mean it is hotter than average in summer, but colder than average in winter.A rising barometer means higher pressure which means less clouds and fairer weather.
low pressure often below 975 millibars
a high pressure system
high pressure=sunny;good weather
Cyclones and decreasing air pressure are associated with wind, clouds, and precipitation.
warm weather
warm weather
warm weather