When hot and cold air meet, the warm air rises above the cool air, creating a low pressure zone. Warm air tends to cool as it reaches higher elevations, with the liquid in it condensing and forming clouds and rain. Cool air rushes in to fill the low pressure zone, pushing more warm air up and creating a cycle that can result in high winds and storms.Know More
The area where a warm and cold air mass meets is called a front. The severity of weather conditions at a front is determined by the direction of the cold and warm air movement. When warm air is on the move and it collides with a stationary cold air mass, the warm air rises gradually, forming drizzle and light rain. If cold air collides with a stationary warm air mass, the results are more severe. The cold air forces the warm air mass up quickly, creating large, sometimes violent thunderstorms with torrential rains. The air masses must reach equilibrium before the storm can dissipate, allowing clearer skies to prevail.
Warm and cold air masses are caused by uneven heating of the Earth by the sun. Colder air masses originate at the poles, with warmer air masses forming in the tropics.Learn more about Atmosphere
The boundary separating the zone of aeration and the zone of saturation is the water table. As groundwater seeps through the earth, different concentrations are present at each level. At some point, the ground becomes completely saturated and creates the water table.Full Answer >
Some facts about air pressure are the barometer is the instrument used for its measurement and these measurement readings are in units called millibars. There is a change in air pressure relative to altitude. At higher elevations, the air pressure is lower due to the presence of fewer air molecules.Full Answer >
A barometer is a device used to measure air pressure, or atmospheric pressure. The first kind of barometer invented was the mercury barometer. The other type, the aneroid, is a digital barometer.Full Answer >
The weight that the atmosphere exerts as it pushes downward causes atmospheric pressure. This pressure in the Earth's atmosphere affects the weather.Full Answer >