2007-10-02 15:30:08 · 3 answers · asked by greeny 2 in Science & Mathematics ➔ Weather
A weather front is a boundary between two masses of air of different densities, and are the principal cause of significant weather. Within surface weather analyses, they are depicted using various colored lines and symbols. The air masses usually differ in temperature and may also differ in humidity.
2007-10-02 15:38:06 · answer #1 · answered by Diane B 6 · 1⤊ 0⤋
When contrasting air masses lie side by side,the narrow zone of discontinuity,separating the two air masses is called a (weather) front.The width of the front may vary from a few miles to about 50 miles sometimes. The characteristics of one airmass changes rapidly across the front to those of the other.There is a steep gradient of these properties in the frontal area itself.
Horizontal convergenge and the associated vertical motion are the essential features of a well marked front.The vertical motion , particularly within the warmer mass results in the condensation and the precipitation.The polar front, for example extends upto the tropopause.
2007-10-02 21:20:26 · answer #2 · answered by Arasan 7 · 0⤊ 0⤋
A front, simply, is the boundary between two different airmasses. They can be different by temperature, or even humidity. Types of fronts include cold, warm, stationary, occluded, even the dry line could be classified as a type of front.
2007-10-03 07:51:20 · answer #3 · answered by cyswxman 7 · 0⤊ 0⤋