Earth Science

On the evening news , ace would usually check a reporter or meteorologist give the stand emblem for the next few days . The forecast may pop off rough constant hold out conditions for the entire hebdomad , or it could forecast extreme changes in the brook as the days go by . There are many a(prenominal) things that could indicate these changes in the conditions . However the beaver indicator of weather changes is atmospherical bosomAtmospheric public press refers to the force per unit area exerted against a wax by the weight of the beat atmosphere above that surface (University of Illinois , 1999 . retributory like liquids , bracing pattern applies coerce on all things which is rigid in spite of appearance it and surrounding it ( Pressure 2000 . Atmospheric compel is quantified in Pascals (Pa ) and is reckon with the use of a barometer ( Pressure 2000Atmospheric instancy is one of the best determinants of weather (Williams , 2008 . In weather maps , the letters H and L are used to identify the areas with high and dispirited pressure areas respectively . These areas are crucial as they mould the weather . It is a high pressure area when the pressure of the zephyr of products is greater than that of the mien around it . It is a baseborn pressure area when the pressure of the air is lower than that of the air around it (Williams , 2008 gamy pressure is mostly linked with good weather , magic spell low pressure is connected with bad weather (Williams , 2008 . High pressure is expected in areas wherein the air is declining . The tumble of the air makes it warmer , which impedes cloud formation . However , the air which goes set ashore in areas with high pressure result lastly intensify again in areas with low pressure .

When the air ascends , it becomes mothy . Then , the humidity of the cold air will be reduced to pee . If the air is very cold , the humidity can result to ice . If there is equal water or ice , there will be venturesomeness (Williams , 2008Indeed , pressure in the air plays a resilient post in influencing the weather condition . This is the reason wherefore atmospheric pressure is a key indicator of weather changesReferencesPressure (2000 . cyclopedia of Atmospheric Environment . Retrieved phratry 16 , 2008 , from hypertext transfer communications protocol /www .ace .mmu .ac .uk /eae /weather /older /Pressure .htmlUniversity of Illinois (1999 . Atmospheric pressure . Retrieved September 16 , 20 08 , from http /ww2010 .atmos .uiuc .edu (Gh /guides /mtr /fw /prs /def .rxmlWilliams , J (2008 . What s happening intimate highs and lows USATODAY .com . Retrieved September 16 , 2008 , from http /asp .usatoday .com /weather /tg /whighlow /whighlow .htmPAGEPAGE 1...If you neediness to get a spacious essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper