Friday, April 19, 2013

Air Masses...Ch 8 Pg 199-204 in the green review book

if you have not done this week's HW
Hw7B:

Read pg 237-240
Do Pg 240 # 48,49,50,51,52
pg 246 -247 # 21,22,23
for the weekend

HW 7CMake a powerpoint or Poster on factors that affects our climate.
email Miss Wang at mcsmphoto@gmail.com

Next week is the last week of 2nd Marking Period! One more test! Study!
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http://www.authorstream.com/Presentation/mrseng-196224-winds-air-masses-fronts-test-entertainment-ppt-powerpoint/


In meteorology, an air mass is a volume of air defined by its temperature and water vapor content. Air masses cover many hundreds or thousands of square miles, and adopt the characteristics of the surface below them. They are classified according to latitude and their continental or maritime source regions. Colder air masses are termed polar or arctic, while warmer air masses are deemed tropical. Continental and superior air masses are dry while maritime and monsoon air masses are moist. Weather fronts separate air masses with different density (temperature and/or moisture) characteristics. Once an air mass moves away from its source region, underlying vegetation and water bodies can quickly modify its character. Classification schemes tackle an air mass' characteristics, and well as modification.

 



Different air masses which affect North America, as well as other continents, tend to be separated by frontal boundaries
what type of weather results from these air masses? see http://www.richhoffmanclass.com/images/chapter8/airmasses_map.jpg


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