Department of Earth Science |Northeastern Illinois University

ESCI 121
Spring 2007

Daily Objectives #26
(April 30, 2007)                                                                        Dr. Sanders

By the end of today’s class, you should be able to do the following:

* List and describe the meaning of common weather measurements: temperature, barometric pressure, relative humidity, wind speed and direction, and precipitation.

* Describe the temperature and moisture characteristics of these major air masses: continental polar, and maritime tropical

* Tell what causes precipitation.

* Explain what conditions lead to frontal precipitation.

* Describe a warm front and a cold front, draw each in profile (side) view, and using the diagrams, explain how/why each leads to precipitation.

* Explain what barometric pressure has to do with wind direction.

* Describe the characteristics of between high pressure systems and low pressure systems.

* Explain how high and low pressure systems affect Chicago's weather as they move across the Midwest.

* Predict the weather in different cities based on the positions of high and low pressure systems.

Department of Earth Science | Northeastern Illinois University

© 2007 Laura L. Sanders.  Last updated April 30, 2007.