Department of Earth Science |Northeastern Illinois University

ESCI 121
Spring 2007

Review for Exam #4
  (May 2, 2007)                                                                        Dr. Sanders

On this exam, you should be able to do the following:

* Use the Public Land Survey system (Township, Range, and Section) to give the location of any point on a topographic map.

* Given a location's legal description in terms of the Public Land Survey system, find that point on a topographic map.

* Define the terms divide, watershed, and drainage basin (drainage area).

* Explain how a divide can be located on a topographic map.

* Draw a diagram illustrating the processes and products of the water cycle (hydrologic cycle).

* Explain what stream discharge is, how it is measured in the field, and in what units of measurement it is expressed.

* Describe the work that streams do (erosion, transportation, and deposition) in terms of energy.

* On a map showing a stream meander, indicate where erosion is likely to be highest and where deposition is likely to take place.  Explain.

* On a map, show an oxbow or oxbow lake and explain how they formed (topo quad used in class: Arlington Heights).

* Explain what a stream floodplain is and how and why it forms. 

* On a topographic map, delineate the edges of a stream floodplain. 

* Measure the width of the
floodplain of a river. 

* List and explain factors that can affect the rate of water infiltration into the subsurface.

* Describe some of the ways various watersheds might differ from each other in terms of hydrologic characteristics (e.g. size of drainage area, degree of urbanization, and so on).

* Develop and use a test that allows you to determine how rapidly water can infiltrate into different kinds of soil.

* Develop a method for using the stream table to model processes of meandering streams and delta formation.

* Graph stream discharge data collected from the USGS web site. 

* Analyze stream discharge data in terms of how they relate to watershed characteristics, as well as precipitation/weather events.

* Explain the terms aquifer and aquitard, and tell the the difference between them.   Give examples of geologic materials that make good aquifers and those that make good aquitards.

* Explain what the term water table means, and tell how its elevation is measured.

* Describe what a ground water well is, and tell how wells are constructed.

* Calculate water elevation in wells based on depth-to-water data.

* Plot water table elevation in wells on a map, contour the points,  and tell what direction water is flowing based on the mapped position of the water table.

* Using the points we plotted on the side of the ground water model last time, find areas of faster and slower ground water flow.

* Use a ground water table elevation map to determine possible sources of contamination found in a lake and a municipal well.

* 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 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 warm and cold fronts and high and low pressure systems.

Department of Earth Science | Northeastern Illinois University

© 2007 Laura L. Sanders.  Last updated May 1, 2007.