Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION TO EARTH SCIENCE
ESCI 121
Section 06
Fall 2008
Department
of Earth Science |Northeastern
Illinois University
Complete the activities from last time that you
have not already completed. For activities One, Two, and Three, see the
objectives from our Nov. 20 class.
In addition, complete Activities Four and Five.
| ACTIVITY FOUR:
Present your stream data. Tape
your graphed discharge data to a sheet of poster paper.
In
LARGE letters that can be read from halfway across the room, show the
following information: w Stream Name w Gage location (name of town) w Dates for which discharge is graphed w Peak flow (in cubic feet per second) w Drainage area w Your name |
| ACTIVITY FIVE: Collect and analyze the class'
collective data. w Use the data collection sheet provided (a clean copy can be printed from the Excel worksheet (legal size paper works best) linked here). w Fill in the data collection sheet by examining the posters around the room. Once your data collection sheet is complete, sit with a group of 2-3 other students and do the following: A) Analyze the data, looking for patterns in the relationships between variables. Look for trends: for example, you might find that whenever variable X increases, so does variable Y. Or, when watersheds are located in a certain kind of area, their graphs seem to exhibit a certain characteristic. Or maybe you'll find that when the storms occur in a certain season, or in a certain type of terrain, the graphs have a certain shape or look to them. For something to be a pattern, it has to show the same relationship repeatedly! B) Choose two of the patterns you listed in Step 1, and for each one of the two patterns, do the following: i) Propose a hypothesis to explain the pattern. (For example, why does variable Y seem to increase every time variable X increases? Explain.) ii) Note any exceptions to the pattern, and explain them. (Why do these streams/graphs not fit the pattern? What's different about them?) |