ConcepTest: Calculating Stream Discharge
This material was originally created for
Starting Point:Introductory Geology and is replicated here as part of the SERC Pedagogic Service.
Initial Publication Date: May 8, 2006
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Question:
What is the discharge of a stream in a rectangular channel that has a cross-sectional area (width x depth) of 60 square meters, that is 40 kilometers long, and has a velocity of flow of 5 meters per second?
a. 105 cubic meters per second
b. 200 cubic meters per second
c. 300 cubic meters per second
d. 2400 cubic meters per second
a. 105 cubic meters per second
b. 200 cubic meters per second
c. 300 cubic meters per second
d. 2400 cubic meters per second
Student Responses:
No data yet. The correct response is c.
If you would like to help acquire more Before and After statistics for this example, please contact the authors (see link at top of page).
References and Notes:
The use of ConcepTests and Peer Instruction is discussed in detail on the ConcepTest page.
McConnell, D.A., Steer, D.N. and Owens, K.A., 2003, Assessment and Active Learning Strategies for Introductory Geology Courses, Journal of Geoscience Education, 51(2), 205-216.
McConnell, D.A., Steer et al., 2006, Using Conceptests to Assess and Improve Student Conceptual Understanding in Introductory Courses, Journal of Geoscience Education, (54(1), 61-68.