ConcepTest: Relationship Between Stream Discharge, Depth and Velocity
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
Question:
A stream channel is widened by erosion, but stream discharge is unchanged. Which of the following statements must be true?
a. depth increased and/or velocity increased
b. depth decreased and/or velocity increased
c. depth increased and/or velocity decreased
d. depth decreased and/or velocity decreased
a. depth increased and/or velocity increased
b. depth decreased and/or velocity increased
c. depth increased and/or velocity decreased
d. depth decreased and/or velocity decreased
Student Responses:
No data yet. The correct response is d.
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.