|
Explore Teaching Examples | Provide Feedback

ConcepTest: Oceanic Floor Width

ConcepTest questions by David McConnell, David Steer , Walter Borowski, Jeffrey Dick, Annabelle Foos, Jeffrey Knott, Alvin Konigsberg, Michelle Malone, Heidi McGrew, Kathie Owens, and Stephen Van Horn

Question:

Two ocean basins of identical size are almost surrounded by continents. The oceanic lithosphere below Ocean A is bordered by plate boundaries. The sea floor under Ocean B has a plate boundary running along its center but none along its margins. Under which ocean is the oceanic floor most likely to be decreasing in width?

a. Ocean A
b. Ocean B

Student Responses:

No data yet. The correct response is A.

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: