ConcepTest: Change in Porportion of Parent Isotopes Over Time

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
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:

Which graph below best represents the change in the proportion of unstable (parent) radioactive isotopes with time?

Parent Isotope Porportion Graph

a. A
b. B
c. C
d. D

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: