Geologic Time Calculations
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This activity has benefited from input from faculty educators beyond the author through a review and suggestion process as a part of an activity development workshop. Workshop participants were provided with a set of criteria against which they evaluated each others' activities. After the review, the authors developed a plan for revising their activities based on the feedback they received from their peers. To learn more about this review process, see http://serc.carleton.edu/quantskills/review_processes.html#2006.
This page first made public: Jul 25, 2006
Students should learn how to be able to determine radiometric age of earth materials, given the percentages of parent and daughter isotopes. However, many students have problems working with graphs. The first part of the exercise is plotting a simple time-temperature graph, followed by simple questions based on their plotted data.
The second part is a more complicated set of data (% parent/daughter amounts, accompanied with a radioactive decay curve). The students are supposed to determine the age of the based on the given information