ConcepTest: What percentage of parent isotopes remain?
The half-life of a radioactive isotope is 1,000 million years. Scientists testing a rock sample discover that the ratio of parent and daughter isotopes indicates that the rock is 3,000 million years old. What percentage of parent isotopes remain in the sample?
No data yet. The correct response is c.
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References and Notes:
Historical Geology, Geochemistry:
Resource TypeActivities:Classroom Activity:Short Activity:
Grade LevelCollege Lower (13-14):
Ready for Use
Ready to Use
Earth System Topics
Time/Earth History, Solid Earth:
ThemeTeach the Earth:Teaching Environments:
Intro Geoscience, Teach the Earth:Teaching Topics:
Early Earth, Teach the Earth:Course Topics: