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ConcepTest: Rock Ages

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


Match the features in the relative time diagram below with the events described in the short sentences. Assume all rocks are sedimentary unless otherwise indicated.

What is the best estimate of the age of F if A is 100 million years old and D is 70 million years old?

a. 85 Myrs
b. 170 Myrs
c. 55 Myrs
d. 110 Myrs

Student Responses:

No data yet. The correct response is A.

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References and Notes:


Geoscience:Geology:Historical Geology

Resource Type

Activities:Classroom Activity:Short Activity:ConcepTests

Grade Level

College Lower (13-14):Introductory Level

Ready for Use

Ready to Use

Earth System Topics

Time/Earth History, Solid Earth:Earth Materials:Rocks


Solid Earth, Time/Earth History


Teach the Earth:Teaching Environments:Intro Geoscience