ConcepTest: Foreshock
Question:
A seismograph records four earthquakes of magnitude 3.7, 3.2, 6.5 and 4.3 and then seismicity decreases. Which earthquake(s) represent (a) foreshock(s)?
a. 3.7 and 3.2b. 3.2 only
c. 3.7 only
d. 3.7 and 6.5
Student Responses:
No data yet. The correct response is A.
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