Student Exploration: Earthquakes 2 – Determination of Epicenter
[NOTE TO TEACHERS AND STUDENTS: This exercise assumes that you have a data table
and graph made while using the Earthquakes 1 – Recording Center Gizmo™. I
...
Student Exploration: Earthquakes 2 – Determination of Epicenter
[NOTE TO TEACHERS AND STUDENTS: This exercise assumes that you have a data table
and graph made while using the Earthquakes 1 – Recording Center Gizmo™. If you do not
have those, or have never used that Gizmo before, do that first.]
Vocabulary: body wave, earthquake, epicenter, fault, focus, P wave, S wave, seismic wave,
seismogram, seismograph
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Three dogs meet in a park. Each dog is attached by a leash to its owner (triangles).
1. What does each colored circle represent? ________________
__________________________________________________
2. Where could all the dogs meet in one place? Draw this point
on the diagram.
3. Is there another spot where all three dogs could meet? ______
Explain: ___________________________________________
Gizmo Warm-up
When you used the Earthquakes 1 – Recording Station
Gizmo™, you learned how to find the distance from a
recording station to the epicenter. With the Earthquakes 2 –
Determination of Epicenter Gizmo, you will use data from three
recording stations to find the exact location of the epicenter.
Click Play ( ), and then click Pause ( ) when the
seismograms are complete. Compare the three seismograms.
1. Which recording station is closest to the epicenter? ______
How do you know? _________________________________________________________
2. Which recording station is farthest from the epicenter? ______
How do you know? _________________________________________________________
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