Vocabulary: body wave, earthquake, epicenter, fault, focus, P-wave, S-wave, seismic wave, seismogram, seismograph
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Earthquakes are usually caused by the sudden movement of rocks along a fault, or fracture, in Earth’s crust. The m...
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Have you ever experienced an earthquake? yes
If so, what did it feel like?
Everything shaking and kind of bouncing
Earthquakes are
shared via
usually caused
by the sudden
movement of
This study resource
rocks along a
fault, or fracture,
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in Earth’s crust.
The most
was
famous fault in
the
U.S. is the San Andreas Fault in California.
What major cities are located near the San Andreas Fault?
Los Angeles, San Francisco, fault
Gizmo Warm-up
The Earthquakes 1 – Recording Station Gizmo™ simulates the
seismic waves released by an earthquake. To begin, look at
the key on the bottom left side of the Gizmo.
The epicenter of the earthquake is the point on Earth’s
surface closest to the focus, or origin, of the earthquake.
What symbol represents the It looks like
epicenter? a compass
What symbol represents the A little triangle
recording station?
Click Play ( ) and observe the seismic waves leaving the epicenter of the earthquake.
What types of seismic waves are P waves
released?
Look at the Recording station detector on the upper left side of the Gizmo. What
happens when the seismic waves hit the recording station?
Pa g e of 5 Revised by NVLA: 10/11/2017
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