Students learn the two main methods to measure earthquakes, the Richter Scale …
Students learn the two main methods to measure earthquakes, the Richter Scale and the Mercalli Scale. They make a model of a seismograph a measuring device that records an earthquake on a seismogram. Students also investigate which structural designs are most likely to survive an earthquake. And, they illustrate an informational guide to the Mercalli Scale.
The southern San Andreas Fault in California has not had a large …
The southern San Andreas Fault in California has not had a large earthquake in approximately 300 years, yet the average recurrence interval for the previous five ruptures is about 180 years. Join Scripps Oceanography geoscientist Neal Driscoll as he presents new findings on a possible relationship between these earthquakes and the flooding of Lake Cahuilla, which forms episodically as the Colorado River switches course and flows north into the Salton Trough. Learn how new data on the timing and magnitude of past earthquakes are being used to assess the potential for large earthquakes in the region. (58 minutes)
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