1
Published in 2015
ShakeAlert is an experimental earthquake early warning system (EEW) for the West Coast of the United States and the Pacific Northwest. ShakeAlert is a product of the US Geological Survey and its partners including the California Institute of Technology, University of California, Berkeley, University...
Grade Level   9 10 11 12
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2
This classroom lecture presents a simple conceptual model of the relative thicknesses of the Lithosphere by measuring a simple hard-boiled egg. The hard-boiled egg is used as a scale model for the zones of the Earth. The shell is to the egg as the lithosphere is to the Earth. This demonstration...
Grade Level   5 6 7 8 9 10 11 12
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3
Video lecture demonstrates the use of foam faults to demonstrate faults, and a deck of cards to demonstrate folds and fabrics in rock layers. Different types of faults include: normal (extensional) faults; reverse or thrust (compressional) faults; and strike-slip (shearing) faults.
Grade Level   9 10 11 12
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4
Video lecture on divergent, transform, and convergent types of plate boundaries. Recorded during a 2007 teacher workshop on earthquakes and tectonics. Speaker is Dr. Robert Butler, University of Portland Oregon. Three main types of plate boundaries: Divergent: extensional; the plates move apart....
Grade Level   9 10 11 12
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5
Published in 2015
The seismic shadows are the effect of seismic waves striking the core-mantle boundary. P and S waves radiate spherically away from an earthquake's focus in all directions and return to the surface by many paths. S waves, however, don't reappear beyond an angular distance of ~103° (as they are...
Grade Level   9 10 11 12
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