This QuickTime animation shows how seismic waves are amplified when they pass through weak or loose layers of rocks and sediment. In loose water-saturated sediment, liquefaction can occur causing the ground to turn to “quick sand” during earthquake shaking.
PowerPoint presentations introducing fundamental concepts and observations of Plate Tectonics and Earthquakes. May be used either as learning aids for teachers of Earth Science or edited by Earth Science teachers for classroom use. Note: When using the PowerPoint slides as a learning resource, it is important to read the notes that accompany each slide. These notes appear below the slide in PowerPoint “Normal View”.