On Shaky Ground (5:55 min). This is a presentation of various types of earthquake geotechnical hazards and their effects on structures. These hazards include ground ruptures, soil liquefaction and land slides. Since a geotechnical hazard can cause a serious effect on a community, reducing the impact of these hazards must be addressed. This video is part of the "Understanding Earthquakes and Disasters: Photo-Video Presentations for Public Awareness and Education."