1. San Francisco, 1989 67 dead 2,000 homeless 6.9 Richter scale Bam, Iran, 2003 30,000 dead 70,000 homeless 6.7 Richter scale.

2. Design a Building to withstand Earthquakes

3. An Earthquake Proof Building The Transamerica Pyramid in San Francisco, built to withstand earthquakes, swayed more than 1 foot but was not damaged in the 1989 Loma Prieta, California, earthquake. It is also built on very solid ground that is less likely to fracture during an earthquake.

4. Two ways a building can withstand an Earthquake

5. Questions to Think about How will you stop the building from collapsing? How Trusses Help Understanding Height-base ratio

6. Extension Activity http://www.mysciencebox.org/shaketable