Ch6 Sec4 Earthquake Safety

Key Concepts How do geologists determine earthquake risk? What kinds of damage does an earthquake cause? What can be done to increase earthquake safety and reduce earthquake damage?

Key Terms Liquefaction Aftershock Tsunami Base-isolated building

Ch6 Sec4 Earthquake Risk – Geologists can determine earthquake risk by locating where faults are active and where past earthquakes have occured

Ch6 Sec4 How Earthquakes Cause Damage – Causes of earthquakes damage include shaking, liquefaction, aftershocks, and tsunamis Liquefaction: occurs when an earthquakes violent shaking suddenly turns loose, soft soil into liquid mud Aftershock: is an earthquake that occurs after a larger earthquake in the same area Tsunami: water displaced by an earthquake

Ch6 Sec4 Steps to Earthquake Safety – The best way to protect yourself is to drop, cover, and hold

Ch6 Sec4 Designing Safer Buildings – To reduce earthquake damage, new buildings must be made stronger ad more flexible. Older buildings may be modified to withstand stronger quakes – Base-isolated building: is designed to reduce the amount of energy that reaches the building during an earthquake