1. Earthquake safety 2-4

2. Earthquake risk Determined by locating where faults are active and where past earthquakes have occurred High risk on West coast because North American and Pacific plates meet nearby

4. How Earthquakes Cause Damage Shaking Liquefaction Aftershocks Tsunamis

5. Shaking Produced by seismic waves Can trigger landslides or avalanches Damage and destroy buildings Type of rock and soil determines how much the ground shakes – Loose soil shakes more violently than solid rock

6. Liquefaction Earthquakes violent shaking turns loose, soft soil into mud Likely where soil is full of moisture

7. Aftershocks Earthquake that occurs after a larger earthquake in the same area May strike hours, days, or months later

8. Tsunamis Caused when an earthquake jolts the ocean floor causing it to rise slightly and push water out of the way Height of wave is low in the open ocean Grows as it reaches shore

9. https://app.discoveryeducation.com/player/vi ew/assetGuid/24c7f9d4-da3d-43c5-a28e- 98528e5b648d https://app.discoveryeducation.com/player/vi ew/assetGuid/24c7f9d4-da3d-43c5-a28e- 98528e5b648d

10. Protecting Yourself Earthquake kit-canned food, water, first aid Drop, cover, hold Indoors: – Crouch under table or desk or against an inner wall; cover head and neck with arms – Avoid windows, mirrors, wall hangings, unstable furniture Outdoors: – Move to open area – Sit down – Avoid vehicles, power lines, trees, buildings

12. Designing Safer Buildings Reinforce or strengthen walls Anchor to solid rock below soil Build base isolated buildings with shock absorbing rubber pads or springs Flexible joints in gas and water lines Automatic shut off valves