This document defines key terms related to earthquakes such as P waves, S waves, and L waves. It also defines the epicenter as the point above the hypocenter where a seismic rupture begins. The document then discusses the 1906 Valparaiso earthquake in Chile. It was an 8.5 magnitude earthquake caused by movement on a strike-slip fault along the Chile trench. It caused over 20,000 deaths, similar casualties to other large earthquakes caused by movement along the Chile trench.

1. By : Jordan C. P.4 11/4/091906 Valparaiso, Chile Earthquake

2. Wave Definitions…S Wave-Seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is (side to side)P Wave-A seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is movingL Wave-surface wave having a horizontal motion that is perpendicular to the direction the wave is traveling

3. Epicenter and focus definitions…Epicenter-the point on the earth’s surface vertically above the hypocenter, the point in the crust where a seismic rupture beginsFocus-the point within the earth where an earthquake rupture starts

4. Definitions of Scales…Mercalli Scale- is a number describing the severity of an earthquake in terms of its effects on the earth’s surface and on humans and their structuresRichter Scale- A method device that compares the size of earthquakes

5. My Earthquake…Name-Valparaiso, ChileDate-August 16,1906Time-7:55 p.m.Location-Central Chile

6. Info. On my earthquake…Magnitude- 8.5The cause- The cause of the earthquake was the trench in Chile. It was a strike-split fault.It has been the source of devastating earthquakes for centuries.Type of fault- Strike Split Fault

7. Info. Continued…This terrible earthquake caused 20,000 people to die! It compares to other earthquakes because it caused lots of deaths. The magnitude is also the same as other earthquakes. Anther way that it is like other earthquakes is because it was caused by the trench in Chile and other earthquakes have been caused by the same trench.

8. Bibliographywww.picsearch.comwww.abag.ca.govwww.earth.northwestern.edcwww.brainyhistory.com

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