1. How Earthquakes are Located and Measured By Jacob and Christian

2. How Seismologists Measure Earthquakes Triangulation is the process they use to find the epicenter, or the middle of an earthquake Triangulation is the process they use to find the epicenter, or the middle of an earthquake Triangulation requires the seismogram Triangulation requires the seismogram To pin the exact location, seismologists use three seismograms that are in three different locations To pin the exact location, seismologists use three seismograms that are in three different locations According to Ask.com According to Ask.com

3. How Earthquake Damage is Measured Mercalli Scale Mercalli Scale Measures damage, not magnitude Measures damage, not magnitude Earthquakes can be measured from I to XII Earthquakes can be measured from I to XII Not very accurate Not very accurate According to our science book According to our science book

4. How Earthquake Magnitudes are Measured To measure magnitude, scientists can use the Richter Scale; a scale that has a base ten system To measure magnitude, scientists can use the Richter Scale; a scale that has a base ten system Magnitude 1=6 ounces of TNT blown up Magnitude 1=6 ounces of TNT blown up Magnitude 8=6 million tons of TNT blown up Magnitude 8=6 million tons of TNT blown up The Richter Scale measures energy, not damage The Richter Scale measures energy, not damage According to UPSeis According to UPSeis

5. Formulas for Measuring Earthquakes Mb=log10 (A/T) + Q (D,h) Mb=log10 (A/T) + Q (D,h) Mb is body wave magnitude Mb is body wave magnitude A is the amplitude of ground motion in microns A is the amplitude of ground motion in microns T is the corresponding period in seconds T is the corresponding period in seconds Q (D, h) is the correction factor in a function of distance: D is degrees, h (in kilometers) of the earthquake Q (D, h) is the correction factor in a function of distance: D is degrees, h (in kilometers) of the earthquake According to USGS According to USGS

6. Formulas (continued) MS = log10 (A/T) + 1.66 log10 (D) + 3.30 MS = log10 (A/T) + 1.66 log10 (D) + 3.30 Standard surface wave formula Standard surface wave formula A, T, and D are the same exact variables as the Mb formula A, T, and D are the same exact variables as the Mb formula According to USGS According to USGS

7. The End Thank you for watching the power point. Now it is time to go to the jeopardy (one pointer: the bottom four questions are bonuses and information may not be in the power point).