PowerPoint - EarthquakesEarthquakesHeather ValenzuelaGrade Level: 9 Key Concepts: Plate tectonics cause earthquakes.There are different types of earthquake faults. Vocabulary that may be new to students: Strike-slip FaultNormal FaultReverse FaultFocus Epicenter Activity/ Homework:Lecture about earthquakes, then PowerPoint.Homework: Worksheet EALR/GLE for this lesson: 1.2.4. Analyze the patterns and arrangements of Earth systems and subsystems including the core, the mantle, tectonic plates, the hydrosphere, and layers of the atmosphere.Student Learning Objectives: Students will be able to draw each type of plate boundary and each type of earthquake fault. They will be able to explain the difference between a focus and an epicenter.Description of Plans: Time Activity MaterialsLecture50 minTypes of Faults:Strike-slip – moves laterally with little vertical motion (transform boundaries are a special type of this fault.) Normal fault – the “top” plate moves downReverse Fault – the “top” plate moves up – called thrust if theangle is less than 45oEarthquakesFocus – point in the earth where the seismic activity occurredEpicenter – point on the surface above the focus of the quakeRichter Scale – Because of the logarithmic basis of the scale, each whole number increase in magnitude represents a tenfold increase in measured amplitude; in terms of energy, each whole number increase Board, markersPowerPoint projector/TV attachmentHandout - Richter scale/Mercalli scalecorresponds to an increase of about 31 times the amount of energy released.Events with magnitudes of about 4.6 or greater are strong enough to be recorded by any of the seismographs in the world.The Richter Scale has no upper limitMercalli Scale – 12 point scale which focuses on damage to man-madestructures and property rather than Energy - used by Insurance companies.PowerPoint - EarthquakesASSESSMENT:WorksheetWebsites: http://earthquake.usgs.gov/learning/eq101/EQ101.htmName_______________________________Draw and Label each of the following:Boundaries of tectonic plates:Divergent BoundaryConvergent Boundary – Two continental platesConvergent Boundary – SubductionTransform Boundary Faults:Strike-Slip FaultNormal Fault Reverse Fault What is the difference between the focus and epicenter of an
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