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What is a Seismometer?



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Activity 1 HS What is a Seismometer High School Level Objective Students will learn that a seismometer detects 3 components of motion and that a seismogram is the record of an earthquake Background Prior to this activity students should be introduced to the basics of earthquakes Curriculum for this can be found at http www redcross org disaster masters This curriculum is designed for 9 12 grade levels Other good activities can be found at http www dlese org or http web ics purdue edu braile Materials QCN Demo installed on laptop LCD projector or monitor internet access to view video slinky Activity 1 Begin with the computer on a level surface 2 Let students observe the seismic sensor for a few minutes Encourage them to jump up and down or bang on the table with a fist or drop books 3 Have students explain what they observe on the screen What does each graph mean What is the horizontal axis and the vertical axis You may want to avoid using x and y since the directions of the sensor are described by x y and z Where on the graph is the time now Why does the picture move to the left Any ideas about the Earthquake Significance graph What about the trigger line Let students wonder about the Earthquake Significance for now 4 Begin to lead students to think about what the purpose of the software is What do you think this program is designed for Why The purpose of the Quake Catcher Network is to detect earthquakes and record the seismic activity on many internet connected computers to rapidly detect earthquake activity 5 Review earthquake basics with students Show video clips of a real earthquake Video from the 2001 Earthquake in Seattle WA was captured by serveral security cameras and can be see at http www classzone com books earth science terc content visualizations es1005 es1005page01 cfm chapter no visualization or several on Youtube com page Quake Catcher Network Activity 1 for High School as of 2 27 08 Earthquake Review Earthquakes happen because of a sudden slip on a



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