Finding the epicenter of an Earthquake by Ah - Ha Lessons 5.0 (1) $3.00 PDF Activity This lesson teaches the student the process scientists use to locate the epicenter of an EQ. 87 0 obj <> endobj xref 87 28 0000000016 00000 n Assess their understanding based on the thoroughness of their answers. minutes and P waves 8 minutes to Seismograms Figure 1 is a simplified example of a This investigation is considered generally safe to do with students. hbbd``b`$C`q9 X_$_g`bdxc`X This activity is designed around the Earthquakes Living Lab, a resource and online interface that uses real-time U.S. Geological Survey seismic data from around the world. Thanks for your feedback! Epicenter. Do you agree with this alignment? d>(ZvO= BDF endstream endobj 74 0 obj <>stream 0000030240 00000 n Earth and Space, Physical Science, A process called triangulation uses seismic data from three locations to identify the epicenter of an earthquake.copyrightCopyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. 0000055643 00000 n minutes = 6 minutes. All the arcs should intersect at a common point - the epicenter. I contacted the persons listed below to find out the location of the following people entitled to notice Name of Person Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Section 8.1 What Is an Earthquake? How does the lag time change as you get farther and What is the time lag for the Seattle, Washington, seismic station? Tips: Make sure students are reading the S waves and not the P waves. One seismogram indicates the distance to the epicenter. Pwaves have the greatest velocity and reach theseismic station first. The lag time for any !D,X2:azTG)kPT~Mj 4>d w@O'. Direct student pairs to independently complete the tutorial/simulation to find an epicenter location via the triangulation method and compute the earthquake magnitude: The simulation directs students to look at three simplified seismograms from seismic stations in Chile (Talca, Santiago, Osorno) and select the correct measurements of the S-P intervals. The vertical lines, spaced one Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. 5 4. epicenter, the longer the lag time measured Then locate and click the link in the center of the page under the question: "How is an earthquake epicenter located and how is magnitude determined"? ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows seismograms for the same earthquake recorded at three locations - New York, Nome, Alaska, and Mexico City. Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . Figure 13.10). The wavelength and frequency of a wave are related to one another by the speed of travel of the wave, which depends on the type of wave and the medium through which it is passing. Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. The process is called triangulation. Before going to the classroom, you will need to: Provide each student, with the following: Earthquakes occur every day all over the United States and all over the world. 0000005081 00000 n Apr 8, 2020 One seismogram indicates the distance to the epicenter. Share with Classes. 0000001777 00000 n A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D 0000000856 00000 n Use Figure 5 and the travel-time graph in Figure 4 to determine . 0000115324 00000 n The magnitude determination is based on seismic data. 0000007783 00000 n Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . For purposes of this activity, the least complicated and probably most accurate approach is to just use the term "magnitude," without needing to say "on the Richter scale" or "on the moment magnitude scale." miles from the epicenter of an 0000030968 00000 n Why might the triangulation method not always produce an exact point (other than your measurement errors)? Seismic stations detect earthquakes by the tracings made on seismographs. Dochub is the best editor for changing your documents online. Quick Tips. It is slower than the same earthquake's P wave and cannot travel through liquids. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. How do we determine the epicenter of an earthquake? Do limits exist on what science can predict? Answer the following questions in the spaces provided. To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. 1. Therefore, the lag Focal Depth. Short for "secondary wave" or "shear wave." n{6c&6NK*U;=9i%nF 0000001736 00000 n (Grades hbb2b`b``a I @ endstream endobj 62 0 obj <>/Metadata 55 0 R/Pages 51 0 R/StructTreeRoot 57 0 R/Type/Catalog/ViewerPreferences<>>> endobj 63 0 obj <>/Font<>>>/Fields[]>> endobj 64 0 obj <>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 65 0 obj <> endobj 66 0 obj <> endobj 67 0 obj <> endobj 68 0 obj <>stream (, Have any of you ever experienced an earthquake or know anyone who has? Describe the logarithmic nature of the earthquake magnitude scale. minutes? Expert Answer. Most of these earthquakes are small tremors that cant be felt by people, but occasionally an earthquake occurs on a large magnitude that causes millions of dollars in property damage and kills hundreds to thousands of people. Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). If you can't find an answer to your question, please contact us. velocity, amplitude, and frequency of the 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Using online resources and simulations available through the Earthquakes Living Lab, students explore the consequences of subsurface ground type and building height on seismic d Seismographs are measuring devices designed by engineers and used by researchers to determine the locations and magnitudes of earthquakes. It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. Section A - Operator Information 1. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. Key Facts & Information. a project of D2L (www.achievementstandards.org). 3000 miles. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. The uses of technologies and any limitations on their use are driven by individual or societal needs, desires, and values; by the findings of scientific research; and by differences in such factors as climate, natural resources, and economic conditions. We additionally manage to pay for . When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. distance = travel time for S waves Today, most seismologists no longer follow Richter's original methodology because it does not give reliable results when applied to stronger earthquakes and it was not designed to use data from earthquakes recorded at epicentral distances greater than ~600 km. : an American History (Eric Foner), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), How many minutes elapsed between the arrival of the first P wave and. They use three seismographs in a process called triangulation to determine earthquake epicenters. Get the inside scoop on all things TeachEngineering such as new site features, curriculum updates, video releases, and more by signing up for our newsletter! S waves. How does distance from the epicenter affect the magnitude (height) of the seismograph reading? Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. By looking at the time between the arrivals of the P- and S-waves, one can determine the distance to the earthquake from that station, with longer time intervals indicating longer distance. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. xb``d``Id`a`Ab@_ :iWGi>|q` Cross), Give Me Liberty! locate and label the epicenter of the earthquake on this map. 0000001893 00000 n Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. 0000008845 00000 n Before looking at the Earthquakes Living Lab, have pairs complete the, Then guide the teams to the Earthquakes Living Lab via the living lab website at. 01. Please answer the following questions using the earthquake video shake, shake, shake. Find 23 millimeters on the right side of the chart and mark that point. Graphs, charts, and images can be used to identify patterns in data. HS]o01j6R0iMm4U=wL8]BE< question 1 of 3. Alignment agreement: Answer Key: Lab 5 Earthquakes - Find People, Locating Earthquake Epicenters | CK-12 Foundation, Earthquake Station - Regents Earth Science, Locating Earthquakes Teaching Resources - TPT, Locating An Epicenter Teaching Resources - TPT, How To Find The Epicenter Of An Earthquake - YouTube, Locating The Epicenter Of An Earthquake Worksheet, Locating An Earthquake Epicenter Worksheet Answers, glencoe responsible driving chapter 2 answers, pnp neuro psychiatric exam sample questions, quais tipos de drogas sao detectadas no exame toxicologico, centro de apoio diagnostico resultado de exames, locating earthquake epicenter worksheet answer key, exame pcr covid para viagem internacional, quantos dias pra sair o resultado do exame de covid, du ma political science entrance exam syllabus 2023, earth and life science grade 11 module 4 genetic engineering answer key, go math grade 5 chapter 11 lesson 11.9 answer key, civil service examination in the philippines. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. ?t?s=Yt '_( endstream endobj 76 0 obj <>stream HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. 107 0 obj <>stream www.teachengineering.org/activities/view/csm_findingepicenters_activity1, Search curriculum by Common Core standards, http://www.teachengineering.org/livinglabs/earthquakes/, Click to view other curriculum aligned to this Performance Expectation, Finding Epicenters and Measuring Magnitudes Worksheet, Finding Epicenters and Measuring Magnitudes (docx), Finding Epicenters and Measuring Magnitudes (pdf), Finding Epicenters and Measuring Magnitudes Example Answers (docx), Finding Epicenters and Measuring Magnitudes Example Answers (pdf), Earthquakes Living Lab: FAQs about P Waves, S Waves and More, Seismic Waves: How Earthquakes Move Through the Earth, Earthquakes Living Lab: Designing for Disaster, http://www.teachengineering.org/livinglabs/index.php, https://www.newpathonline.com/api_player/enus_54_6304/LXX/index.html. This is determined by the P-and S-wave arrival times. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. The distance is in kilometers. Finding the Epicenter Determine the epicenter distance from three different seismographs. Use the process of triangulation to locate an earthquake's epicenter. (Grades 6 - 8). Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. 0000033429 00000 n However, please review it for the specific setting, materials, students, and conventional safety precautions. HlRnQ?R\>BjK' An earthquake is what happens when two blocks of the earth suddenly slip past one directly above it on the surface of the earth is called the epicenter. Upload a document. The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). Subjects: 0000001746 00000 n 0000000016 00000 n triangulation: A method to determine exactly where an earthquake originates. long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? 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The instrument detects and documents the intensity, direction and duration of ground vibrations, which are used to determine the epicenters and strength/magnitudes of earthquakes or other seismic events. Locating Earthquake Epicenter Lab Answer Key buysms de. We have answers to the most popular questions from our customers. Free K-12 standards-aligned STEM curriculum for educators everywhere. A circle is drawn from each of the three different seismograph locations, where the radius of each circle is equal to the distance from that station to the epicenter.