activity 4 locating an earthquake epicenter answer key

=Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Today we will be using a traveltime graph, where the vertical separation between, the P and S curves is equal to the difference in the arrival times between the Pwave, and Swave. Details. from the epicenter will be 14 8. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. U.S. Geological Survey, U.S. Department of the Interior. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Today, most seismologists no longer follow Richter's original methodology because it does not give reliable results when applied to stronger earthquakes and it was not designed to use data from earthquakes recorded at epicentral distances greater than ~600 km. Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. 1) Identify the general term for waves released from an earthquake. Three seismographs are needed. We additionally manage to pay for . When the tension becomes too great, the fault slips, causing an earthquake. Please answer the following questions using the earthquake video shake, shake, shake. 0000001143 00000 n [*aiLG?+J\QI86~}ooRrr!pm}dk@dBbZPMZlC4C\9^ SM.R\!H+$|+DUzt^w{" %&{KXjT'9yzT^UFe:+f(`PU_9%EW@\)?i qp!\G Z endstream endobj 75 0 obj <>stream The spot where those three circles intersect is the epicenter (Figure 13.12). So next, students compute the magnitude of this same earthquake by looking at the three simplified seismograms again, but this time selecting each's maximum S wave amplitude (height). earthquake though). Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. Overhead transparency of each of the handouts, Overhead projector (contact classroom teacher about this) and screen, Optional: overhead transparency or PowerPoint of, What do you know about the causes and impacts of Earthquakes? Do you think we will someday be able to prevent earthquakes? ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! What data is used to determine magnitude? If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. moment magnitude scale: Similar to the Richter scale, but replacing its use starting in the 1970s for more accuracy in measuring big earthquakes (magnitudes > 3.5) from greater distances. Direct students to finish the activity by completing the. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). endstream endobj startxref 0000002094 00000 n surface wave? Make arrangements so that each student group has a computer with Internet access. within type by subtype, then by grade, etc. S wave: The second seismic wave of an earthquake. This page titled 13.4: Locating an Earthquake Epicenter is shared under a CC BY-SA license and was authored, remixed, and/or curated by Deline, Harris & Tefend (GALILEO Open Learning Materials) . P and S arrivals, you can now locate an earthquake your answers below. Locating The Epicenter Of An Earthquake Worksheet Answers, Content Outline Earthquakes For Teaching - Mrs. Parsiola's Homepage, Earthquakes & Volcanoes Test Review Answers, Earthquake Facts & Worksheets | Mechanism, Impact, Events, Quiz & Worksheet - Causes Of Earthquakes - Study.com, 15 Bill Nye - Earthquakes Worksheet Key | PDF - Scribd, Bill Nye-The Science Guy * - Biloxi Public Schools, psc plus two level preliminary exam syllabus pdf 2023, first tuesday real estate principles exam answers, ies exam pattern for mechanical engineering, resultados examen practico dgt las palmas, exame de sangue precisa de quanto tempo de jejum, sslc question paper 2023 karnataka pdf with answers social science, examen de formacion civica y etica tercer grado secundaria, ctet exam date 2023 application form last date, why is it important to do self breast exams, quanto tempo depois de infectado pelo hiv aparece no exame. The calculated distance from each seismometer to the earthquake is shown as a circle. (5 minutes) Discuss how gathering information on epicenters can be applied. In this investigation, participants will understand that S and P waves are used to find the epicenter of an earthquake by using seismograph data to triangulate an epicenter. The magnitude is the logarithm of the amplitude of the ground wave. To complete the activity, some prior . This investigation is considered generally safe to do with students. What data is used to determine magnitude? %PDF-1.5 % The travel-time graph Add to FlexBook Textbook. 100 km 4.1 km/s 24.4 s; Finding the epicenter (continued) data table analyze and conclude answer the following questions on a separate sheet of paper. Triangulation is required to determine exactly where it happened. aqmd. Choose an answer and hit 'next'. Use this information to complete the following. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. H\0y located 1,000 miles from the This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. The nations most famous fault is the San Andreas Fault, which runs along a north-south trend in southern California, and happens to run directly through Los Angeles. Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory Richter scale Method of earthquake measurement based on the amplitude of seismic . 87 0 obj <> endobj xref 87 28 0000000016 00000 n Also commonly termed the focus. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. All the arcs should intersect at a common point - the epicenter. 0000001861 00000 n Answer the following questions in the spaces provided. Thanks for your feedback! One seismogram indicates the distance to the epicenter. minutes and P waves 8 minutes to They use three seismographs in a process called triangulation to determine earthquake epicenters. 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As discussed earlier in this lesson, this method of determining the epicenter of an . A little under 30 seconds, maybe around 26 seconds. Take a few minutes to read the information on the left side of this page for the 2010 earthquake off the coast of central Chile. different types of seismic waves. Hand out the worksheets to the groups and direct them to read through the instructions. The earthquake occurred somewhere along that circle. 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." To accurately locate an earthquake epicenter, records from three. P wave. (Grades 9 - 12). Do you agree with this alignment? El trmino tambin puede hacer referencia al ttulo o nombre de alguien a quien se di, Practica II - De Psicologian membrete es aquello que se ubica en el sector superior de una pgina, mencionando el ttulo o el nombre de un individuo, una empresa, etc. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 12), Analyze and interpret data about natural hazards using direct and indirect evidence The answer is the San Andreas Fault. Alignment agreement: Question: ACTIVITY 2B Locating an Earthquake Figure 5 shows seismograms for the same earthquake recorded at three locations-New York; Nome, Alaska; and Mexico City. 0000001746 00000 n m>r/Q[6 0000000856 00000 n epicenter, the longer the lag time measured 0000030504 00000 n Wikipedia, The Free Encyclopedia. What did it feel like? Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. 0 Apr 8, 2020 One seismogram indicates the distance to the epicenter. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. 83 0 obj <> endobj 0000001862 00000 n Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. 0000002544 00000 n CH 02 HW - Chapter 2 physics homework for Mastering, Leadership class , week 3 executive summary, I am doing my essay on the Ted Talk titaled How One Photo Captured a Humanitie Crisis https, School-Plan - School Plan of San Juan Integrated School, SEC-502-RS-Dispositions Self-Assessment Survey T3 (1), Techniques DE Separation ET Analyse EN Biochimi 1, Use a travel-time graph to convert lag time into distance. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. 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. What types of engineers might use this data the most? Geologists use seismic waves to locate an earthquake's epicenter. Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. (from left to right). Dochub is the best editor for changing your documents online. HtA1D41`s(GME$Ke*YdEOYf2-:r. Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . Reading Strategy. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. 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 A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, (Figure 3):. Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. 107 0 obj <>stream To locate the epicenter of the earthquake, seismologists use the . Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. Subject Areas: Take a few minutes to read the information on the left side of this page for the 2010 earthquake off the coast of central Chile. 0000030968 00000 n How is the magnitude of an earthquake determined? Epicenter. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. 0000001408 00000 n Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. 9 - 0000003855 00000 n The simulation renders three circles on a map and directs students to find the epicenter. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream Thanks for your feedback! Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . Expert Answer. Note the differences in Figure 8. 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https://geo.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fgeo.libretexts.org%2FLearning_Objects%2FLaboratory%2FBook%253A_Laboratory_Manual_For_Introductory_Geology_(Deline_Harris_and_Tefend)%2F13%253A_Earthquakes%2F13.04%253A_Locating_an_Earthquake_Epicenter, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), status page at https://status.libretexts.org. 0000002658 00000 n Finally, the location of the 3 seismographs are placed on a map and the distance to the epicenter is used to draw a circle with an origin at each seismograph and a radius equal to the distance to the epicenter as taken from each seismogram. Every earthquake is recorded on numerous seismographs located in different directions. Considered best for measuring small earthquakes (3.5 M or less). 0000001562 00000 n (Grades 6 - 8). Make an overhead copy of each of the handouts. HS-PS4-1. 0000006538 00000 n The hypocenter is the point within the earth where an earthquake rupture starts. Click for facts and worksheets in PDF! 0000004224 00000 n use slide 6 and answer key slide 7 how can i locate the earthquake epicenter michigan web the epicenter of the earthquake is somewhere on the edge of that circle do the 1. Doing this generates an S-P interval graph (time vs. distance, called the travel-time curve graph) from which they determine and select three epicentral distances. For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. While earthquake locations are normally done with a computer that can quickly determine the paths of seismic waves through the Earth to many seismic stations, 15 Introduction to Geology Chapter Worksheet . Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. 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. Thus, the Richter scale is used for measuring small earthquakes (3.5 M or less), while the moment magnitude scale is used for measuring stronger earthquakes (3.5 M or higher). When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. 1. Describe the logarithmic nature of the earthquake magnitude scale. Privacy Policy, Seismograms from seismic stations in Fresno, CA, Phoenix, AZ, and Las Vegas, NV, A modified travel time curve for S-P wave, A Modified Travel Time Curve for S-P Wave. HTn0MmcHCB Use Figure 4.5 and the travel-time graph in Figure 4.4 to determine the distance between each station and THREE SEISMOGRAMS the epicenter. The real-world earthquake data is viewable via a graphical interface using a scaling map. Figure 13.10). directly above it on the surface of the earth is called the epicenter. Students also investigate which structural designs are most likely to survive an earthquake. Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. Finding the epicenter worksheet answer key. Objective Use data from seismograms to locate the epicenters of earthquakes. Seismograms Learn more How Can I Locate the Earthquake Epicenter? Last modified July 18, 2012. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. Moment magnitude scale. Focus. 0000002507 00000 n Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. minute apart, represent the passage of time Swaves arrive at the seismic station after the Pwaves. Earthquakes and Seismic Waves Key Concepts . HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK 0000115324 00000 n 9 - It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. 4. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. 0000007783 00000 n Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. 0000098546 00000 n We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. velocity, amplitude, and frequency of the It shows the time required for P 0000006011 00000 n Add to Library. Material is sheared side to side, perpendicular to the direction of wave propagation. PS: We do not share personal information or emails with anyone. Seismic stations detect earthquakes by the tracings made on seismographs. and S waves to travel any distance up to HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N Z./$E )H %C[5ph[BUyGh7|!XPQiDjJ(|BNvylk+g;9G(#Aby>Jcf`XmnwtDD+;Z^I&Sb-4!7oi` L7 endstream endobj 78 0 obj <> endobj 79 0 obj <>stream EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream 61 33 As the drum rotated, the How does the period of the P waves compare to the period of the surface waves? Now on the main page of the Earthquakes Living Lab website (see Figure 2), note the featuring of four active seismic areas and the mapping of real-time and current data from earthquakes happening around the world. Figure 2. 0000002383 00000 n 0000003254 00000 n Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. and S waves depends on the distance from the epicenter of the answer the following question. Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). Step 1: ans- d) 65 seconds Ste . You will analyze the records and locate the earthquake using a method known Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. While no one can predict earthquakes, knowing the intensities, frequencies and locations of past earthquakes and fault planes helps us to better anticipate the locations and forces to expect, so we can do our best to prepare our communities and infrastructure to withstand them safely. 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. Thus technology use varies from region to region and over time. American Geosciences Institute.

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activity 4 locating an earthquake epicenter answer key