I also will take them through the general process of how find the difference in arrival times of p- and s-waves can be used to find a distance to an earthquake and how using data from 3 seismograph stations is used to locate the epicenter. Practice with Triangulation: Locating an earthquake epicenter. cCV&0Lw1~c\4QA!{q: N3\`Lccgb,x/if`WH3(\'q)Da'@ | endstream endobj 92 0 obj <>/Filter/FlateDecode/Index[57 4]/Length 20/Size 61/Type/XRef/W[1 1 1]>>stream What data is used to determine magnitude? 0000079769 00000 n As the drum rotated, t, pen recorded the arrival of P, S, and surface, between arrival of P and S waves is called, epicenter, the longer the lag time measured, velocity, amplitude, and frequency of the. Practicing this technique, the students work several problems on a map of the US. 0000001777 00000 n Use the graph to answer the questions that follow. Locating the epicenter of an earthquake worksheet answer key, locating the epicenter of an earthquake worksheet pdf, chapter 7 lab 1 locating epicenters answer key, how many seismographs are needed to locate the epicenter of an earthquake. MS-ESS3-2. 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). 0000001861 00000 n Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory Locating Earthquake Epicenter Teaching Resources | TPT Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. Tips: Make sure students are reading the S waves and not the P waves. P and S arrivals, you can now locate an earthquake your answers below. Locating an Epicenter Activity - Arkansas Geological Survey 0000001736 00000 n earthquake though). 0000000016 00000 n Considered best for measuring small earthquakes (3.5 M or less). As you read and complete the activity, take notes so you can complete the. Finding the epicenter worksheet answer key. Figure 8. to the lag time measured at this location? You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. PDF. 0000001562 00000 n EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK In this activity, students use an online simulationVirtual Earthquakethat is accessible through the Earthquakes Living Lab interface, to locate the epicenter of an earthquake by making simple measurement on three seismograms, recordings of an earthquake's seismic waves detected by instruments (seismographs) far away from the earthquake. Graphs, charts, and images can be used to identify patterns in data. Please answer the following questions using the earthquake video shake, shake, shake. Add to FlexBook Textbook. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. Great exercise for Regents Earth Science. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. minutes? 1. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. HTn0MmcHCB Once three seismographs have been located, find the time interval between the arrival of the P-wave . !5(~q* These natural disasters may be mitigated, however, by insightful and creative engineering. Civil engineers, who design houses, apartment buildings, schools, skyscrapers, bridges, highways, tunnels, water treatment facilities, factories and other structures, may use this data to help them create safer structures that are less likely to sustain damage during earthquakes. 13. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. 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. 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. Figure 13.10). 0000009174 00000 n Make changes to the sample. 0000008845 00000 n How can you locate an earthquake's epicenter? Do limits exist on what science can predict? Activity 4: Locating an Earthquake Epicenter Examining Seismograms The three basic types of seismic wave generated by an earthquake at its focus are Pwaves, Swaves, and Surface waves. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. %PDF-1.4 % The travel-time graph The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. Locating An Earthquake Epicenter Worksheet Answers Key Facts & Information. 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. 2. between arrival of P and S waves is called 0000001893 00000 n 61 33 =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q The spot where those three circles intersect is the epicenter (Figure 13.12). Where the 3 circles intersect is the approximate location to the epicenter of the earthquake. 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. Last modified July 18, 2012. (Grades Solved ACTIVITY 2B Locating an Earthquake Figure 5 shows - Chegg directly above it on the surface of the earth is called the epicenter. 0000004511 00000 n 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. minutes = 6 minutes. 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). ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! $8.25. If the lag time were measured at a location closer to the epicenter, The period of a wave is the time between two adj, How does the period of the P waves compare to t. Use data from seismograms to locate the epicenters of earthquakes. PDF EARTHQUAKES: Epicenter Determination, Seismic Waves, and Hazards - WOU Do you agree with this alignment? 0000002658 00000 n Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. 0000000956 00000 n How does distance from the epicenter affect the S-P time interval? The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. 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 . 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. 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. 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." First, determine the P-wave arrival, and read down to the bottom of the seismogram to note at what time (usually marked in seconds) that the P-wave arrived. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. technology, engineering or math (STEM) educational standards. 6.17: Locating Earthquake Epicenters - K12 LibreTexts As the drum rotated, the 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. Please answer the following questions using the earthquake video - shake, shake, shake. Hand out the worksheets to the groups and direct them to read through the instructions. Describe the process of triangulation to locate an epicenter. aqmd. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream 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 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 3. Finding the Epicenter Determine the epicenter distance from three different seismographs. Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. to the lag time measured at this location? The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. What are those limits? Add to Library. This is determined by the P-and S-wave arrival times. Use Figure 5 and the travel-time graph in Figure 4 to determine . Construct an oral and written argument supported by empirical evidence and scientific reasoning to support or refute an explanation or a model for a phenomenon or a solution to a problem. The arrival of seismic waves will be recognized by an increase in amplitude look for a pattern change as lines get taller and more closely spaced (ex. 0000002507 00000 n These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). DocHub v5.1.1 Released! 12), computer or other device with Internet access, journal or writing paper for each student. In this activity, students use an online simulationVirtual Earthquakethat is accessible through the Earthquakes Living Lab interface, to locate the epicenter of an earthquake by making simple measurement on three seismograms, recordings of an earthquake's seismic waves detected by instruments (seismographs) far away from the earthquake. What did it feel like? (from left to right). 0000001978 00000 n 0000002009 00000 n In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; 12 Earthquake Location Lab Answer Key Full PDF - www.yvc.moeys.gov Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. 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. 12), Evaluate ways that technology can impact individuals, society, and the environment. PDF Locating an Epicenter Activity - Arkansas Geological Survey 0000031066 00000 n Learn more How Can I Locate the Earthquake Epicenter? Expert Answer. Earthquakes & Volcanoes Test Review Answers. We have answers to the most popular questions from our customers. travel 3,000 miles. from the epicenter will be 14 8. PS: We do not share personal information or emails with anyone. Continue the discussion with the following questions (or assign these questions as homework): Have student groups explore one or more of the other two regions (Southern California and Japan) provided in the Virtual Earthquake simulation. minute apart, represent the passage of time 0000002094 00000 n Locating Epicenter Lab Worksheet (1).docx, Updating Patient Registration B at 08_10_2022 03_03 PM.pdf, You need to deploy an Azure environment that meets the company migration plan, Step 1 of 2 Program 1 A Simple Python Program Welcome with Two Messages Running, More women in academia report polarization assimilation in male skewed and male, A TACACS B RADIUS C Kerberos D SAML Correct Answer D QUESTION 321 A network, PTSD in Children and Adolescents - Copy - Copy - Copy - Copy.docx, Effects of Excitation and Prime Mover Control The excitation control helps to, D1 Fundamental security design principles.docx, Question 5 Correct Mark 100 out of 100 Remove flag Question 6 Correct Mark 100, Thomas Concurrence broadly attacked current NDD Federal gov should be allowed to, 769 Water at 15C is to be heated to 65C by passing it over a bundle of 4 m. Course Hero is not sponsored or endorsed by any college or university. It shows the time required for P 0000003991 00000 n The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . Cross), Give Me Liberty! How far do S waves travel in 5 9 - Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. 0000001862 00000 n Civilization and its Discontents (Sigmund Freud), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Psychology (David G. Myers; C. Nathan DeWall), The Methodology of the Social Sciences (Max Weber), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. If the lag time were measured at a location closer to the epicenter, how would it compare 0000006011 00000 n earthquake lab lab: locating the epicenters of earthquakes objective measurable learning outcomes use data from seismograms to locate the epicenters of Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew My Library Discovery Institutions Western Governors University Southern New Hampshire University A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D 0000005081 00000 n The farther a station is from the A little under 30 seconds, maybe around 26 seconds. 0000106240 00000 n Earthquakes and Seismic Waves Key Concepts . velocity, amplitude, and frequency of the !D,X2:azTG)kPT~Mj 4>d w@O'. Material is sheared side to side, perpendicular to the direction of wave propagation. This is determined by the P-and S-wave arrival times. Review their answers to assess their base knowledge of the subject matter. %PDF-1.5 % 0000003254 00000 n endstream endobj startxref 0000098546 00000 n Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. 9 - Short for "primary wave" or "pressure wave." distance = travel time for S waves For example, locating the epicenter of an earthquake activity - TeachersPayTeachers Then do the same for the S-wave. 0000008088 00000 n Millions of people witnessed the motion of the earthquake on television. hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! Triangulation is required to determine exactly where it happened. Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. 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) . Earthquake Location 2 Using the skills that you acquired in the picking P and S arrivals, you can now locate an earthquake using real seismic records. How Can I Locate the Earthquake Epicenter? | Michigan Technological hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? 0 P wave. As discussed earlier in this lesson, this method of determining the epicenter of an . Alignment agreement: HtA1D41`s(GME$Ke*YdEOYf2-:r. Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. 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? Reading Strategy. 0000078100 00000 n The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. 13.4: Locating an Earthquake Epicenter - Geosciences LibreTexts
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