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. 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. Triangulation to Locate an Earthquake | U.S. Geological Survey How far do S waves travel in 5 https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. Next, have student groups answer the eight questions in the. Using the real-world data in the living lab enables students and teachers to practice analyzing data to solve problems and answer questions, in much the same way that scientists and engineers do every day. DOC Home - Westerville City Schools Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. Cross), Give Me Liberty! ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. Use this information to complete the following. As you read and complete the activity, take notes so you can complete the. Explains how to find an earthquake epicenter using at least three seismograph stations. PDF Locating an Epicenter Activity - Arkansas Geological Survey 0000008088 00000 n Details. Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. %PDF-1.5 % ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows - Chegg 0000001562 00000 n For example, A little under 30 seconds, maybe around 26 seconds. endstream endobj startxref It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. 0000009174 00000 n A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D Last modified July 18, 2012. Practicing this technique, the students work several problems on a map of the US. Finding the Epicenter. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif We additionally manage to pay for . They use three seismographs in a process called triangulation to determine earthquake epicenters. This worksheet focuses on using the p and s graph to find different variables. P and Swaves are body waves and travelthrough the interior of the earth. consider a seismograph stationed 3, As discussed earlier in this lesson, this method of determining the epicenter of an . We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. xb``d``Id`a`Ab@_ :iWGi>|q` 92 0 obj <>/Filter/FlateDecode/ID[]/Index[83 25]/Info 82 0 R/Length 62/Prev 466624/Root 84 0 R/Size 108/Type/XRef/W[1 2 1]>>stream You can also download it, export it or print it out. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. This investigation is considered generally safe to do with students. Hand out the worksheets to the groups and direct them to read through the instructions. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream S waves. Activity 4 locating an earthquake epicenter answers: Fill out & sign If a quake is far from the seismograph, the P-waves arrive long before the S-waves. PDF Locating An Earthquake Epicenter Lab Answers - Full PDF atrial depolarization. BDF endstream endobj 74 0 obj <>stream The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. Seismic stations detect earthquakes by the tracings made on seismographs. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. The period of P waves is shorter, than the period of surface waves. Section 8.1 What Is an Earthquake? %%EOF Y$Kr;V6[;Dq vg~cx:A[^jCssupwD endstream endobj 80 0 obj <> endobj 81 0 obj <>stream P and Swaves are body waves and travel, through the interior of the earth. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. ?t?s=Yt '_( endstream endobj 76 0 obj <>stream (Source: USGS, Wikipedia). hbbd``b`$C`q9 X_$_g`bdxc`X 2. minutes = 6 minutes. We have answers to the most popular questions from our customers. Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. Dochub is the best editor for changing your documents online. 12), computer or other device with Internet access, journal or writing paper for each student. The lag time for any The, amount of time that passes between the Pwave arrival and the Swave arrival is. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . Section A - Operator Information 1. Introduction: Before student pairs look at the Earthquakes Living Lab, direct them to complete the Engage section of the Finding Epicenters and Measuring Magnitudes Worksheet, which asks them to apply any prior knowledge and/or speculate as to what the Richter magnitude scale is and what an epicenter is. Finding the epicenter worksheet answer key. American Geosciences Institute. They make a model of a seismographa measuring device that records an earthquake on a seismogram. Q(_?!6YV3B"\'9:4gTp*7^/P.X!skfkJ)1nG#a\{UD+iWM+ rQR]9SFTUPlM#"c:;tnsQPlu]Uyv?Ge}W;8cMA/x}'5clES~+}S+N7}wQ:/BkmI^" 5oqaBC[TRjq4.e}F:SQg{=u\xcg~EaZKReoC?oahJ` 'w endstream endobj 77 0 obj <>stream If a quake is far from the seismograph, the P-waves arrive long before the S-waves. However, please review it for the specific setting, materials, students, and conventional safety precautions. Notify the classroom teacher of technology needs (overhead projector). The USGS Earthquake Hazards Program is part of the National Earthquake Hazards Reduction Program (NEHRP), established by Congress in 1977, and the USGS Advanced National Seismic System (ANSS) was established by Congress as a NEHRP facility. velocity, amplitude, and frequency of the Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. How Can I Locate the Earthquake Epicenter? | Michigan Technological Choose an answer and hit 'next'. The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. To make a magnitude determination, two measurements are needed: the S-P interval (already determined earlier in the tutorial) and the maximum amplitude of the seismic waves. 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. Locating Earthquake Epicenter Lab Answer Key buysms de. 1. longer or shorter). The spot where those three circles intersect is the epicenter (Figure 13.12). Then do the same for the S-wave. The farther a station is from the 1. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. 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. epicenter of an earthquake, how What is the time lag for the Seattle, Washington, seismic station? 0000106240 00000 n Add to Library. 0 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. 12), Evaluate ways that technology can impact individuals, society, and the environment. If your seismograph station is Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. Three seismographs are needed. (Grades 9 - 12). So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. 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) . 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). distance = travel time for S waves Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. The moment magnitude scale (MMS) was developed in the 1970s as a modification of the Richter scale and is better for measuring big earthquakes but less good for small ones. Short for "secondary wave" or "shear wave." A circle with a radius of the distance to the quake can be drawn. Sharing Information/Thinking Ahead: In the Evaluate section of the worksheet, student pairs are asked to compose answers to two questionswhether they think seismology is a reliable science and ways seismic data is useful for engineers. PDF EARTHQUAKE EPICENTER LOCATION EXERCISE - Idaho geology 17 Station St., Ste 3 Brookline, MA 02445. U.S. Geological Survey, U.S. Department of the Interior. 12), Analyze and interpret data about natural hazards using direct and indirect evidence Also called seismometer. a project of D2L (www.achievementstandards.org). Answer the following questions in the spaces provided. 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. What about P waves? Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. HS-PS4-1. Richter scale Method of earthquake measurement based on the amplitude of seismic . If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Learn more How Can I Locate the Earthquake Epicenter? Quick Tips. All rights reserved. [*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 epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. d>(ZvO= Add to FlexBook Textbook. Assess their understanding based on the thoroughness of their answers. P wave. miles from the epicenter of an 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. Epicenter Location on Earth's surface directly above the focus of the earthquake 5. ' endstream endobj 69 0 obj <> endobj 70 0 obj [85 0 R] endobj 71 0 obj <> endobj 72 0 obj <> endobj 73 0 obj <>stream 0000002658 00000 n 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. 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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. 87 0 obj <> endobj xref 87 28 0000000016 00000 n How are S and P waves used to determine how far away epicenters are? 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. /g$=#!$EbBbhD!,x so^6Uc})\uJs=fyY}j'|YjTm8B_[}*Ovm\[J'.mu?lQg,wzJM^X&P w>-T%*h%J4 yB@VPmP]@D------------,2dfY$"A!ANAASi)4$dniiiinH% Gxt5DJ) )9RRr$II'y ??O's^3@[{*{VT?nsNS!ilq]mFO?? !D,X2:azTG)kPT~Mj 4>d w@O'. (Figure 3):. Last updated November 26, 2013. 01. earthquake though). Thus technology use varies from region to region and over time. 0000000016 00000 n Earthquakes and Seismic Waves - carlisleschools.org What data is used to determine magnitude? at that station. waves from a distant earthquake. Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. Specifically, seismographs make recordings (seismograms) of the seismic waves generated from earthquakes, providing engineers and other researchers with data that they use to make predictions about future earthquakes. 0000001408 00000 n As the drum rotated, the Thanks for your feedback! For upper grades, have students work individually, do two of the three seismic area tutorials, and look up historical earthquakes to learn their magnitudes, and make data tables or graphs with this information. Seismograms Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. Every earthquake is recorded on numerous seismographs located in different directions. You will analyze the records and locate the earthquake using a method known Do you agree with this alignment? Why might the triangulation method not always produce an exact point (other than your measurement errors)? Locating_an_epicenter_activity - Activity4 - Course Hero This is determined by the P-and S-wave arrival times. 0000001893 00000 n Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. 0000001604 00000 n HTAn (Grades 6 - 8). earthquake - shaking and vibration of Earth's surface. Please answer the following questions using the earthquake video shake, shake, shake. The point beneath Earth's surface where rock breaks under stress and causes an earthquake. Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 Please answer the following questions using the earthquake video - shake, shake, shake. 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. If you draw a circle on a map around three different seismographs where the radius of each is the distance from that station to the earthquake, the intersection of those three circles is the epicenter. Mark the first arrival of the swave on each seismogram. What is an earthquake? 0000002544 00000 n The epicenter is the point directly above it at the surface of the Earth. In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; This is determined by the P-and S-wave arrival times. Figure 13.10). Great exercise for Regents Earth Science. endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream and S waves depends on the distance from the epicenter of the answer the following question. 1. 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. 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. pen recorded the arrival of P, S, and surface Use Figure 5 and the travel-time graph in Figure 4 to determine . Resources. 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?" 4. Earthquake Worksheet Answers 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. 0000003966 00000 n 0000098546 00000 n First locate and mark the three seismic stations on the world map provided below. 0000004769 00000 n triangulation: A method to determine exactly where an earthquake originates. 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." The spot where those three circles intersect is the epicenter (Figure 13.12). Activity 4: Locating an Earthquake Epicenter, The three basic types of seismic wave generated by an earthquake at its focus are P, waves, Swaves, and Surface waves. Type text, add images, blackout confidential details, add comments, highlights and more. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. (, Have any of you ever experienced an earthquake or know anyone who has? : 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. Thanks for your feedback! The time Practice with Triangulation: Locating an earthquake epicenter. (i. Locating an Earthquake's Epicenter - American Geosciences Institute activity 4 locating an earthquake epicenter The Science of Earthquakes | U.S. Geological Survey An earthquake is what happens when two blocks of the earth suddenly slip past one . 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. Tips: Make sure students are reading the S waves and not the P waves. Alignment agreement: (5 minutes) Discuss how gathering information on epicenters can be applied. locate and label the epicenter of the earthquake on this map. and S waves to travel any distance up to 0000001746 00000 n Wikipedia, The Free Encyclopedia. minute apart, represent the passage of time Mapping the history of natural hazards in a region, combined with an understanding of related geologic forces can help forecast the locations and likelihoods of future events. How might they use this information? Therefore, the lag This section explains what earthquakes and faults are and what causes earthquakes. 6. 0000078169 00000 n Describe the process of triangulation to locate an epicenter. 0000030240 00000 n Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an Epicenter. Earthquakes & Volcanoes Test Review Answers. Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. PDF Finding Epicenters and Measuring Magnitudes Worksheet What data is used to determine magnitude? Learn from this informative and clear video.Brought you by award-winning Once each student has constructed his or her circle on the map, mark with an X, the epicenter of the earthquake. Locating An Earthquake Epicenter Lab Answer Key travel 3,000 miles. 107 0 obj <>stream P wave: The first seismic wave of an earthquake. 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. Figure 1 is a simplified example of a Earthquakes and Seismic Waves Key Concepts . technology, engineering or math (STEM) educational standards. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. Mr Gneiss. Was there an initial quake followed by smaller quakes? 1. 12 Earthquake Location Lab Answer Key (PDF) - skislah.edu Web12-earthquake-location-lab-answer-key 1/1 Downloaded from skislah.edu.my on February 15, 2023 by guest 12 Earthquake Location Lab Answer Key Right here, we have countless ebook 12 Earthquake Location Lab Answer Key and collections to check out. 0000007783 00000 n 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. Review their answers to assess their base knowledge of the subject matter. 0000003991 00000 n 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? 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. (Grades Read through the sections What Is Seismology and What Are Seismic Waves?, Where Do Earthquakes Happen?, and Why Do Earthquakes Happen? to answer the following questions: What is the difference between S and P waves? 0000002383 00000 n time for any point that is 3,000 miles Make arrangements so that each student group has a computer with Internet access. Based on your answers to the previous question, what is the lag time for locations that are 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! 0000001777 00000 n Send activity 4 locating an earthquake epicenter worksheet answers via email, link, or fax. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. There are two sets of data and maps to do this activity/ lab for than once. 0000001143 00000 n minutes? 61 0 obj <> endobj xref 0000006538 00000 n Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. 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 The answer is the San Andreas Fault. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc Show students some of the numerous online animations comparing the movements of P and S waves. 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 In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. locating the epicenter of an earthquake activity - TeachersPayTeachers 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. Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . Locating an Epicenter Activity - Arkansas Geological Survey long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. PDF EARTHQUAKES: Epicenter Determination, Seismic Waves, and Hazards - WOU 0000004457 00000 n 0000055643 00000 n *The NGSS logo is a registered trademark of WestEd. 9 - Locating An Earthquake Epicenter Worksheet Answers Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). 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.