activity 4 locating an earthquake epicenter answer key activity 4 locating an earthquake epicenter answer key

0000006984 00000 n To complete the activity, some prior . Practice with Triangulation: Locating an earthquake epicenter. 0000007097 00000 n Adjust the timing to the class period, remembering that you will need time to introduce the investigation, clean up afterwards, and re-set up for the next class (if you are working with more than one class). hbbd``b`$C`q9 X_$_g`bdxc`X 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"? Make arrangements so that each student group has a computer with Internet access. 0000001143 00000 n Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) 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. 0000007783 00000 n 0000001862 00000 n 0000002009 00000 n Lab 8 - earthquake lab - Lab: Locating the Epicenters of Earthquakes 0000115324 00000 n 0000055643 00000 n Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. HtA1D41`s(GME$Ke*YdEOYf2-:r. A seismograph is securely mounted onto the surface of the earth so that when the earth shakes, the entire unit shakes with it EXCEPT for the mass on the spring, which has inertia and remains in the same place. Mark the first arrival of the swave on each seismogram. Zip. : 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. You will receive your score and answers at the end. Ask students what fault they think caused this earthquake. endstream endobj startxref This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 0000003855 00000 n time for any point that is 3,000 miles Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. 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." determine the epicenter using the S P (S minus P) method. (Grades Epicenter is the location on the surface of the Earth directly above where the earthquake starts. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. Make changes to the sample. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). We have answers to the most popular questions from our customers. Hands-on Activity Earthquakes Living Lab: Finding Epicenters The spot where those three circles intersect is the epicenter (Figure 13.12). 0000000956 00000 n 0000002094 00000 n Legal. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc Earthquakes and Seismic Waves - carlisleschools.org Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. 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. What data is used to determine magnitude? How far do S waves travel in 5 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. In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. Next, have student groups answer the eight questions in the. trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream velocity, amplitude, and frequency of the 0000001777 00000 n We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . The period of a wave is the time between two adjacent wave peaks. PDF Example Answers - TeachEngineering Send activity 4 locating an earthquake epicenter worksheet answers via email, link, or fax. locating the epicenter of an earthquake activity - TeachersPayTeachers Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. All rights reserved. The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. Make an overhead copy of each of the handouts. 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. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. S waves. 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. See Answer. Swaves arrive at the seismic station after the Pwaves. The earthquake occurred somewhere along that circle. 0000004060 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. Cross), Give Me Liberty! *The NGSS logo is a registered trademark of WestEd. 9 - 0000004769 00000 n trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream However, please review it for the specific setting, materials, students, and conventional safety precautions. 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. 0000005544 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 surface wave? 0000006011 00000 n Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). Reading Strategy. BDF endstream endobj 74 0 obj <>stream For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. What was the lag time (in minutes) at this location? Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. 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. Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. Learn more How Can I Locate the Earthquake Epicenter? Pwaves have the greatest velocity and reach theseismic station first. Locating Earthquake Epicenter Worksheet Answer Key Notify the classroom teacher of technology needs (overhead projector). Locating an Earthquake's Epicenter - American Geosciences Institute 5 4. This section explains what earthquakes and faults are and what causes earthquakes. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C 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. 0000008845 00000 n Upload a document. minute apart, represent the passage of time Also called seismometer. Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. How Can I Locate the Earthquake Epicenter? | Michigan Technological In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. You can also download it, export it or print it out. (from left to right). Mr Gneiss. 0000030240 00000 n Copyright 2023. All the arcs should intersect at a common point - the epicenter. How does the Mad Scientist. How is the magnitude of an earthquake determined? Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an Based on your answers to the previous question, what is the lag time for locations that are (Listen to student ideas.) Was there an initial quake followed by smaller quakes? Follow this simple guide to edit Locating the epicenter of an earthquake worksheet answer key in PDF format online free of charge: Explore all the advantages of our editor right now! 12), Seek, evaluate, and use a variety of specialized resources available from libraries, the Internet, and the community to find scientific information on Earth's history Click for facts and worksheets in PDF! Tips: Make sure students are reading the S waves and not the P waves. 0000001604 00000 n Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. (Grades 0000002658 00000 n inch = 500 km. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. The distance is in kilometers. 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. follow our easy steps to get your lab activity locating epicenters answer key well prepared rapidly choose the template in the library enter all necessary information in the required llable areas the distance = travel time for S waves Figure 2 is a seismic wave travel-time 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. You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. 87 0 obj <> endobj xref 87 28 0000000016 00000 n 0000106240 00000 n to the lag time measured at this location? The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, 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 Millions of people witnessed the motion of the earthquake on television. Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 The farther a station is from the 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. 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. 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. How might they use this information? 0000001861 00000 n They use three seismographs in a process called triangulation to determine earthquake epicenters. What is the time lag for the Seattle, Washington, seismic station? 0000001736 00000 n Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. 3000 miles. 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. 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. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). PDF Locating an Epicenter Activity - Arkansas Geological Survey 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. Then do the same for the S-wave. epicenter of an earthquake, how HlRnQ?R\>BjK' 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 These natural disasters may be mitigated, however, by insightful and creative engineering. The, amount of time that passes between the Pwave arrival and the Swave arrival is. PDF Finding Epicenters and Measuring Magnitudes Worksheet (Grades travel 3,000 miles. USGS Earthquake Hazards Program (Figure 3):. (, Find the S-P interval for each seismogram and record answers in the S-P column of, Find the distance to the epicenter (in kilometers) from each recording station and record answers in Table 1. 0000001978 00000 n If the lag time were measured at a location closer to the epicenter, how would it compare 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. Quick Tips. (Grades 9 - 12). Finding the Epicenter Determine the epicenter distance from three different seismographs. question 1 of 3. locate and label the epicenter of the earthquake on this map. minutes = 6 minutes. Figure 1 is a simplified example of a Thanks for your feedback! 83 0 obj <> endobj 0000000856 00000 n pen recorded the arrival of P, S, and surface P and Swaves are body waves and travelthrough the interior of the earth. 9 - Short for "secondary wave" or "shear wave." 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. 0000030968 00000 n To accurately locate an earthquake epicenter, records from three. Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. earthquake though). U.S. Geological Survey, U.S. Department of the Interior. long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? 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. Considered best for measuring small earthquakes (3.5 M or less). Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. This is determined by the P-and S-wave arrival times. Locating An Earthquake Epicenter Worksheet Answers 0000002840 00000 n 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. 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. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. Pwaves have the greatest velocity and reach the, seismic station first. 2. minutes and P waves 8 minutes to A little under 30 seconds, maybe around 26 seconds. Do limits exist on what science can predict? Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. 0000030504 00000 n Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. 17 Station St., Ste 3 Brookline, MA 02445. How can you locate an earthquake's epicenter? Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. consider a seismograph stationed 3, It takes S waves 14. Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. 0000001675 00000 n Subjects: E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! What is an earthquake? Type text, add images, blackout confidential details, add comments, highlights and more. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. Locating Earthquake Epicenter Lab Answer Key buysms de. When the tension becomes too great, the fault slips, causing an earthquake. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. Three seismographs are needed. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes.