Question 5 of 22 4.55/ 4.55 Points Questions 5 through 11 are based on Lab Exercise #2: Locating the Epicenter of an Earthquake. (Source: USGS). gov For online instructions and current fees click here. To complete the activity, some prior . The real-world earthquake data is viewable via a graphical interface using a scaling map. 9 - Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. (Grades 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. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. Please answer the following questions using the earthquake video shake, shake, shake. endstream endobj startxref 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. The process is called triangulation. E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! Resources. seismogram. 1. H\0y This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 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) . and S waves depends on the distance from the epicenter of the answer the following question. How do we determine the epicenter of an earthquake? Three seismographs are needed. 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. Students learn how engineers build shake tables that simulate the ground motions of the Earth caused by seismic waves in order to test the seismic performance of buildings. Make arrangements so that each student group has a computer with Internet access. epicenter of an earthquake, how 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. What is the time lag for the Seattle, Washington, seismic station? To do this, have the students use, Find the epicenter of the earthquake on the map (. determine the epicenter using the S P (S minus P) method. 0000006984 00000 n Assess their understanding based on the thoroughness of their answers. endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream If you can't find an answer to your question, please contact us. Copyright 2023. All the arcs should intersect at a common point - the epicenter. 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 0000000016 00000 n 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. 0000078100 00000 n Share with Classes. minutes = 6 minutes. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. 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. Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. Add to FlexBook Textbook. They use three seismographs in a process called triangulation to determine earthquake epicenters. consider a seismograph stationed 3, For example, Wikipedia, The Free Encyclopedia. In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. Student exploration Graphing Skills SE Key Gizmos Explore Learning. HTAn 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). 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. 0000006538 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave . Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. Quick Tips. This section explains what earthquakes and faults are and what causes earthquakes. There are two sets of data and maps to do this activity/ lab for than once. Figure 1 is a simplified example of a HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! Do you think we will someday be able to prevent earthquakes? If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". You will receive your score and answers at the end. epicenter, the longer the lag time measured 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. 0000001861 00000 n 1) Identify the general term for waves released from an earthquake. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. How might they use this information? Review their answers to assess their base knowledge of the subject matter. The calculated distance from each seismometer to the earthquake is shown as a circle. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). As the drum rotated, the 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. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. 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. Please answer the following questions using the earthquake video - shake, shake, shake. (Figure 3):. Finding the epicenter worksheet answer key. The farther a station is from the (Grades 0000001777 00000 n If a quake is far from the seismograph, the P-waves arrive long before the S-waves. What did it feel like? Earthquakes and Volcanoes. For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. at that station. Why might the triangulation method not always produce an exact point (other than your measurement errors)? Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. The longer the time is between the P-and S-wave . %PDF-1.3 % 0000002094 00000 n 0000079769 00000 n n{6c&6NK*U;=9i%nF The magnitude is the logarithm of the amplitude of the ground wave. The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. distance from transducer to the focal point. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. velocity, amplitude, and frequency of the 12), computer or other device with Internet access, journal or writing paper for each student. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. (Source: USGS, Wikipedia). We additionally manage to pay for . You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. 11 minutes elapsed between the first P wave and the last measurable surface wave. "`B(R6sj [CX7p+s =#;~ `'kA Pwaves have the greatest velocity and reach theseismic station first. X!.43p2t!}SLx-3z.KN4X+H\+vk? 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. 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. Describe the logarithmic nature of the earthquake magnitude scale. Record your answer from Lab Exercise #2, Step 1. They make a model of a seismographa measuring device that records an earthquake on a seismogram. 0000001862 00000 n 0000115324 00000 n You can also download it, export it or print it out. pen recorded the arrival of P, S, and surface Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! time for any point that is 3,000 miles These natural disasters may be mitigated, however, by insightful and creative engineering. The earthquake occurred somewhere along that circle. 17 Station St., Ste 3 Brookline, MA 02445. Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. P and Swaves are body waves and travel, through the interior of the earth. MS-ESS3-2. Last modified July 18, 2012. hbbd``b`$C`q9 X_$_g`bdxc`X Every earthquake is recorded on numerous seismographs located in different directions. See Answer. 5 4. 0000001143 00000 n Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! Where the 3 circles intersect is the approximate location to the epicenter of the earthquake. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. lag time. During an earthquake, seismic waves are sent all over the globe. Make changes to the sample. (, 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. Click for facts and worksheets in PDF! The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. 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. 0000008088 00000 n by. *The NGSS logo is a registered trademark of WestEd. miles from the epicenter of an This is determined by the P-and S-wave arrival times. Epicenter Location on Earth's surface directly above the focus of the earthquake 5. Do limits exist on what science can predict? trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream 9 - 1,000 miles from the epicenter of an earthquake? 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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. 0000001746 00000 n graph. 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 (Grades 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. 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. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. Three seismographs are needed. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc 83 0 obj <> endobj If your seismograph station is 0000002383 00000 n Last updated November 26, 2013. Objective Use data from seismograms to locate the epicenters of earthquakes. Some places are more prone to earthquakes than others. As you read and complete the activity, take notes so you can complete the. 0000001893 00000 n important in helping seismologists determine the epicenter of the earthquake. Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. Make an overhead copy of each of the handouts. 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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? 9 - Earthquakes and Seismic Waves Key Concepts . 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How does the period of the P waves compare to the period of the surface waves? 0000003254 00000 n (Grades 6 - 8). Based on your answers to the previous question, what is the lag time for locations that are Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif This investigation is considered generally safe to do with students. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. Show students some of the numerous online animations comparing the movements of P and S waves. HS-PS4-1. Alignment agreement: It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. Edit your locating an earthquake epicenter worksheet answers online. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. Practice with Triangulation: Locating an earthquake epicenter. (i. Learn more How Can I Locate the Earthquake Epicenter? 0000001562 00000 n 0000007097 00000 n DocHub v5.1.1 Released! 0000030968 00000 n 1. 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 . 2. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. ?t?s=Yt '_( endstream endobj 76 0 obj <>stream Develop a solution to a technological problem that has the least negative environmental and social impact. Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. What types of engineers might use this data the most? The travel-time graph Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. 0000031066 00000 n We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 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. 0000010002 00000 n HlRnQ?R\>BjK' 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! The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . 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. 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 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). Then do the same for the S-wave. 0000001396 00000 n U.S. Geological Survey, U.S. Department of the Interior. (Grades We have answers to the most popular questions from our customers. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) 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. The lag time for any 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. 5. focus - the point within Earth where an earthquake originates. 9 - 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 the lag time were measured at a location closer to the epicenter, how would it compare 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. Thanks for your feedback! 107 0 obj <>stream 0000001604 00000 n 0000004224 00000 n The time Note the differences in Using this resource students find the arrival times of P-waves and S-waves using a seismogram.
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