Use the process of triangulation to locate an earthquake's epicenter. Notify the classroom teacher of technology needs (overhead projector). 0000001408 00000 n 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 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. The epicenter of an earthquake can be found using the difference between the arrival of the Primary and Secondary waves. 0000079769 00000 n Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. Alignment agreement: minute apart, represent the passage of time 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). (Grades (Grades 9 - 12). 1. Share with Classes. 0000001862 00000 n Figure 2 is a seismic wave travel-time Resources. After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. Graphs, charts, and images can be used to identify patterns in data. n{6c&6NK*U;=9i%nF Great exercise for Regents Earth Science. Therefore, the lag Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. 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! MS-ESS3-2. What did it feel like? 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. There are two sets of data and maps to do this activity/ lab for than once. 0000010002 00000 n 9 - 2. For this activity, select the "Chile" box. m>r/Q[6 This is determined by the P-and S-wave arrival times. Quick Tips. Have students turn in their answers for the Explain portion of the worksheet. 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. The spot where those three circles intersect is the epicenter (Figure 13.12). S wave: The second seismic wave of an earthquake. aqmd. Add to FlexBook Textbook. Pwaves have the greatest velocity and reach theseismic station first. To do this, have the students use, Find the epicenter of the earthquake on the map (. between arrival of P and S waves is called Dochub is the best editor for changing your documents online. 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You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. To locate the epicenter of the earthquake, seismologists use the . EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. (from left to right). 3. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory 74 Earthquake Activity: Locating the Epicenter and Time of 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) . (Grades 0000002507 00000 n hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! travel 3,000 miles. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. The distance is in kilometers. 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. 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. Point on Earth's surface directly above an earthquake's focus. How is the magnitude of an earthquake determined? 0000030240 00000 n 0000098546 00000 n 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. 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). Three seismographs are needed. triangulation: A method to determine exactly where an earthquake originates. Add to Library. 0000115324 00000 n The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. 0000002544 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave . 0000001533 00000 n approximate period of the surface waves in seconds? 0000003991 00000 n waves from a distant earthquake. What data is used to determine magnitude? Must engineers be content with mitigating disasters, instead of preventing them? Record your answer from Lab Exercise #2, Step 1. Scientists use triangulation to find the epicenter of an earthquake. 0000005544 00000 n Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. This investigation is considered generally safe to do with students. 0000001861 00000 n 61 33 Success is figuring out that the estimated magnitude is 5.9. In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. The earthquake occurred somewhere along that circle. [N'. 0000053998 00000 n Edit your locating an earthquake epicenter worksheet answers online. Learn more How Can I Locate the Earthquake Epicenter? Make arrangements so that each student group has a computer with Internet access. Hand out the worksheets to the groups and direct them to read through the instructions. 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. HtA1D41`s(GME$Ke*YdEOYf2-:r. (Grades The magnitude determination is based on seismic data. These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. Cross), Give Me Liberty! Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. First locate and mark the three seismic stations on the world map provided below. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. Student exploration Graphing Skills SE Key Gizmos Explore Learning. 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 View Notes - Locating_an_epicenter_activity from SCIENCE Earth Scie at Toms River High North. 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. Focus. 87 0 obj <> endobj xref 87 28 0000000016 00000 n Assess their understanding based on the thoroughness of their answers. 0000078100 00000 n 0000103591 00000 n 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. Thus technology use varies from region to region and over time. Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Earthquakes & Volcanoes Test Review Answers. We additionally manage to pay for . 5. focus - the point within Earth where an earthquake originates. Every earthquake is recorded on numerous seismographs located in different directions. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. 0000001562 00000 n a project of D2L (www.achievementstandards.org). Do you agree with this alignment? 9 - In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 0000000016 00000 n 0000001746 00000 n How does distance from the epicenter affect the S-P time interval? Ask students what fault they think caused this earthquake. Describe the process of triangulation to locate an epicenter. distance from transducer to the focal point. 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. Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. Apr 8, 2020 One seismogram indicates the distance to the epicenter. This is determined by the P-and S-wave arrival times. Run through the investigation yourself and record the data, just to see how long it takes. (Grades 6 - 8). Sixty-seven people lost their lives, and property damage was estimated at $6 billion. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. Develop a solution to a technological problem that has the least negative environmental and social impact. 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). 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. Last modified July 18, 2012. This section explains what earthquakes and faults are and what causes earthquakes. (Source: USGS, Wikipedia). 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! 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). 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. Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Free K-12 standards-aligned STEM curriculum for educators everywhere. 9 - HlRnQ?R\>BjK' A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. P wave. ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows seismograms for the same earthquake recorded at three locations - New York, Nome, Alaska, and Mexico City. Use the graph to answer the questions that follow. The longer the time is between the P-and S-wave . P and Swaves are body waves and travel, through the interior of the earth. Virtual Earthquake (tutorial/simulation) 1996. important in helping seismologists determine the epicenter of the earthquake. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. 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. 5 4. 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." Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. 500p;333aXb3 \a.1. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. Mr Gneiss. 0000001396 00000 n Subjects: 0000003966 00000 n Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). ?t?s=Yt '_( endstream endobj 76 0 obj <>stream Then do the same for the S-wave. Use Figure 5 and the travel-time graph in Figure 4 to determine . Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. 0000033429 00000 n Earthquakes occur along faults, which are cracks in the Earths crust that build tension. 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. 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 spot where those three circles intersect is the epicenter (Figure 13.12). 0000002658 00000 n trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream 17 Station St., Ste 3 Brookline, MA 02445. Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. (i. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. A circle with a radius of the distance to the quake can be drawn. Objective Use data from seismograms to locate the epicenters of earthquakes. Make an overhead copy of each of the handouts. Finding the epicenter of an Earthquake by Ah - Ha Lessons 5.0 (1) $3.00 PDF Activity This lesson teaches the student the process scientists use to locate the epicenter of an EQ. %PDF-1.4 % (Listen to student ideas.) gov For online instructions and current fees click here. technology, engineering or math (STEM) educational standards. The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. The time The travel-time graph 0000006011 00000 n To accurately locate an earthquake epicenter, records from three. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. Richter scale Method of earthquake measurement based on the amplitude of seismic . Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif follow our easy steps to get your lab activity locating epicenters answer key well prepared rapidly choose the template in the library enter all necessary information in the required llable areas the Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . This is determined by the P-and S-wave arrival times. 0000008845 00000 n 0000000956 00000 n Was there an initial quake followed by smaller quakes? What is the This worksheet focuses on using the p and s graph to find different variables. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK Practice with Triangulation: Locating an earthquake epicenter. 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. You will receive your score and answers at the end. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. As discussed earlier in this lesson, this method of determining the epicenter of an . 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. 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. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. It shows the time required for P The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. Thanks for your feedback! El trmino tambin puede hacer referencia al ttulo o nombre de alguien a quien se diri, Online Education Strategies (UNIV 1001 - AY2021-T), Advanced Care of the Adult/Older Adult (N566), Advanced Design Studio in Lighting (THET659), Introduction to Health Information Technology (HIM200), Biological Principles II and Lab (BIOL 107/L), PHIL ethics and social responsibility (PHIL 1404), Foundational Concepts & Applications (NR-500), Introduction To Project Management Software (CSBU539), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), BSC 2085-Study Guide - Dr. Alfonso Pino - Online course, Lecture notes, lecture all lectures - lecture notes from professor alan klein, Full Graded Quiz Unit 3 - Selection of my best coursework, EES 150 Lesson 2 Our Restless Planet Structure, Energy, & Change, General Chemistry I - Chapter 1 and 2 Notes, 1-2 Short Answer- Cultural Objects and Their Culture, Historia de la literatura (linea del tiempo), ACCT 2301 Chapter 1 SB - Homework assignment. 0000002094 00000 n The magnitude is the logarithm of the amplitude of the ground wave. 0000002383 00000 n 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. 12), computer or other device with Internet access, journal or writing paper for each student. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . earthquake - shaking and vibration of Earth's surface. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. The point of origin of an earthquake is called its focus and the point on the Earth's surface directly above the focus is the epicenter. One seismogram indicates the distance to the epicenter. 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 endstream endobj startxref During an earthquake, seismic waves are sent all over the globe. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. Legal. 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

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