Note the differences in Identify P, S, and surface waves on seismograms, Measure amplitude and lag time on seismograms, Use triangulation to accurately locate the epicenter of an earthquake, Accurately report the latitude and longitude of the epicenter, Sea Floor Lab Help with Problem 2 - Tagged, Metamorphic Rocks Lab Instructions - Tagged, Lab exam 2 - Study guide for the second exam regarding all the labs and material covered, Redaccion de textos II Marco n 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. P wave: The first seismic wave of an earthquake. Figure 1 is a simplified example of a Also commonly termed the focus. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif The epicenter is the point directly above it at the surface of the Earth. 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? Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. It takes S waves 14. lag time. 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Success is figuring out that the estimated magnitude is 5.9. 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. Key Facts & Information. What is the Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. graph. 0000001746 00000 n In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. Section 8.1 What Is an Earthquake? 0 500 1000 1500 2000 2500 3000 MS-ESS3-2. The farther away the epicenter is, the greater the difference . Student exploration Graphing Skills SE Key Gizmos Explore Learning. U.S. Geological Survey, U.S. Department of the Interior. Geologists use seismic waves to locate an earthquake's epicenter. The simulation renders three circles on a map and directs students to find the epicenter. 0000003855 00000 n Millions of people witnessed the motion of the earthquake on television. Review their answers to assess their base knowledge of the subject matter. 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. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q Figure 2 is a seismic wave travel-time %PDF-1.3 % 9 - Wikipedia, The Free Encyclopedia. endstream endobj startxref The distance is in kilometers. 0000006984 00000 n Develop a solution to a technological problem that has the least negative environmental and social impact. question 1 of 3. (Grades 6 - 8). 12), Analyze and interpret data about natural hazards using direct and indirect evidence So next, students compute the magnitude of this same earthquake by looking at the three simplified seismograms again, but this time selecting each's maximum S wave amplitude (height). 100 km 4.1 km/s 24.4 s; Finding the epicenter (continued) data table analyze and conclude answer the following questions on a separate sheet of paper. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK Three seismographs are needed. Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. 107 0 obj <>stream The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). Point on Earth's surface directly above an earthquake's focus. located 1,000 miles from the (Grades minute apart, represent the passage of time If a quake is far from the seismograph, the P-waves arrive long before the S-waves. 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. Type text, add images, blackout confidential details, add comments, highlights and more. travel 3,000 miles. 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 All rights reserved. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. To locate the epicenter of the earthquake, seismologists use the . During an earthquake, seismic waves are sent all over the globe. Expert Answer. 4. fault - a fracture in Earth's crust where the rocks on either side have moved. 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. HS-PS4-1. 5 4. Every year, earthquakes cause death and destruction worldwide. How might they use this information? Resources. Mr Gneiss. (Grades Have students turn in their answers for the Explain portion of the worksheet. These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). 0000003254 00000 n Edit your locating an earthquake epicenter worksheet answers online. long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? Add to Library. endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, determine the epicenter using the S P (S minus P) method. Seismic Waves. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. Thanks for your feedback! 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. (5 minutes) Discuss how gathering information on epicenters can be applied. (Grades Choose an answer and hit 'next'. consider a seismograph stationed 3, Pwaves have the greatest velocity and reach the, seismic station first. Pwaves have the greatest velocity and reach theseismic station first. 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Entering the three maximum amplitudes generates a nomogram, a graphical device that simplifies the process of estimating magnitude from distance (determined earlier in the tutorial from the S-P interval process) and amplitude. Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. 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. How far do S waves travel in 5 Therefore, the lag Some places are more prone to earthquakes than others. 0000106240 00000 n Cross), Give Me Liberty! 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. to the lag time measured at this location? How does the period of the P waves compare to the period of the surface waves? 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) . 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. 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. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. 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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. pen recorded the arrival of P, S, and surface 0000001736 00000 n directly above it on the surface of the earth is called the epicenter. If you can't find an answer to your question, please contact us. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. velocity, amplitude, and frequency of the A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. 0000002658 00000 n You will receive your score and answers at the end. 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. Contact the teacher to find out the length of the class period, as well as how many copies of handouts and sets of materials you need to bring. and S waves to travel any distance up to 4. One seismogram indicates the distance to the epicenter. How are S and P waves used to determine how far away epicenters are? Sixty-seven people lost their lives, and property damage was estimated at $6 billion. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream 17 Station St., Ste 3 Brookline, MA 02445. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! Seismograms BDF endstream endobj 74 0 obj <>stream First, determine the P-wave arrival, and read down to the bottom of the seismogram to note at what time (usually marked in seconds) that the P-wave arrived. triangulation: A method to determine exactly where an earthquake originates. Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . Figure 13.10). [*aiLG?+J\QI86~}ooRrr!pm}dk@dBbZPMZlC4C\9^ SM.R\!H+$|+DUzt^w{" %&{KXjT'9yzT^UFe:+f(`PU_9%EW@\)?i qp!\G Z endstream endobj 75 0 obj <>stream Mark the first arrival of the swave on each seismogram. Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D This is determined by the P-and S-wave arrival times. Explains how to find an earthquake epicenter using at least three seismograph stations. Seismic stations detect earthquakes by the tracings made on seismographs. 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. Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. 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! How does distance from the epicenter affect the magnitude (height) of the seismograph reading? Why might the triangulation method not always produce an exact point (other than your measurement errors)? Thanks for your feedback! activity illustrates how the epicenter of an earthquake is found. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). PS: We do not share personal information or emails with anyone. 0000001861 00000 n Describe what the "magnitude" of an earthquake is. Many updates and improvements! HlRnQ?R\>BjK' surface wave? Thanks for your feedback! When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . What is the time lag for the Seattle, Washington, seismic station? 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. P and Swaves are body waves and travelthrough the interior of the earth. 13 4 locating an earthquake epicenter geosciences libretexts . 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. Last updated November 26, 2013. 0000030240 00000 n Using this resource students find the arrival times of P-waves and S-waves using a seismogram. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory 0000031066 00000 n Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. 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. 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. Great exercise for Regents Earth Science. 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. What was the lag time (in minutes) at this location? It shows the time required for P 0000001675 00000 n (Grades 9 - 12). You will analyze the records and locate the earthquake using a method known Focal Depth. Section A - Operator Information 1. xb``d``Id`a`Ab@_ :iWGi>|q` For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. P wave. Earthquakes occur along faults, which are cracks in the Earths crust that build tension. The real-world earthquake data is viewable via a graphical interface using a scaling map. 0000006538 00000 n You can also download it, export it or print it out. Based on your answers to the previous question, what is the lag time for locations that are 0000001777 00000 n *The NGSS logo is a registered trademark of WestEd. The, amount of time that passes between the Pwave arrival and the Swave arrival is. If the lag time were measured at a location closer to the epicenter, how would it compare ' 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 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. 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." 0000005544 00000 n 0000007783 00000 n The calculated distance from each seismometer to the earthquake is shown as a circle. 0000001533 00000 n n{6c&6NK*U;=9i%nF Describe the process of triangulation to locate an epicenter. (Figure 3):. The spot where those three circles intersect is the epicenter (Figure 13.12). Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. 1) Identify the general term for waves released from an earthquake. 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. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. DocHub v5.1.1 Released! 11 minutes elapsed between the first P wave and the last measurable surface wave. X!.43p2t!}SLx-3z.KN4X+H\+vk? Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. The seismometers are shown as green dots. 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. Please answer the following questions using the earthquake video shake, shake, shake. Legal. The process is called triangulation. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. time for any point that is 3,000 miles 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. If your seismograph station is This investigation is considered generally safe to do with students. 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. Learn more How Can I Locate the Earthquake Epicenter? 0000010002 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave . 01. $8.25. 0000001562 00000 n Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. Step 1: ans- d) 65 seconds Ste . The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. S-P interval: The time interval between the arrivals of P and S waves. Thus technology use varies from region to region and over time. Ask students what fault they think caused this earthquake. 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! Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. 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 . If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. This section explains what earthquakes and faults are and what causes earthquakes. Dochub is the best editor for changing your documents online. Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. Three seismographs are needed. Then do the same for the S-wave. 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 The vertical lines, spaced one (from left to right). within type by subtype, then by grade, etc. 0000115324 00000 n 1. %PDF-1.4 % Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. 0000002094 00000 n An earthquake is the violent movement of tectonic plates in the Earth's crust. 500p;333aXb3 \a.1. They make a model of a seismographa measuring device that records an earthquake on a seismogram. locate and label the epicenter of the earthquake on this map. Notify the classroom teacher of technology needs (overhead projector). 3000 miles. epicenter, the longer the lag time measured 0000098546 00000 n Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. 0000000856 00000 n Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. 0000009174 00000 n miles from the epicenter of an As the drum rotated, the S waves. As you may know, people have look numerous times for . Click for facts and worksheets in PDF! As discussed earlier in this lesson, this method of determining the epicenter of an . 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. (Listen to student ideas.) earthquake. Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) If a quake is near the seismograph, the S-waves arrive shortly after the P-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 Objective Use data from seismograms to locate the epicenters of earthquakes. Students also investigate which structural designs are most likely to survive an earthquake. View Notes - Locating_an_epicenter_activity from SCIENCE Earth Scie at Toms River High North. Use the graph to answer the questions that follow. PDF. For this activity, select the "Chile" box. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. d>(ZvO= Direct students to finish the activity by completing the. 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Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. 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 Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. 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