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. 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. 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. 0000001777 00000 n 2. H\0y The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . Record your answer from Lab Exercise #2, Step 1. 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? S waves. 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. How does distance from the epicenter affect the S-P time interval? To locate the epicenter of the earthquake, seismologists use the . and S waves to travel any distance up to You will receive your score and answers at the end. Have students turn in their answers for the Explain portion of the worksheet. %%EOF Note the differences in miles from the epicenter of an Wikipedia, The Free Encyclopedia. The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. Student exploration Graphing Skills SE Key Gizmos Explore Learning. 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. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. activity illustrates how the epicenter of an earthquake is found. [*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 Cross), Give Me Liberty! "`B(R6sj [CX7p+s =#;~ `'kA In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. 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 This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. PS: We do not share personal information or emails with anyone. Locating An Earthquake Epicenter Worksheet Answers Describe what the "magnitude" of an earthquake is. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK The simulation renders three circles on a map and directs students to find the epicenter. 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. 9 - (, Have any of you ever experienced an earthquake or know anyone who has? At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. Make changes to the sample. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. Hands-on Activity Earthquakes Living Lab: Finding Epicenters If your seismograph station is Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . Was there an initial quake followed by smaller quakes? THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. !5(~q* It shows the time required for P The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. It is slower than the same earthquake's P wave and cannot travel through liquids. Richter scale Method of earthquake measurement based on the amplitude of seismic . Details. surface wave? Make an overhead copy of each of the handouts. 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. 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. 4. 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 It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. Therefore, the lag The real-world earthquake data is viewable via a graphical interface using a scaling map. The point beneath Earth's surface where rock breaks under stress and causes an earthquake. 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. The longer the time is between the P-and S-wave . Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. How are S and P waves used to determine how far away epicenters are? What are those limits? 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Course Hero is not sponsored or endorsed by any college or university. 0000003254 00000 n Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. Figure 2. Legal. Click on New Document and select the file importing option: upload Locating the epicenter of an earthquake worksheet answer key from your device, the cloud, or a protected link. Locating an Earthquake's Epicenter - American Geosciences Institute Practicing this technique, the students work several problems on a map of the US. 0000003855 00000 n Locating an Epicenter Activity - Arkansas Geological Survey endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. 1. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 Locating Earthquake Epicenter Lab Answer Key buysms de. Alignment agreement: Based on your answers to the previous question, what is the lag time for locations that are As discussed earlier in this lesson, this method of determining the epicenter of an . Why might the triangulation method not always produce an exact point (other than your measurement errors)? In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. This is determined by the P-and S-wave arrival times. 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. 9 - 0000004224 00000 n We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Quick Tips. 0000001143 00000 n This worksheet focuses on using the p and s graph to find different variables. 0000098546 00000 n Seismograms Focus. 0000002009 00000 n After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, Seismic stations detect earthquakes by the tracings made on seismographs. Thanks for your feedback! We have answers to the most popular questions from our customers. (Grades 6 - 8). Earthquake Worksheet Answers 0000001862 00000 n 0000002840 00000 n Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. *The NGSS logo is a registered trademark of WestEd. Locating An Earthquake Epicenter Lab Answer Key Do you agree with this alignment? HS-PS4-1. 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. P and Swaves are body waves and travelthrough the interior of the earth. 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? Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . 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. between arrival of P and S waves is called Mr Gneiss. %PDF-1.4 % While earthquake locations are normally done with a computer that can quickly determine the paths of seismic waves through the Earth to many seismic stations, 15 Introduction to Geology Chapter Worksheet . Add to FlexBook Textbook. Use Figure 5 and the travel-time graph in Figure 4 to determine . Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. Last modified July 18, 2012. The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. How do we determine the epicenter of an earthquake? 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. minute apart, represent the passage of time This section explains what earthquakes and faults are and what causes earthquakes. 0000000016 00000 n (Source: USGS). 0000002250 00000 n If a quake is far from the seismograph, the P-waves arrive long before the S-waves. (Source: USGS, Wikipedia). All 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), Considered best for measuring small earthquakes (3.5 M or less). !D,X2:azTG)kPT~Mj 4>d w@O'. The magnitude determination is based on seismic data. Learn more How Can I Locate the Earthquake Epicenter? 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. A little under 30 seconds, maybe around 26 seconds. A circle with a radius of the distance to the quake can be drawn. Earthquakes occur along faults, which are cracks in the Earths crust that build tension. Section A - Operator Information 1. 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. 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 Finding the Epicenter Determine the epicenter distance from three different seismographs. 0000010002 00000 n The answer is the San Andreas Fault. You will analyze the records and locate the earthquake using a method known Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. HlRnQ?R\>BjK' The process is called triangulation. Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, Review their answers to assess their base knowledge of the subject matter. PDF Finding Epicenters Lab Answer Key Lab Pdf Mark the first arrival of the swave on each seismogram. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. Epicenter Location on Earth's surface directly above the focus of the earthquake 5. What types of engineers might use this data the most? PDF Locating An Earthquake Epicenter Lab Answers - Full PDF 0000001746 00000 n Next, have student groups answer the eight questions in the. 0000001396 00000 n Activity 4: Locating an Earthquake Epicenter Examining Seismograms The three basic types of seismic wave generated by an earthquake at its focus are Pwaves, Swaves, and Surface waves. Find 23 millimeters on the right side of the chart and mark that point. What data is used to determine magnitude? 0000009174 00000 n Tips: Make sure students are reading the S waves and not the P waves. Figure 8. Step 1: ans- d) 65 seconds Ste . 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. 0000106240 00000 n Reading Strategy. Then do the same for the S-wave. 0000001736 00000 n 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." View Notes - Locating_an_epicenter_activity from SCIENCE Earth Scie at Toms River High North. (Source: USGS, Wikipedia). Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. 0000008845 00000 n Millions of people witnessed the motion of the earthquake on television. Share with Classes. Use the process of triangulation to locate an earthquake's epicenter. 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 Locating Earthquake Epicenters ( Read ) | Earth Science Describe the logarithmic nature of the earthquake magnitude scale. 0000005149 00000 n Locating_an_epicenter_activity - Activity4 - Course Hero inch = 500 km. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). 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. within type by subtype, then by grade, etc. PDF Finding Epicenters and Measuring Magnitudes Worksheet 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . 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. distance = travel time for S waves Sixty-seven people lost their lives, and property damage was estimated at $6 billion. One seismogram indicates the distance to the epicenter. How many minutes elapsed between the arrival of the first P wave and the last measurable earthquakes. Choose an answer and hit 'next'. Click for facts and worksheets in PDF! velocity, amplitude, and frequency of the Triangulation to Locate an Earthquake | U.S. Geological Survey [N'. $8.25. 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. You can also download it, export it or print it out. Do you agree with this alignment? Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. Upload a document. The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. Hand out the worksheets to the groups and direct them to read through the instructions. How is the magnitude of an earthquake determined? 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 Nov 2, 2020 Triangulation is used to determine the location of an 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). 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PDF Lecture 3 Activity: Locating an Earthquake Epicenter The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. 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 . epicenter, the longer the lag time measured DOC Home - Westerville City Schools Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. 0000004511 00000 n epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. There are two sets of data and maps to do this activity/ lab for than once. 0000006984 00000 n Seismic Waves. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows - Chegg Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. Focal Depth. PDF Locating an Epicenter Activity - Arkansas Geological Survey 0000001562 00000 n Figure 13.10). 0000001533 00000 n 6. (Grades The travel-time graph 0000001675 00000 n 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. Run through the investigation yourself and record the data, just to see how long it takes. Every earthquake is recorded on numerous seismographs located in different directions. 0000055643 00000 n 0000005081 00000 n Ask students what fault they think caused this earthquake. Three seismographs are needed. atrial depolarization. 1. Using online resources and simulations available through the Earthquakes Living Lab, students explore the consequences of subsurface ground type and building height on seismic d Seismographs are measuring devices designed by engineers and used by researchers to determine the locations and magnitudes of earthquakes. 12), Evaluate ways that technology can impact individuals, society, and the environment. Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. 1,000 miles from the epicenter of an earthquake? Must engineers be content with mitigating disasters, instead of preventing them? long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? 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. The earthquake occurred somewhere along that circle. What did it feel like? important in helping seismologists determine the epicenter of the earthquake. determine the epicenter using the S P (S minus P) method. 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). P and S arrivals, you can now locate an earthquake your answers below. technology, engineering or math (STEM) educational standards. (i. 61 33 How does the period of the P waves compare to the period of the surface waves? The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. 0000005544 00000 n minutes = 6 minutes. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. The distance is in kilometers. Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. 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. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. 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"? Describe the process of triangulation to locate an epicenter. 0000001408 00000 n distance from transducer to the focal point. U.S. Geological Survey, U.S. Department of the Interior. 500p;333aXb3 \a.1. : 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. The lag time for any The calculated distance from each seismometer to the earthquake is shown as a circle. from the epicenter will be 14 8. What is an earthquake? lag time. epicenter of an earthquake, how The, amount of time that passes between the Pwave arrival and the Swave arrival is. 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! n{6c&6NK*U;=9i%nF 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. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif 9 - For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. 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. PDF EARTHQUAKES: Epicenter Determination, Seismic Waves, and Hazards - WOU to the lag time measured at this location? 0000003966 00000 n Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. time for any point that is 3,000 miles Epicenter. 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) .