activity 4 locating an earthquake epicenter answer key

distance = travel time for S waves What data is used to determine magnitude? minutes = 6 minutes. Use Figure 5 and the travel-time graph in Figure 4 to determine . 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. 0000004224 00000 n Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. pen recorded the arrival of P, S, and surface Using this resource students find the arrival times of P-waves and S-waves using a seismogram. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C velocity, amplitude, and frequency of the Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. (from left to right). ?t?s=Yt '_( endstream endobj 76 0 obj <>stream The period of P waves is shorter, than the period of surface waves. There are two sets of data and maps to do this activity/ lab for than once. Zip. The seismometers are shown as green dots. 0000006011 00000 n Thanks for your feedback! Dochub is the best editor for changing your documents online. Practicing this technique, the students work several problems on a map of the US. If your seismograph station is Please answer the following questions using the earthquake video shake, shake, shake. Richter scale Method of earthquake measurement based on the amplitude of seismic . Shear wave from earthquake, moving slower than primary waves, through solid material only. earthquake - shaking and vibration of Earth's surface. Legal. Cross), Give Me Liberty! Students also investigate which structural designs are most likely to survive an earthquake. [N'. Practice with Triangulation: Locating an earthquake epicenter. 83 0 obj <> endobj In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). at that station. minutes and P waves 8 minutes to You will receive your score and answers at the end. 0000003855 00000 n *The NGSS logo is a registered trademark of WestEd. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. (Figure 3):. This worksheet focuses on using the p and s graph to find different variables. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. 0000005544 00000 n 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. Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) waves from a distant earthquake. 13 4 locating an earthquake epicenter geosciences libretexts . Tips: Make sure students are reading the S waves and not the P waves. Next, have student groups answer the eight questions in the. What data is used to determine magnitude? Three seismographs are needed. How does distance from the epicenter affect the S-P time interval? 0000001408 00000 n Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). Y$Kr;V6[;Dq vg~cx:A[^jCssupwD endstream endobj 80 0 obj <> endobj 81 0 obj <>stream $8.25. Every year, earthquakes cause death and destruction worldwide. 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. 0000003254 00000 n (Source: USGS). Was there an initial quake followed by smaller quakes? earthquake. Geologists use seismic waves to locate an earthquake's epicenter. Mark the first arrival of the swave on each seismogram. The farther away the epicenter is, the greater the difference . How far do S waves travel in 5 The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. Therefore, the lag seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. 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. Point on Earth's surface directly above an earthquake's focus. 12), Evaluate ways that technology can impact individuals, society, and the environment. To complete the activity, some prior . Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. 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. The simulation renders three circles on a map and directs students to find the epicenter. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. How does the Mad Scientist. 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. 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. P and S arrivals, you can now locate an earthquake your answers below. Specifically, seismographs make recordings (seismograms) of the seismic waves generated from earthquakes, providing engineers and other researchers with data that they use to make predictions about future earthquakes. P wave: The first seismic wave of an earthquake. (Grades 6 - 8). Do you agree with this alignment? 0000006538 00000 n P wave. 61 0 obj <> endobj xref Reading Strategy. Notify the classroom teacher of technology needs (overhead projector). Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. 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. One seismogram indicates the distance to the epicenter. At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. 0000004457 00000 n time for any point that is 3,000 miles 1. Last updated November 26, 2013. miles from the epicenter of an HlRnQ?R\>BjK' seismogram. 0000115324 00000 n 0000005149 00000 n S-P interval: The time interval between the arrivals of P and S waves. 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 to the lag time measured at this location? Use this information to complete the following. travel time for P waves. Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. 0000078100 00000 n 0000002094 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. from the epicenter will be 14 8. Key Facts & Information. Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. Please answer the following questions using the earthquake video - shake, shake, shake. 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. It is slower than the same earthquake's P wave and cannot travel through liquids. It shows the time required for P inch = 500 km. question 1 of 3. Short for "primary wave" or "pressure wave." Graphs, charts, and images can be used to identify patterns in data. 12), Analyze and interpret data about natural hazards using direct and indirect evidence We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 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. 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! Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! Material is sheared side to side, perpendicular to the direction of wave propagation. Make changes to the sample. 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. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. It takes S waves 14. What is an earthquake? This is determined by the P-and S-wave arrival times. 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. %PDF-1.3 % 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. minutes? www.teachengineering.org/activities/view/csm_findingepicenters_activity1, Search curriculum by Common Core standards, http://www.teachengineering.org/livinglabs/earthquakes/, Click to view other curriculum aligned to this Performance Expectation, Finding Epicenters and Measuring Magnitudes Worksheet, Finding Epicenters and Measuring Magnitudes (docx), Finding Epicenters and Measuring Magnitudes (pdf), Finding Epicenters and Measuring Magnitudes Example Answers (docx), Finding Epicenters and Measuring Magnitudes Example Answers (pdf), Earthquakes Living Lab: FAQs about P Waves, S Waves and More, Seismic Waves: How Earthquakes Move Through the Earth, Earthquakes Living Lab: Designing for Disaster, http://www.teachengineering.org/livinglabs/index.php, https://www.newpathonline.com/api_player/enus_54_6304/LXX/index.html. Finding the Epicenter. 500p;333aXb3 \a.1. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. 0000001862 00000 n Type text, add images, blackout confidential details, add comments, highlights and more. The epicenter is the point directly above it at the surface of the Earth. A minimum of three seismic stations is necessary to locate an epicenter. Seismic Waves. 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! When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. The period of a wave is the time between two adjacent wave peaks. Pwaves have the greatest velocity and reach the, seismic station first. Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). Earthquakes and Volcanoes. 0000001777 00000 n In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 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. (Source: USGS, Wikipedia). Choose an answer and hit 'next'. Epicenter. (, Have any of you ever experienced an earthquake or know anyone who has? 0000001746 00000 n !5(~q* It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. Swaves arrive at the seismic station after the Pwaves. In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; HTn0MmcHCB Thanks for your feedback! epicenter, the longer the lag time measured a project of D2L (www.achievementstandards.org). A circle with a radius of the distance to the quake can be drawn. Thanks for your feedback! Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. U.S. Geological Survey, U.S. Department of the Interior. hbbd``b`$C`q9 X_$_g`bdxc`X %%EOF DocHub v5.1.1 Released! 0000010002 00000 n (Grades Figure 13.10). The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. graph. The vertical lines, spaced one The point of origin of an earthquake is called its focus and the point on the Earth's surface directly above the focus is the epicenter. 0000103591 00000 n [*aiLG?+J\QI86~}ooRrr!pm}dk@dBbZPMZlC4C\9^ SM.R\!H+$|+DUzt^w{" %&{KXjT'9yzT^UFe:+f(`PU_9%EW@\)?i qp!\G Z endstream endobj 75 0 obj <>stream Seismograms 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. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. and S waves depends on the distance from the epicenter of the answer the following question. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. Record your answer from Lab Exercise #2, Step 1. 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. H\0y Today, most seismologists no longer follow Richter's original methodology because it does not give reliable results when applied to stronger earthquakes and it was not designed to use data from earthquakes recorded at epicentral distances greater than ~600 km. Short for "secondary wave" or "shear wave." Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. 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. Apr 8, 2020 One seismogram indicates the distance to the epicenter. I contacted the persons listed below to find out the location of the following people entitled to notice Name of Person Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. (Grades Assess their understanding based on the thoroughness of their answers. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q 0000030968 00000 n 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. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. 0000001396 00000 n The calculated distance from each seismometer to the earthquake is shown as a circle. PDF. 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Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes.

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