Copyright 2023. Figure 1 is a simplified example of a At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. 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. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. What was the lag time (in minutes) at this location? Alignment agreement:
Run through the investigation yourself and record the data, just to see how long it takes. 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 . 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . A minimum of three seismic stations is necessary to locate an epicenter. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) %PDF-1.4
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Cross), Give Me Liberty! These natural disasters may be mitigated, however, by insightful and creative engineering. We have answers to the most popular questions from our customers. The seismometers are shown as green dots. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. 0000004769 00000 n
Mark the first arrival of the swave on each seismogram. Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. Do you agree with this alignment? This is determined by the P-and S-wave arrival times. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. Step 1: ans- d) 65 seconds Ste . 5. focus - the point within Earth where an earthquake originates. 17 Station St., Ste 3 Brookline, MA 02445. different types of seismic waves. 1. 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. '
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What is the Describe what the "magnitude" of an earthquake is. minutes and P waves 8 minutes to 0000002658 00000 n
(, 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. Last modified July 18, 2012. hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0
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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. As discussed earlier in this lesson, this method of determining the epicenter of an . Some places are more prone to earthquakes than others. 0000031066 00000 n
The travel-time graph epicenter, the longer the lag time measured 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
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hbbd``b`$C`q9 X_$_g`bdxc`X Great exercise for Regents Earth Science. 0000001862 00000 n
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. DocHub v5.1.1 Released! (, Have any of you ever experienced an earthquake or know anyone who has? Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! PDF. trailer
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If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Edit your locating an earthquake epicenter worksheet answers online. 0000002250 00000 n
inch = 500 km. 0000006011 00000 n
If a quake is far from the seismograph, the P-waves arrive long before the S-waves. 0000000856 00000 n
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Learn more How Can I Locate the Earthquake Epicenter? Thanks for your feedback! within type by subtype, then by grade, etc. 0000002507 00000 n
Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. 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. How does the period of the P waves compare to the period of the surface waves? Richter scale Method of earthquake measurement based on the amplitude of seismic . Ask students what fault they think caused this earthquake. Epicenter. Add to FlexBook Textbook. Also called seismometer. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. The farther a station is from the Graphs, charts, and images can be used to identify patterns in data. (i. The process is called triangulation. 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 . The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. Sixty-seven people lost their lives, and property damage was estimated at $6 billion. How are S and P waves used to determine how far away epicenters are? The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. 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. 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. Click for facts and worksheets in PDF! 0000001396 00000 n
3. 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. 13. The vertical lines, spaced one Note the differences in 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. 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. 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. 0000106240 00000 n
Tips: Make sure students are reading the S waves and not the P waves. 0000001675 00000 n
Earthquakes and Volcanoes. 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? The wavelength and frequency of a wave are related to one another by the speed of travel of the wave, which depends on the type of wave and the medium through which it is passing. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D
Jj=.9,z!#@n5YCu>R88tfFRX=iRK Thanks for your feedback! Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). Use this information to complete the following. Answer Key: Lab 5 Earthquakes - Find People, Locating Earthquake Epicenters | CK-12 Foundation, Earthquake Station - Regents Earth Science, Locating Earthquakes Teaching Resources - TPT, Locating An Epicenter Teaching Resources - TPT, How To Find The Epicenter Of An Earthquake - YouTube, Locating The Epicenter Of An Earthquake Worksheet, Locating An Earthquake Epicenter Worksheet Answers, glencoe responsible driving chapter 2 answers, pnp neuro psychiatric exam sample questions, quais tipos de drogas sao detectadas no exame toxicologico, centro de apoio diagnostico resultado de exames, locating earthquake epicenter worksheet answer key, exame pcr covid para viagem internacional, quantos dias pra sair o resultado do exame de covid, du ma political science entrance exam syllabus 2023, earth and life science grade 11 module 4 genetic engineering answer key, go math grade 5 chapter 11 lesson 11.9 answer key, civil service examination in the philippines. 12), computer or other device with Internet access, journal or writing paper for each student. Locating an Epicenter Activity - Arkansas Geological Survey distance from transducer to the focal point. 0000001861 00000 n
Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif m>r/Q[6 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. 0000001736 00000 n
To complete the activity, some prior . Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. (Grades 9 - 12). (Listen to student ideas.) The magnitude determination is based on seismic data. 0000030240 00000 n
Success is figuring out that the estimated magnitude is 5.9. directly above it on the surface of the earth is called the epicenter. 0000001746 00000 n
HS-PS4-1. The real-world earthquake data is viewable via a graphical interface using a scaling map. 0000000016 00000 n
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. You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. 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. Please answer the following questions using the earthquake video shake, shake, shake. 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. hb```b````e``n`d@ A
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vILZ*|%6mD! When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. When the tension becomes too great, the fault slips, causing an earthquake. Last updated November 26, 2013. However, please review it for the specific setting, materials, students, and conventional safety precautions. Notify the classroom teacher of technology needs (overhead projector). These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). 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. locate and label the epicenter of the earthquake on this map. 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. 0000001978 00000 n
travel 3,000 miles. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. Dochub is the best editor for changing your documents online. waves from a distant earthquake. 3000 miles. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. Based on your answers to the previous question, what is the lag time for locations that are The epicenter of an earthquake can be found using the difference between the arrival of the Primary and Secondary waves. It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. Expert Answer. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. How many minutes elapsed between the arrival of the first P wave and the last measurable 0000002094 00000 n
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Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. to the lag time measured at this location? During an earthquake, seismic waves are sent all over the globe. Book: Laboratory Manual for Introductory Geology (Deline, Harris & Tefend), { "13.01:_Introduction" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
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Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. longer or shorter). (Grades
surface wave? https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 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. 0000005081 00000 n
Mr Gneiss. Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. Legal. Short for "primary wave" or "pressure wave." If your seismograph station is H\0y 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. 0 500 1000 1500 2000 2500 3000 Using this resource students find the arrival times of P-waves and S-waves using a seismogram. 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! HtA1D41`s(GME$Ke*YdEOYf2-:r. [N'. HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N
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