activity 4 locating an earthquake epicenter answer key

As discussed earlier in this lesson, this method of determining the epicenter of an . 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"? Virtual Earthquake (tutorial/simulation) 1996. Shear wave from earthquake, moving slower than primary waves, through solid material only. Earthquakes & Volcanoes Test Review Answers. What types of engineers might use this data the most? 2. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream 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. Millions of people witnessed the motion of the earthquake on television. PDF EARTHQUAKES: Epicenter Determination, Seismic Waves, and Hazards - WOU ' 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 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). hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! 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. 12 Earthquake Location Lab Answer Key Full PDF - www.yvc.moeys.gov approximate period of the surface waves in seconds? 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. 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. Lab Activity Locating Epicenters Flashcards | Quizlet 0000000956 00000 n 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. PDF Finding Epicenters Lab Answer Key Lab Pdf 0000001978 00000 n 0000006538 00000 n Upload a document. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. 0000106240 00000 n Epicenter is the location on the surface of the Earth directly above where the earthquake starts. (Figure 3):. 1,000 miles from the epicenter of an earthquake? Figure 2 is a seismic wave travel-time Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. Scientists use triangulation to find the epicenter of an earthquake. There are two sets of data and maps to do this activity/ lab for than once. 0000002507 00000 n HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N Z./$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 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), 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. Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. Ask students what fault they think caused this earthquake. In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; minutes and P waves 8 minutes to One seismogram indicates the distance to the epicenter. activity illustrates how the epicenter of an earthquake is found. The farther away the epicenter is, the greater the difference . Locating an Epicenter Activity - Arkansas Geological Survey long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? You will analyze the records and locate the earthquake using a method known Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Copyright 2023. 0000002544 00000 n Lab 8 - earthquake lab - Lab: Locating the Epicenters of Earthquakes travel 3,000 miles. 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 . Why might the triangulation method not always produce an exact point (other than your measurement errors)? It shows the time required for P Use this information to complete the following. Please answer the following questions using the earthquake video shake, shake, shake. Doing this generates an S-P interval graph (time vs. distance, called the travel-time curve graph) from which they determine and select three epicentral distances. 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. P and Swaves are body waves and travel, through the interior of the earth. Subject Areas: This is determined by the P-and S-wave arrival times. The answer is the San Andreas Fault. 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 What data is used to determine magnitude? triangulation: A method to determine exactly where an earthquake originates. Richter scale Method of earthquake measurement based on the amplitude of seismic . We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. How does the lag time change as you get farther and 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. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. earthquake - shaking and vibration of Earth's surface. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. epicenter, the longer the lag time measured 0000001746 00000 n 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. different types of seismic waves. consider a seismograph stationed 3, travel time for P waves. 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. Three seismographs are needed. Use the graph to answer the questions that follow. How many minutes elapsed between the arrival of the first P wave and the last measurable 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. 0000030504 00000 n The point beneath Earth's surface where rock breaks under stress and causes an earthquake. and S waves to travel any distance up to PDF Page - 1 Lab 08 - Seismology - Locating the Epicenter of an Earthquake 17 Station St., Ste 3 Brookline, MA 02445. Was there an initial quake followed by smaller quakes? 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! The travel-time graph Earthquakes occur along faults, which are cracks in the Earths crust that build tension. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. Focus. P and S arrivals, you can now locate an earthquake your answers below. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. What data is used to determine magnitude? Must engineers be content with mitigating disasters, instead of preventing them? Locating Epicenter Lab Worksheet (1).docx, Updating Patient Registration B at 08_10_2022 03_03 PM.pdf, You need to deploy an Azure environment that meets the company migration plan, Step 1 of 2 Program 1 A Simple Python Program Welcome with Two Messages Running, More women in academia report polarization assimilation in male skewed and male, A TACACS B RADIUS C Kerberos D SAML Correct Answer D QUESTION 321 A network, PTSD in Children and Adolescents - Copy - Copy - Copy - Copy.docx, Effects of Excitation and Prime Mover Control The excitation control helps to, D1 Fundamental security design principles.docx, Question 5 Correct Mark 100 out of 100 Remove flag Question 6 Correct Mark 100, Thomas Concurrence broadly attacked current NDD Federal gov should be allowed to, 769 Water at 15C is to be heated to 65C by passing it over a bundle of 4 m. Course Hero is not sponsored or endorsed by any college or university. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. Section 8.1 What Is an Earthquake? See Answer. 0000003991 00000 n Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. Locating an Earthquake's Epicenter - American Geosciences Institute U.S. Geological Survey, U.S. Department of the Interior. At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. It is slower than the same earthquake's P wave and cannot travel through liquids. Step 1: ans- d) 65 seconds Ste . Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. We have answers to the most popular questions from our customers. 500p;333aXb3 \a.1. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. 5. focus - the point within Earth where an earthquake originates. If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. Add to FlexBook Textbook. Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . 13 4 locating an earthquake epicenter geosciences libretexts . 0000006984 00000 n Book: Laboratory Manual for Introductory Geology (Deline, Harris & Tefend), { "13.01:_Introduction" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.02:_The_Epicenter,_Focus,_and_Waves" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.03:_Seismology" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.04:_Locating_an_Earthquake_Epicenter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.05:_Lab_Exercise_(Part_A)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.06:_Hazards_from_Earthquakes" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.07:_Lab_Exercise_(Part_B)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.08:_Induced_Seismicity" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.09:_Lab_Exercise_(Part_C)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13.10:_Student_Responses" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { "00:_Front_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "01:_Introduction_to_Physical_Geology" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "02:_Earth\'s_Interior" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "03:_Topographic_Maps" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "04:_Plate_Tectonics" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "05:_Water" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "06:_Climate_Change" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "07:_Matter_and_Minerals" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "08:_Igneous_Rocks" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "09:_Volcanoes" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "10:_Sedimentary_Rocks" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "11:_Metamorphic_Rocks" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "12:_Crustal_Deformation" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13:_Earthquakes" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14:_Physiographic_Provinces" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "zz:_Back_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, [ "article:topic", "showtoc:no", "license:ccbysa", "authorname:delineharristefend", "program:galileo" ], https://geo.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fgeo.libretexts.org%2FLearning_Objects%2FLaboratory%2FBook%253A_Laboratory_Manual_For_Introductory_Geology_(Deline_Harris_and_Tefend)%2F13%253A_Earthquakes%2F13.04%253A_Locating_an_Earthquake_Epicenter, $ \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}$ $ \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} $$\newcommand{\id}{\mathrm{id}}$ $ \newcommand{\Span}{\mathrm{span}}$ $ \newcommand{\kernel}{\mathrm{null}\,}$ $ \newcommand{\range}{\mathrm{range}\,}$ $ \newcommand{\RealPart}{\mathrm{Re}}$ $ \newcommand{\ImaginaryPart}{\mathrm{Im}}$ $ \newcommand{\Argument}{\mathrm{Arg}}$ $ \newcommand{\norm}[1]{\| #1 \|}$ $ \newcommand{\inner}[2]{\langle #1, #2 \rangle}$ $ \newcommand{\Span}{\mathrm{span}}$ $\newcommand{\id}{\mathrm{id}}$ $ \newcommand{\Span}{\mathrm{span}}$ $ \newcommand{\kernel}{\mathrm{null}\,}$ $ \newcommand{\range}{\mathrm{range}\,}$ $ \newcommand{\RealPart}{\mathrm{Re}}$ $ \newcommand{\ImaginaryPart}{\mathrm{Im}}$ $ \newcommand{\Argument}{\mathrm{Arg}}$ $ \newcommand{\norm}[1]{\| #1 \|}$ $ \newcommand{\inner}[2]{\langle #1, #2 \rangle}$ $ \newcommand{\Span}{\mathrm{span}}$$\newcommand{\AA}{\unicode[.8,0]{x212B}}$, status page at https://status.libretexts.org. Locating Earthquake Epicenters ( Read ) | Earth Science from the epicenter will be 14 8. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q (Grades 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. %PDF-1.4 % to the lag time measured at this location? A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. What is an earthquake? If you can't find an answer to your question, please contact us. The time Figure 8. Thanks for your feedback! Make arrangements so that each student group has a computer with Internet access. Students learn how engineers build shake tables that simulate the ground motions of the Earth caused by seismic waves in order to test the seismic performance of buildings. Every earthquake is recorded on numerous seismographs located in different directions. I also will take them through the general process of how find the difference in arrival times of p- and s-waves can be used to find a distance to an earthquake and how using data from 3 seismograph stations is used to locate the epicenter. Dochub is the best editor for changing your documents online. 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. As the drum rotated, the Click for facts and worksheets in PDF! Point on Earth's surface directly above an earthquake's focus. An earthquake is the violent movement of tectonic plates in the Earth's crust. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. Based on your answers to the previous question, what is the lag time for locations that are Reading Strategy. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. 0000078100 00000 n Moment magnitude scale. Cross), Give Me Liberty! 0000098546 00000 n 0000005544 00000 n Nov 2, 2020 Triangulation is used to determine the location of an earthquake. The hypocenter is the point within the earth where an earthquake rupture starts. The period of P waves is shorter, than the period of surface waves. 6.17: Locating Earthquake Epicenters - K12 LibreTexts