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Send activity 4 locating an earthquake epicenter worksheet answers via email, link, or fax. 0000002009 00000 n Download. An earthquake is the violent movement of tectonic plates in the Earth's crust. They use three seismographs in a process called triangulation to determine earthquake epicenters. Finding the Epicenter Determine the epicenter distance from three different seismographs. Type text, add images, blackout confidential details, add comments, highlights and more. 0000001533 00000 n 0000002094 00000 n (Source: USGS, Wikipedia). Material is sheared side to side, perpendicular to the direction of wave propagation. Dochub is the best editor for changing your documents online. It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? Thanks for your feedback! epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. They make a model of a seismographa measuring device that records an earthquake on a seismogram. 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. (, Have any of you ever experienced an earthquake or know anyone who has? H\0y 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. 0000008088 00000 n Must engineers be content with mitigating disasters, instead of preventing them? trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream minutes? Mark the first arrival of the swave on each seismogram. Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory hbb2b`b``a I @ endstream endobj 62 0 obj <>/Metadata 55 0 R/Pages 51 0 R/StructTreeRoot 57 0 R/Type/Catalog/ViewerPreferences<>>> endobj 63 0 obj <>/Font<>>>/Fields[]>> endobj 64 0 obj <>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 65 0 obj <> endobj 66 0 obj <> endobj 67 0 obj <> endobj 68 0 obj <>stream Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. (from left to right). The spot where those three circles intersect is the epicenter (Figure 13.12). surface wave? During an earthquake, seismic waves are sent all over the globe. 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. 0000031066 00000 n 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. How does the lag time change as you get farther and Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C Do you agree with this alignment? Last updated November 26, 2013. !5(~q* PS: We do not share personal information or emails with anyone. 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. /g$=#!$EbBbhD!,x so^6Uc})\uJs=fyY}j'|YjTm8B_[}*Ovm\[J'.mu?lQg,wzJM^X&P w>-T%*h%J4 yB@VPmP]@D------------,2dfY$"A!ANAASi)4$dniiiinH% Gxt5DJ) )9RRr$II'y ??O's^3@[{*{VT?nsNS!ilq]mFO?? The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. Notify the classroom teacher of technology needs (overhead projector). How far do S waves travel in 5 0000030240 00000 n The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. 17 Station St., Ste 3 Brookline, MA 02445. %PDF-1.5 % When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. 0000004769 00000 n 1. 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 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. 0000001396 00000 n Use this information to complete the following. Tips: Make sure students are reading the S waves and not the P waves. "`B(R6sj [CX7p+s =#;~ `'kA 0000002383 00000 n 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. To locate the epicenter of the earthquake, seismologists use the . Place a ruler (or straight edge) on the chart between the points you marked for the distance to the epicenter and the amplitude. Make an overhead copy of each of the handouts. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. The period of a wave is the time between two adjacent wave peaks. As the drum rotated, the Use this information to complete the following. Success is figuring out that the estimated magnitude is 5.9. atrial depolarization. As you may know, people have look numerous times for . Sixty-seven people lost their lives, and property damage was estimated at $6 billion. 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. Three seismographs are needed. 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. 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. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. Make arrangements so that each student group has a computer with Internet access. There are two sets of data and maps to do this activity/ lab for than once. Show students some of the numerous online animations comparing the movements of P and S waves. The seismometers are shown as green dots. Subject Areas: How is the magnitude of an earthquake determined? A circle with a radius of the distance to the quake can be drawn. We have answers to the most popular questions from our customers. Explains how to find an earthquake epicenter using at least three seismograph stations. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. 0000001978 00000 n Upload a document. by. 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. 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. This worksheet focuses on using the p and s graph to find different variables. If you can't find an answer to your question, please contact us. hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? 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Figure 1 is a simplified example of a Earthquakes Living Lab: Finding Epicenters and Measuring Magnitudes ActivityWorksheet Example Answers 4 now big earthquakes are measured using the moment magnitude scale; both scales essentially rank the power (energy release) of the earthquake. Mr Gneiss. The travel-time graph How might they use this information? Do you think we will someday be able to prevent earthquakes? Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. 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 pen recorded the arrival of P, S, and surface Zip. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. Wikipedia, The Free Encyclopedia. (, 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. 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. 0000007097 00000 n The farther a station is from the Swaves arrive at the seismic station after the Pwaves. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). (Source: USGS). 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. What is an earthquake? In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. 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. These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). travel 3,000 miles. 0000030504 00000 n and S waves to travel any distance up to Earthquakes & Volcanoes Test Review Answers. 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. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. How does distance from the epicenter affect the S-P time interval? 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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. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. Learn more How Can I Locate the Earthquake Epicenter? If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". 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? inch = 500 km. American Geosciences Institute. Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. This section explains what earthquakes and faults are and what causes earthquakes. 0000003855 00000 n DocHub v5.1.1 Released! P and Swaves are body waves and travelthrough the interior of the earth. Record your answer from Lab Exercise #2, Step 1. miles from the epicenter of an 1. *The NGSS logo is a registered trademark of WestEd. n{6c&6NK*U;=9i%nF https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 0000005149 00000 n The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. U.S. Geological Survey, U.S. Department of the Interior. 0000001861 00000 n 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. Great exercise for Regents Earth Science. 61 33 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.