activity 4 locating an earthquake epicenter answer key

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. 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. The time Learn more How Can I Locate the Earthquake Epicenter? Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. In the U.S., earthquake measurements under the MMS (those of magnitude 3.5 or higher) are still commonly erroneously referred to by the general public and media as being on the Richter scale, due to more familiarity with the Richter scale. Ask students what fault they think caused this earthquake. 500p;333aXb3 \a.1. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. 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. 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 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). Do you agree with this alignment? Make arrangements so that each student group has a computer with Internet access. 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?" 4. Practice with Triangulation: Locating an earthquake epicenter. 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. 12), Analyze and interpret data about natural hazards using direct and indirect evidence All the arcs should intersect at a common point - the epicenter. 1,000 miles from the epicenter of an earthquake? 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. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. 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. 0000000856 00000 n atrial depolarization. View Notes - Locating_an_epicenter_activity from SCIENCE Earth Scie at Toms River High North. 0000000016 00000 n 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. 0000001893 00000 n Sixty-seven people lost their lives, and property damage was estimated at $6 billion. surface wave? 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```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) epicenter, the longer the lag time measured distance = travel time for S waves 0000002840 00000 n epicenter of an earthquake, how 0000001396 00000 n 5. focus - the point within Earth where an earthquake originates. 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. The longer the time is between the P-and S-wave . consider a seismograph stationed 3, Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. Key Facts & Information. Then do the same for the S-wave. Reading Strategy. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif Find 23 millimeters on the right side of the chart and mark that point. The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. 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. !5(~q* The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. P and S arrivals, you can now locate an earthquake your answers below. 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? What is an earthquake? The nations most famous fault is the San Andreas Fault, which runs along a north-south trend in southern California, and happens to run directly through Los Angeles. How does distance from the epicenter affect the magnitude (height) of the seismograph reading? The point beneath Earth's surface where rock breaks under stress and causes an earthquake. Finding the Epicenter Determine the epicenter distance from three different seismographs. 61 0 obj <> endobj xref Short for "primary wave" or "pressure wave." and S waves depends on the distance from the epicenter of the answer the following question. Add to Library. What is the Thanks for your feedback! 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. 11 minutes elapsed between the first P wave and the last measurable surface wave. What about P waves? (5 minutes) Discuss how gathering information on epicenters can be applied. (Source: USGS, Wikipedia). 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. 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. H\0y hbbd``b`$C`q9 X_$_g`bdxc`X 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. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. 0000053998 00000 n epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. Legal. 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. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. 0000001604 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. Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. Therefore, the lag to the lag time measured at this location? Was there an initial quake followed by smaller quakes? Tips: Make sure students are reading the S waves and not the P waves. 0000001978 00000 n seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. Identify P, S, and surface waves on seismograms, Measure amplitude and lag time on seismograms, Use triangulation to accurately locate the epicenter of an earthquake, Accurately report the latitude and longitude of the epicenter, Sea Floor Lab Help with Problem 2 - Tagged, Metamorphic Rocks Lab Instructions - Tagged, Lab exam 2 - Study guide for the second exam regarding all the labs and material covered, Redaccion de textos II Marco n 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. The travel-time graph When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. Notify the classroom teacher of technology needs (overhead projector). 5 4. 0000006538 00000 n The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. PS: We do not share personal information or emails with anyone. 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. 0000005081 00000 n minutes = 6 minutes. Note the differences in 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. 0000002009 00000 n directly above it on the surface of the earth is called the epicenter. 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." THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Last updated November 26, 2013. One seismogram indicates the distance to the epicenter. lag time. Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. 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. : 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. Direct students to finish the activity by completing the. trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream Dochub is the best editor for changing your documents online. How is the magnitude of an earthquake determined? d>(ZvO= S waves. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. 0000030504 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. As discussed earlier in this lesson, this method of determining the epicenter of an . In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. First locate and mark the three seismic stations on the world map provided below. (Grades Record your answer from Lab Exercise #2, Step 1. 9 - 0000009174 00000 n These natural disasters may be mitigated, however, by insightful and creative engineering. The hypocenter is the point within the earth where an earthquake rupture starts. You will analyze the records and locate the earthquake using a method known %%EOF To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. 3000 miles. Geologists use seismic waves to locate an earthquake's epicenter. 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. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. 0000003991 00000 n How might they use this information? Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. Why might the triangulation method not always produce an exact point (other than your measurement errors)? The period of P waves is shorter, than the period of surface waves. 0000006984 00000 n What are those limits? 0000003855 00000 n In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. 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(Grades For example, As the drum rotated, the How does the lag time change as you get farther and How far do S waves travel in 5 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 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. Figure 2. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream Explains how to find an earthquake epicenter using at least three seismograph stations. 0 500 1000 1500 2000 2500 3000 The calculated distance from each seismometer to the earthquake is shown as a circle. Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory The magnitude is the logarithm of the amplitude of the ground wave. farther from the epicenter of an earthquake? Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. 01. To do this, have the students use, Find the epicenter of the earthquake on the map (. Alignment agreement: 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. Download. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. Next, have student groups answer the eight questions in the. Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. Now on the main page of the Earthquakes Living Lab website (see Figure 2), note the featuring of four active seismic areas and the mapping of real-time and current data from earthquakes happening around the world. Place a ruler (or straight edge) on the chart between the points you marked for the distance to the epicenter and the amplitude. The seismometers are shown as green dots. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. Three seismographs are needed. Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. 1. Review their answers to assess their base knowledge of the subject matter. 0000000956 00000 n Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. 0000106240 00000 n Do you think we will someday be able to prevent earthquakes? 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! 1) Identify the general term for waves released from an earthquake. Many updates and improvements! 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. 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. 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 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.

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