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). 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. Details. Figure 8. Student exploration Graphing Skills SE Key Gizmos Explore Learning. 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. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. Finding the epicenter worksheet answer key. 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Shear wave from earthquake, moving slower than primary waves, through solid material only. Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. 12 Earthquake Location Lab Answer Key (PDF) - skislah.edu Web12-earthquake-location-lab-answer-key 1/1 Downloaded from skislah.edu.my on February 15, 2023 by guest 12 Earthquake Location Lab Answer Key Right here, we have countless ebook 12 Earthquake Location Lab Answer Key and collections to check out. 0000002250 00000 n The period of a wave is the time between two adjacent wave peaks. 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? 0000001893 00000 n Edit your locating an earthquake epicenter worksheet answers online. HTAn Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. Therefore, the lag endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream 0000030968 00000 n 0000004224 00000 n The lag time for any Notify the classroom teacher of technology needs (overhead projector). Question: ACTIVITY 2B Locating an Earthquake Figure 5 shows seismograms for the same earthquake recorded at three locations-New York; Nome, Alaska; and Mexico City. This is determined by the P-and S-wave arrival times. 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Key Facts & Information. Hand out the worksheets to the groups and direct them to read through the instructions. P and Swaves are body waves and travel, through the interior of the earth. U.S. Geological Survey, U.S. Department of the Interior. consider a seismograph stationed 3, 9 - travel time for P waves. (Grades Note the differences in A minimum of three seismic stations is necessary to locate an epicenter. 0000004769 00000 n 0000001978 00000 n Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. directly above it on the surface of the earth is called the epicenter. Every year, earthquakes cause death and destruction worldwide. 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. A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. 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. 0000002507 00000 n 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. (Grades 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. Last updated November 26, 2013. Earthquakes occur along faults, which are cracks in the Earths crust that build tension. PDF. 0000000856 00000 n S waves. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. It shows the time required for P After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. Section 8.1 What Is an Earthquake? hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) Subject Areas: Three seismographs are needed. 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. (Grades 9 - 12). Figure 13.10). 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 . 0000005149 00000 n 0000003855 00000 n earthquake. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc farther from the epicenter of an earthquake? The vertical lines, spaced one minutes and P waves 8 minutes to 0000055643 00000 n 0000103591 00000 n Direct students to finish the activity by completing the. What is the waves from a distant earthquake. 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! 5 4. lag time. Must engineers be content with mitigating disasters, instead of preventing them? 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 living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. inch = 500 km. Quick Tips. d>(ZvO= 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. 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Figure 1 is a simplified example of a 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. Draw your signature, type it, upload its image, or use your mobile device as a signature pad. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. We additionally manage to pay for . Make an overhead copy of each of the handouts. At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. 0 500 1000 1500 2000 2500 3000 distance = travel time for S waves 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. E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. HtA1D41`s(GME$Ke*YdEOYf2-:r. The earthquake occurred somewhere along that circle. Was there an initial quake followed by smaller quakes? Dochub is the best editor for changing your documents online. earthquakes. Seismograms Use Figure 5 and the travel-time graph in Figure 4 to determine . What is an earthquake? 9 - (, 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. A circle with a radius of the distance to the quake can be drawn. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C 4. 0000053998 00000 n During an earthquake, seismic waves are sent all over the globe. 107 0 obj <>stream HS-PS4-1. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. This is determined by the P-and S-wave arrival times. Some places are more prone to earthquakes than others. 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 Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. 0000115324 00000 n The point beneath Earth's surface where rock breaks under stress and causes an earthquake. 0000000956 00000 n Share with Classes. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. Make changes to the sample. minute apart, represent the passage of time HTn0MmcHCB Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. 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. Section A - Operator Information 1. 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. 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. 61 33 0000001533 00000 n Epicenter Location on Earth's surface directly above the focus of the earthquake 5. 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. Once three seismographs have been located, find the time interval between the arrival of the P-wave . Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. 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. Every earthquake is recorded on numerous seismographs located in different directions. What data is used to determine magnitude? "`B(R6sj [CX7p+s =#;~ `'kA Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). 0000079769 00000 n The answer is the San Andreas Fault. miles from the epicenter of an between arrival of P and S waves is called In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. 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