activity 4 locating an earthquake epicenter answer key

Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. seismogram. What did it feel like? Before looking at the Earthquakes Living Lab, have pairs complete the, Then guide the teams to the Earthquakes Living Lab via the living lab website at. 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. 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. We have answers to the most popular questions from our customers. Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Scientists use triangulation to find the epicenter of an earthquake. Figure 1 is a simplified example of a The epicenter is the point directly above it at the surface of the Earth. What types of engineers might use this data the most? First locate and mark the three seismic stations on the world map provided below. Last updated November 26, 2013. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. Free K-12 standards-aligned STEM curriculum for educators everywhere. %PDF-1.3 % 0000030504 00000 n Find 23 millimeters on the right side of the chart and mark that point. !5(~q* =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q Adjust the timing to the class period, remembering that you will need time to introduce the investigation, clean up afterwards, and re-set up for the next class (if you are working with more than one class). 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. 0000002383 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. A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. 0 500 1000 1500 2000 2500 3000 Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. Locating Earthquake Epicenter Lab Answer Key buysms de. One seismogram indicates the distance to the epicenter. Review their answers to assess their base knowledge of the subject matter. S-P interval: The time interval between the arrivals of P and S waves. PDF Example Answers - TeachEngineering Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. 107 0 obj <>stream The, amount of time that passes between the Pwave arrival and the Swave arrival is. ?t?s=Yt '_( endstream endobj 76 0 obj <>stream Type text, add images, blackout confidential details, add comments, highlights and more. (Listen to student ideas.) Reading Strategy. Pwaves have the greatest velocity and reach theseismic station first. Lab Activity Locating Epicenters Teaching Resources | TPT P wave: The first seismic wave of an earthquake. inch = 500 km. Hand out the worksheets to the groups and direct them to read through the instructions. 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. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. How does distance from the epicenter affect the S-P time interval? 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. %PDF-1.4 % Do you agree with this alignment? important in helping seismologists determine the epicenter of the earthquake. 12), computer or other device with Internet access, journal or writing paper for each student. To do this, have the students use, Find the epicenter of the earthquake on the map (. A seismograph is securely mounted onto the surface of the earth so that when the earth shakes, the entire unit shakes with it EXCEPT for the mass on the spring, which has inertia and remains in the same place. to the lag time measured at this location? Finding the Epicenter Determine the epicenter distance from three different seismographs. Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. 61 33 Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory Mark the first arrival of the swave on each seismogram. 0000001777 00000 n technology, engineering or math (STEM) educational standards. Notify the classroom teacher of technology needs (overhead projector). 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." 6. Triangulation is required to determine exactly where it happened. 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. Describe the process of triangulation to locate an epicenter. lag time. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. /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$II'y ??O's^3@[{*{VT?nsNS!ilq]mFO?? The time Earthquakes and Seismic Waves Key Concepts . Triangulation to Locate an Earthquake | U.S. Geological Survey Also commonly termed the focus. Use Figure 4.5 and the travel-time graph in Figure 4.4 to determine the distance between each station and THREE SEISMOGRAMS the epicenter. Describe what the "magnitude" of an earthquake is. 12), Evaluate ways that technology can impact individuals, society, and the environment. 100 km 4.1 km/s 24.4 s; Finding the epicenter (continued) data table analyze and conclude answer the following questions on a separate sheet of paper. One seismogram indicates the distance to the epicenter. Student exploration Graphing Skills SE Key Gizmos Explore Learning. Geologists use seismic waves to locate an earthquake's epicenter. To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an 3000 miles. Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. 0000002094 00000 n HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N Z./$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 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. 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. 0000002544 00000 n Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Great exercise for Regents Earth Science. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. 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 . Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. Three seismographs are needed. Run through the investigation yourself and record the data, just to see how long it takes. P and Swaves are body waves and travel, through the interior of the earth. at that station. Answer the following questions in the spaces provided. Three seismographs are needed. HtA1D41`s(GME$Ke*YdEOYf2-:r. consider a seismograph stationed 3, epicenter of an earthquake, how In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. There are two sets of data and maps to do this activity/ lab for than once. The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. aqmd. 0000001861 00000 n 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. 0000031066 00000 n HTn0MmcHCB Quick Tips. minute apart, represent the passage of time Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. locate and label the epicenter of the earthquake on this map. 0000001746 00000 n 01. All the arcs should intersect at a common point - the epicenter. (Source: USGS, Wikipedia). 0000004457 00000 n 0000001893 00000 n DOC Home - Westerville City Schools As discussed earlier in this lesson, this method of determining the epicenter of an . Draw your signature, type it, upload its image, or use your mobile device as a signature pad. During an earthquake, seismic waves are sent all over the globe. The longer the time is between the P-and S-wave . (, 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. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. Swaves arrive at the seismic station after the Pwaves. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 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. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc When the tension becomes too great, the fault slips, causing an earthquake. !D,X2:azTG)kPT~Mj 4>d w@O'. The lag time for any How do we determine the epicenter of an earthquake? Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . Mr Gneiss. What is an earthquake? 4. 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. Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. X!.43p2t!}SLx-3z.KN4X+H\+vk? BDF endstream endobj 74 0 obj <>stream 0000055643 00000 n 0000098546 00000 n 0000103591 00000 n Focus. moment magnitude scale: Similar to the Richter scale, but replacing its use starting in the 1970s for more accuracy in measuring big earthquakes (magnitudes > 3.5) from greater distances. between arrival of P and S waves is called Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; earthquake lab lab: locating the epicenters of earthquakes objective measurable learning outcomes use data from seismograms to locate the epicenters of Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew My Library Discovery Institutions Western Governors University Southern New Hampshire University Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. 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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. The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). Show students some of the numerous online animations comparing the movements of P and S waves. 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 https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 17 Station St., Ste 3 Brookline, MA 02445. Material is sheared side to side, perpendicular to the direction of wave propagation. Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. Expert Answer. If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. 0000078169 00000 n 0000010002 00000 n The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. Thanks for your feedback! How does distance from the epicenter affect the magnitude (height) of the seismograph reading? How are S and P waves used to determine how far away epicenters are? 0000003966 00000 n 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. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 Locating An Earthquake Epicenter Worksheet Answers surface wave? To complete the activity, some prior . 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. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. Next, have student groups answer the eight questions in the. The seismometers are shown as green dots. 0000007097 00000 n You will receive your score and answers at the end. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. Students also investigate which structural designs are most likely to survive an earthquake. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C 6.17: Locating Earthquake Epicenters - K12 LibreTexts

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