activity 4 locating an earthquake epicenter answer key activity 4 locating an earthquake epicenter answer key

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). 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. 6. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. Subjects: pen recorded the arrival of P, S, and surface Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. To do this, have the students use, Find the epicenter of the earthquake on the map (. It takes S waves 14. 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. You will analyze the records and locate the earthquake using a method known long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? different types of seismic waves. Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. USGS Earthquake Hazards Program Seismographs - Keeping Track of Earthquakes | U.S. Geological Survey Short for "primary wave" or "pressure wave." m>r/Q[6 [N'. 0000078169 00000 n 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. Seismic Waves. First locate and mark the three seismic stations on the world map provided below. 0000115324 00000 n Material is sheared side to side, perpendicular to the direction of wave propagation. Geologists use seismic waves to locate an earthquake's epicenter. Civil engineers, who design houses, apartment buildings, schools, skyscrapers, bridges, highways, tunnels, water treatment facilities, factories and other structures, may use this data to help them create safer structures that are less likely to sustain damage during earthquakes. Finding the Epicenter Determine the epicenter distance from three different seismographs. Ask students what fault they think caused this earthquake. PDF Finding Epicenters Lab Answer Key Lab Pdf minutes = 6 minutes. *The NGSS logo is a registered trademark of WestEd. Most of these earthquakes are small tremors that cant be felt by people, but occasionally an earthquake occurs on a large magnitude that causes millions of dollars in property damage and kills hundreds to thousands of people. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. PDF Locating An Earthquake Epicenter Lab Answers - Full PDF Every year, earthquakes cause death and destruction worldwide. 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. How might they use this information? Legal. determine the epicenter using the S P (S minus P) method. approximate period of the surface waves in seconds? 9 - Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory 0000005149 00000 n 0000001893 00000 n How does the period of the P waves compare to the period of the surface waves? Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. Record your answer from Lab Exercise #2, Step 1. triangulation: A method to determine exactly where an earthquake originates. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. The simulation renders three circles on a map and directs students to find the epicenter. : 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. The real-world earthquake data is viewable via a graphical interface using a scaling map. 0000008088 00000 n 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. As discussed earlier in this lesson, this method of determining the epicenter of an . Direct students to finish the activity by completing the. xb``d``Id`a`Ab@_ :iWGi>|q` Describe the process of triangulation to locate an epicenter. ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows - Chegg Mark the first arrival of the swave on each seismogram. Earthquakes & Volcanoes Test Review Answers. 9 - The vertical lines, spaced one 13.4: Locating an Earthquake Epicenter - Geosciences LibreTexts Use Figure 5 and the travel-time graph in Figure 4 to determine . 0000002544 00000 n Locating Earthquake Epicenters ( Read ) | Earth Science 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 0000004224 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. [*aiLG?+J\QI86~}ooRrr!pm}dk@dBbZPMZlC4C\9^ SM.R\!H+$|+DUzt^w{" %&{KXjT'9yzT^UFe:+f(`PU_9%EW@\)?i qp!\G Z endstream endobj 75 0 obj <>stream The calculated distance from each seismometer to the earthquake is shown as a circle. 0000098546 00000 n PDF EARTHQUAKE EPICENTER LOCATION EXERCISE - Idaho geology "`B(R6sj [CX7p+s =#;~ `'kA 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. trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. The farther away the epicenter is, the greater the difference . 83 0 obj <> endobj The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. All rights reserved. In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. 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 longer or shorter). earthquake - shaking and vibration of Earth's surface. These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. 0000007097 00000 n The travel-time graph The hypocenter is the point within the earth where an earthquake rupture starts. Earthquakes and Seismic Waves - carlisleschools.org A minimum of three seismic stations is necessary to locate an epicenter. locating the epicenter of an earthquake activity - TeachersPayTeachers How Can I Locate the Earthquake Epicenter? | Michigan Technological The seismometers are shown as green dots. 0 500 1000 1500 2000 2500 3000 Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. !D,X2:azTG)kPT~Mj 4>d w@O'. The period of a wave is the time between two adjacent wave peaks. 0000033429 00000 n The epicenter of an earthquake can be found using the difference between the arrival of the Primary and Secondary waves. The magnitude is the logarithm of the amplitude of the ground wave. 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! surface wave? graph. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. The magnitude determination is based on seismic data. Use this information to complete the following. 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. directly above it on the surface of the earth is called the epicenter. A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. 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. One seismogram indicates the distance to the epicenter. 12), Seek, evaluate, and use a variety of specialized resources available from libraries, the Internet, and the community to find scientific information on Earth's history If a quake is far from the seismograph, the P-waves arrive long before the S-waves. Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. The spot where those three circles intersect is the epicenter (Figure 13.12). 0000002658 00000 n P and Swaves are body waves and travelthrough the interior of the earth. atrial depolarization. Locating an Epicenter Activity - Arkansas Geological Survey The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. What was the lag time (in minutes) at this location? epicenter of an earthquake, how Earthquakes and Seismic Waves Key Concepts . HTn0MmcHCB Epicenter. 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. Do you agree with this alignment? Apr 8, 2020 One seismogram indicates the distance to the epicenter. Next, have student groups answer the eight questions in the. PDF Page - 1 Lab 08 - Seismology - Locating the Epicenter of an Earthquake !5(~q* 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. 6.17: Locating Earthquake Epicenters - K12 LibreTexts Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). located 1,000 miles from the Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, 0000008845 00000 n 61 0 obj <> endobj xref Thus technology use varies from region to region and over time. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. How does distance from the epicenter affect the magnitude (height) of the seismograph reading? 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. 0000000016 00000 n Alignment agreement: 0000006011 00000 n 1. 0000005081 00000 n 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. Use the process of triangulation to locate an earthquake's epicenter. hbbd``b`$C`q9 X_$_g`bdxc`X (Grades These natural disasters may be mitigated, however, by insightful and creative engineering. 107 0 obj <>stream Also called seismometer. earthquakes. minutes? Hand out the worksheets to the groups and direct them to read through the instructions. Resources. d>(ZvO= Thanks for your feedback! (, 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. The spot where those three circles intersect is the epicenter (Figure 13.12). Activity 4 locating an earthquake epicenter answers: Fill out & sign Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. 0000002094 00000 n Subject Areas: epicenter, the longer the lag time measured 0000010002 00000 n (Source: USGS, Wikipedia). within type by subtype, then by grade, etc. 0000006538 00000 n There are two sets of data and maps to do this activity/ lab for than once. 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. Question 5 of 22 4.55/ 4.55 Points Questions 5 through 11 are based on Lab Exercise #2: Locating the Epicenter of an Earthquake. Graphs, charts, and images can be used to identify patterns in data. 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. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. 0000003855 00000 n Do you think we will someday be able to prevent earthquakes? Copyright 2023. 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. ' 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 0000004511 00000 n This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 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. 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. n{6c&6NK*U;=9i%nF Earthquakes and Volcanoes. Do you agree with this alignment? Make an overhead copy of each of the handouts. Draw your signature, type it, upload its image, or use your mobile device as a signature pad. Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. As you may know, people have look numerous times for . What are those limits? As you read and complete the activity, take notes so you can complete the. This page titled 13.4: Locating an Earthquake Epicenter is shared under a CC BY-SA license and was authored, remixed, and/or curated by Deline, Harris & Tefend (GALILEO Open Learning Materials) . Figure 2 is a seismic wave travel-time 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. What data is used to determine magnitude? 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. miles from the epicenter of an minute apart, represent the passage of time Earthquakes occur along faults, which are cracks in the Earths crust that build tension. waves from a distant earthquake. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". 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. 0000079769 00000 n travel time for P waves. The distance is in kilometers. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. Richter scale Method of earthquake measurement based on the amplitude of seismic . 0000030240 00000 n How far do S waves travel in 5 Hands-on Activity Earthquakes Living Lab: Finding Epicenters 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. a project of D2L (www.achievementstandards.org). %PDF-1.4 % How can you locate an earthquake's epicenter? Triangulation to Locate an Earthquake | U.S. Geological Survey THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. Sixty-seven people lost their lives, and property damage was estimated at $6 billion. (Figure 3):. Key Facts & Information. DOC Home - Westerville City Schools American Geosciences Institute. Step 1: ans- d) 65 seconds Ste . 1. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C 0000001777 00000 n P and S arrivals, you can now locate an earthquake your answers below. Swaves arrive at the seismic station after the Pwaves. Great exercise for Regents Earth Science. %PDF-1.3 % 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 . Considered best for measuring small earthquakes (3.5 M or less). Lab 8 - earthquake lab - Lab: Locating the Epicenters of Earthquakes approximate period of the surface waves in seconds? If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. 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." 0000031066 00000 n distance from transducer to the focal point. 0000003966 00000 n 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. 0000003254 00000 n 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. endstream endobj startxref Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. For upper grades, have students work individually, do two of the three seismic area tutorials, and look up historical earthquakes to learn their magnitudes, and make data tables or graphs with this information. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. Section A - Operator Information 1. P wave: The first seismic wave of an earthquake. (5 minutes) Discuss how gathering information on epicenters can be applied. 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. PDF Example Answers - TeachEngineering endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream Lab Activity Locating Epicenters Flashcards | Quizlet question 1 of 3. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. 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. To complete the activity, some prior . (i. Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. Student exploration Graphing Skills SE Key Gizmos Explore Learning. For example, It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. 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.