Figure 2. different types of seismic waves. 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. Step 1: ans- d) 65 seconds Ste . (Source: USGS, Wikipedia). 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. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. How are S and P waves used to determine how far away epicenters are? hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! Reading Strategy. P and S arrivals, you can now locate an earthquake your answers below. Graphs, charts, and images can be used to identify patterns in data. Earthquakes and Volcanoes. 1,000 miles from the epicenter of an earthquake? 0000103591 00000 n Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream locate and label the epicenter of the earthquake on this map. 1) Identify the general term for waves released from an earthquake. What about P waves? 0000003966 00000 n 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. atrial depolarization. earthquakes. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. $8.25. A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D Make an overhead copy of each of the handouts. Thanks for your feedback! This page titled 13.4: Locating an Earthquake Epicenter is shared under a CC BY-SA license and was authored, remixed, and/or curated by Deline, Harris & Tefend (GALILEO Open Learning Materials) . Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. epicenter, the longer the lag time measured (, Find the S-P interval for each seismogram and record answers in the S-P column of, Find the distance to the epicenter (in kilometers) from each recording station and record answers in Table 1. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK 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 Legal. 0000004511 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. We have answers to the most popular questions from our customers. How many minutes elapsed between the arrival of the first P wave and the last measurable Apr 8, 2020 One seismogram indicates the distance to the epicenter. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Success is figuring out that the estimated magnitude is 5.9. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. 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. Practice with Triangulation: Locating an earthquake epicenter. H\0y 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 . 0000053998 00000 n earthquake. Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. 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. 0000001978 00000 n Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . 83 0 obj <> endobj 0 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 *The NGSS logo is a registered trademark of WestEd. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. As the drum rotated, the Section A - Operator Information 1. 107 0 obj <>stream 0000000956 00000 n An earthquake is the violent movement of tectonic plates in the Earth's crust. 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 https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 0000030968 00000 n The, amount of time that passes between the Pwave arrival and the Swave arrival is. As you read and complete the activity, take notes so you can complete the. 0000079769 00000 n determine the epicenter using the S P (S minus P) method. Student exploration Graphing Skills SE Key Gizmos Explore Learning. 0000002009 00000 n ' 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 HTn0MmcHCB Answer the following questions in the spaces provided. Finding the Epicenter Determine the epicenter distance from three different seismographs. Thanks for your feedback! Millions of people witnessed the motion of the earthquake on television. Specifically, seismographs make recordings (seismograms) of the seismic waves generated from earthquakes, providing engineers and other researchers with data that they use to make predictions about future earthquakes. First locate and mark the three seismic stations on the world map provided below. within type by subtype, then by grade, etc. Record your answer from Lab Exercise #2, Step 1. Finding the Epicenter. approximate period of the surface waves in seconds? 0000002507 00000 n Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. ?t?s=Yt '_( endstream endobj 76 0 obj <>stream For example, 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. 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. 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." (Grades 0000004224 00000 n Earthquakes and Seismic Waves Key Concepts . Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. How does the lag time change as you get farther and 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. 0000004457 00000 n 0000000016 00000 n hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? Type text, add images, blackout confidential details, add comments, highlights and more. aqmd. miles from the epicenter of an 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. Richter scale Method of earthquake measurement based on the amplitude of seismic . To do this, have the students use, Find the epicenter of the earthquake on the map (. Seismic Waves. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. 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. The point beneath Earth's surface where rock breaks under stress and causes an earthquake. Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). 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. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. earthquake though). Finding the epicenter of an Earthquake by Ah - Ha Lessons 5.0 (1) $3.00 PDF Activity This lesson teaches the student the process scientists use to locate the epicenter of an EQ. The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. Mapping the history of natural hazards in a region, combined with an understanding of related geologic forces can help forecast the locations and likelihoods of future events. 0000001862 00000 n [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C 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. (Figure 3):. PDF. The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. Do you think we will someday be able to prevent earthquakes? What was the lag time (in minutes) at this location? The travel-time graph 13 4 locating an earthquake epicenter geosciences libretexts . So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. 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. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. Use the graph to answer the questions that follow. Do you agree with this alignment? Every year, earthquakes cause death and destruction worldwide. activity illustrates how the epicenter of an earthquake is found. Use Figure 5 and the travel-time graph in Figure 4 to determine . Epicenter. 0000078169 00000 n Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. 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. Place a ruler (or straight edge) on the chart between the points you marked for the distance to the epicenter and the amplitude. 5. focus - the point within Earth where an earthquake originates. 9 - Subjects: Seismograms What data is used to determine magnitude? Develop a solution to a technological problem that has the least negative environmental and social impact. : 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. There are two sets of data and maps to do this activity/ lab for than once. To locate the epicenter of the earthquake, seismologists use the . Three seismographs are needed. To accurately locate an earthquake epicenter, records from three. triangulation: A method to determine exactly where an earthquake originates. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. 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