How many minutes elapsed between the arrival of the first P wave and the last measurable Once three seismographs have been located, find the time interval between the arrival of the P-wave . The simulation renders three circles on a map and directs students to find the epicenter. (Grades 6 - 8). Describe the logarithmic nature of the earthquake magnitude scale. 17 Station St., Ste 3 Brookline, MA 02445. (Grades 9 - 12). PDF Lecture 3 Activity: Locating an Earthquake Epicenter Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. The epicenter of an earthquake can be found using the difference between the arrival of the Primary and Secondary waves. What types of engineers might use this data the most? ' 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 4. 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. Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an 9 - follow our easy steps to get your lab activity locating epicenters answer key well prepared rapidly choose the template in the library enter all necessary information in the required llable areas the 0000005149 00000 n Hands-on Activity Earthquakes Living Lab: Finding Epicenters Make changes to the sample. Swaves arrive at the seismic station after the Pwaves. It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. Student exploration Graphing Skills SE Key Gizmos Explore Learning. What are those limits? 0000001533 00000 n 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Locating Epicenter Lab Worksheet (1).docx, Updating Patient Registration B at 08_10_2022 03_03 PM.pdf, You need to deploy an Azure environment that meets the company migration plan, Step 1 of 2 Program 1 A Simple Python Program Welcome with Two Messages Running, More women in academia report polarization assimilation in male skewed and male, A TACACS B RADIUS C Kerberos D SAML Correct Answer D QUESTION 321 A network, PTSD in Children and Adolescents - Copy - Copy - Copy - Copy.docx, Effects of Excitation and Prime Mover Control The excitation control helps to, D1 Fundamental security design principles.docx, Question 5 Correct Mark 100 out of 100 Remove flag Question 6 Correct Mark 100, Thomas Concurrence broadly attacked current NDD Federal gov should be allowed to, 769 Water at 15C is to be heated to 65C by passing it over a bundle of 4 m. Course Hero is not sponsored or endorsed by any college or university. Earthquakes and Seismic Waves - carlisleschools.org Graphs, charts, and images can be used to identify patterns in data. Earthquake Worksheet Answers Millions of people witnessed the motion of the earthquake on television. !D,X2:azTG)kPT~Mj 4>d w@O'. (Figure 3):. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. 0000001604 00000 n This section explains what earthquakes and faults are and what causes earthquakes. As the drum rotated, the Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. 0000031066 00000 n Focal Depth. Activity 4 locating an earthquake epicenter answers: Fill out & sign https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 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. The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. distance = travel time for S waves Learn more How Can I Locate the Earthquake Epicenter? Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. 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. Was there an initial quake followed by smaller quakes? Upload a document. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. 3. All the arcs should intersect at a common point - the epicenter. Share with Classes. minutes? (Source: USGS, Wikipedia). Short for "secondary wave" or "shear wave." Locating Earthquake Epicenters ( Read ) | Earth Science Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif 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? Do you agree with this alignment? longer or shorter). farther from the epicenter of an earthquake? 1. The lag time for any What data is used to determine magnitude? Edit your locating an earthquake epicenter worksheet answers online. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. 13. 87 0 obj <> endobj xref 87 28 0000000016 00000 n If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. 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. Focus. Run through the investigation yourself and record the data, just to see how long it takes. Type text, add images, blackout confidential details, add comments, highlights and more. MS-ESS3-2. %PDF-1.4 % 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. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. Figure 1 is a simplified example of a Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. Scientists use triangulation to find the epicenter of an earthquake. 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. To do this, have the students use, Find the epicenter of the earthquake on the map (. 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. 0000002009 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 One seismogram indicates the distance to the epicenter. 0000003966 00000 n ?t?s=Yt '_( endstream endobj 76 0 obj <>stream The answer is the San Andreas Fault. The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, question 1 of 3. atrial depolarization. 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. 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. 13 4 locating an earthquake epicenter geosciences libretexts . surface wave? 6. Make arrangements so that each student group has a computer with Internet access. Download. 0000007783 00000 n Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. 1. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. 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Locating an Epicenter Activity - Arkansas Geological Survey How does the period of the P waves compare to the period of the surface waves? time for any point that is 3,000 miles 0000003254 00000 n 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. All rights reserved. The farther away the epicenter is, the greater the difference . 9 - HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK "`B(R6sj [CX7p+s =#;~ `'kA 0000030504 00000 n epicenter, the longer the lag time measured 1. Point on Earth's surface directly above an earthquake's focus. 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. The calculated distance from each seismometer to the earthquake is shown as a circle. We additionally manage to pay for . 0000002507 00000 n 0000000956 00000 n Finding the Epicenter Determine the epicenter distance from three different seismographs. 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. The vertical lines, spaced one HtA1D41`s(GME$Ke*YdEOYf2-:r. (Source: USGS). 11 minutes elapsed between the first P wave and the last measurable surface wave. 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. This investigation is considered generally safe to do with students. 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. 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. In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. Tips: Make sure students are reading the S waves and not the P waves. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Solved Lab Exercise #2: Locating the Epicenter of an - Chegg P and Swaves are body waves and travel, through the interior of the earth. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. Use Figure 5 and the travel-time graph in Figure 4 to determine . earthquake though). travel time for P waves. triangulation: A method to determine exactly where an earthquake originates. Some places are more prone to earthquakes than others. 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. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy.