What are those limits? (from left to right). and S waves depends on the distance from the epicenter of the answer the following question. 4. Considered best for measuring small earthquakes (3.5 M or less). earthquake - shaking and vibration of Earth's surface. Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. To complete the activity, some prior . BDF endstream endobj 74 0 obj <>stream travel 3,000 miles. Then locate and click the link in the center of the page under the question: "How is an earthquake epicenter located and how is magnitude determined"? If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". First locate and mark the three seismic stations on the world map provided below. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 0000001746 00000 n What data is used to determine magnitude? 3. !5(~q* During an earthquake, seismic waves are sent all over the globe. 500p;333aXb3 \a.1. 0000006984 00000 n The period of a wave is the time between two adjacent wave peaks. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . (i. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. 0000031066 00000 n Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. If your seismograph station is HlRnQ?R\>BjK' Earthquakes and Volcanoes. 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. (Grades The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. See Answer. 0000078169 00000 n The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. 0000010002 00000 n Do you agree with this alignment? In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. 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! from the epicenter will be 14 8. by. Add to FlexBook Textbook. Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. The hypocenter is the point within the earth where an earthquake rupture starts. 3000 miles. use slide 6 and answer key slide 7 how can i locate the earthquake epicenter michigan web the epicenter of the earthquake is somewhere on the edge of that circle do the 0 The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. 0000007097 00000 n 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). Today we will be using a traveltime graph, where the vertical separation between, the P and S curves is equal to the difference in the arrival times between the Pwave, and Swave. A circle with a radius of the distance to the quake can be drawn. To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. 0000115324 00000 n Nov 2, 2020 Triangulation is used to determine the location of an earthquake. Resources. 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Next, have student groups answer the eight questions in the. Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. approximate period of the surface waves in seconds? important in helping seismologists determine the epicenter of the earthquake. 0000033429 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. 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 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. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK For example, time for any point that is 3,000 miles Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. 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. 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. 0000004769 00000 n question 1 of 3. Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). An earthquake is the violent movement of tectonic plates in the Earth's crust. HS]o01j6R0iMm4U=wL8]BE< 87 0 obj <> endobj xref 87 28 0000000016 00000 n 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. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. 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. (Figure 3):. Earthquakes occur along faults, which are cracks in the Earths crust that build tension. DocHub v5.1.1 Released! You will analyze the records and locate the earthquake using a method known 11 minutes elapsed between the first P wave and the last measurable surface wave. Legal. The period of P waves is shorter, than the period of surface waves. What about P waves? All rights reserved. It takes S waves 14. What is an earthquake? Must engineers be content with mitigating disasters, instead of preventing them? 0000002840 00000 n 0000004060 00000 n Finding the epicenter worksheet answer key. PDF. Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. 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. 0000002658 00000 n Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Mr Gneiss. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. earthquake. This is determined by the P-and S-wave arrival times. The calculated distance from each seismometer to the earthquake is shown as a circle. Pwaves have the greatest velocity and reach theseismic station first. Moment magnitude scale. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. (, 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. Epicenter Location on Earth's surface directly above the focus of the earthquake 5. activity illustrates how the epicenter of an earthquake is found. (Source: USGS, Wikipedia). 1. Share with Classes. determine the epicenter using the S P (S minus P) method. 0000000856 00000 n If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. 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. In the U.S., earthquake measurements under the MMS (those of magnitude 3.5 or higher) are still commonly erroneously referred to by the general public and media as being on the Richter scale, due to more familiarity with the Richter scale. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. Cross), Give Me Liberty! American Geosciences Institute. 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. P and Swaves are body waves and travel, through the interior of the earth. Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory Note the differences in 0000001736 00000 n 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. This section explains what earthquakes and faults are and what causes earthquakes. 0000006538 00000 n Earthquakes & Volcanoes Test Review Answers. 2. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Millions of people witnessed the motion of the earthquake on television. 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. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. $8.25. Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. seismogram. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. S waves. longer or shorter). Section 8.1 What Is an Earthquake? Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. The process is called triangulation. Dochub is the best editor for changing your documents online. 0000106240 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave . within type by subtype, then by grade, etc. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. 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. However, please review it for the specific setting, materials, students, and conventional safety precautions. 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. What is the time lag for the Seattle, Washington, seismic station? Expert Answer. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. S wave: The second seismic wave of an earthquake. Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. Locating an Epicenter Activity - Arkansas Geological Survey : 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. Show students some of the numerous online animations comparing the movements of P and S waves. Privacy Policy, Seismograms from seismic stations in Fresno, CA, Phoenix, AZ, and Las Vegas, NV, A modified travel time curve for S-P wave, A Modified Travel Time Curve for S-P Wave. Quick Tips. 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 0000003254 00000 n n{6c&6NK*U;=9i%nF 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. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Do you agree with this alignment? Make an overhead copy of each of the handouts. 61 0 obj <> endobj xref Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. They use three seismographs in a process called triangulation to determine earthquake epicenters. 83 0 obj <> endobj Step 1: ans- d) 65 seconds Ste . aqmd. Record your answer from Lab Exercise #2, Step 1. HtA1D41`s(GME$Ke*YdEOYf2-:r. endstream endobj startxref Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. How might they use this information? 13. 0000002250 00000 n 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. P and Swaves are body waves and travelthrough the interior of the earth. Graphs, charts, and images can be used to identify patterns in data. Do limits exist on what science can predict? The real-world earthquake data is viewable via a graphical interface using a scaling map. 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. HS-PS4-1. lag time. 0000053998 00000 n 0 500 1000 1500 2000 2500 3000 H\0y P wave. Hand out the worksheets to the groups and direct them to read through the instructions. It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. Direct students to finish the activity by completing the. [*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

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