The period of P waves is shorter, than the period of surface waves. epicenter of an earthquake, how In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. minutes? Find 23 millimeters on the right side of the chart and mark that point. Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Mr Gneiss. 12), Analyze and interpret data about natural hazards using direct and indirect evidence graph. ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows - Chegg 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. Section A - Operator Information 1. Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. The real-world earthquake data is viewable via a graphical interface using a scaling map. Lab Activity Locating Epicenters Flashcards | Quizlet 0 At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. Then from the same recordings they determine the earthquake's magnitude, an estimate of the amount of energy released during the earthquake. Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. Focal Depth. 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. The USGS Earthquake Hazards Program is part of the National Earthquake Hazards Reduction Program (NEHRP), established by Congress in 1977, and the USGS Advanced National Seismic System (ANSS) was established by Congress as a NEHRP facility. earthquake though). Record your answer from Lab Exercise #2, Step 1. determine the epicenter using the S P (S minus P) method. S-P interval: The time interval between the arrivals of P and S waves. Also called seismometer. These natural disasters may be mitigated, however, by insightful and creative engineering. (from left to right). PDF ActivityEarthquake Location* - Cascadia Earthscope Earthquake and Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Please answer the following questions using the earthquake video - shake, shake, shake. Tips: Make sure students are reading the S waves and not the P waves. Ask students what fault they think caused this earthquake. Was there an initial quake followed by smaller quakes? The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. travel 3,000 miles. The epicenter is the point directly above it at the surface of the Earth. 12), computer or other device with Internet access, journal or writing paper for each student. 0000103591 00000 n endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream Objective Use data from seismograms to locate the epicenters of earthquakes. miles from the epicenter of an In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. As the drum rotated, the 0000001604 00000 n Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. (Source: USGS, Wikipedia). 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. 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). 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Describe the process of triangulation to locate an epicenter. Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. What are those limits? 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 . 0000001143 00000 n Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. A circle with a radius of the distance to the quake can be drawn. Earthquakes and Seismic Waves - carlisleschools.org Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . Triangulation to Locate an Earthquake | U.S. Geological Survey 0000001533 00000 n Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. What is an earthquake? directly above it on the surface of the earth is called the epicenter. 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. What types of engineers might use this data the most? 0000033429 00000 n 0000004769 00000 n 0000001675 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. What about P waves? Triangulation is required to determine exactly where it happened. This worksheet focuses on using the p and s graph to find different variables. P wave. If your seismograph station is Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. Use the graph to answer the questions that follow. 83 0 obj <> endobj Assess their understanding based on the thoroughness of their answers. 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. (Figure 3):. aqmd. 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. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK What was the lag time (in minutes) at this location? Seismic Waves. So next, students compute the magnitude of this same earthquake by looking at the three simplified seismograms again, but this time selecting each's maximum S wave amplitude (height). Draw your signature, type it, upload its image, or use your mobile device as a signature pad. PDF. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. As discussed earlier in this lesson, this method of determining the epicenter of an . 0000004060 00000 n Quick Tips. (Grades For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. Review their answers to assess their base knowledge of the subject matter. It takes S waves 14. 0000005149 00000 n 5. focus - the point within Earth where an earthquake originates. If you can't find an answer to your question, please contact us. Get the inside scoop on all things TeachEngineering such as new site features, curriculum updates, video releases, and more by signing up for our newsletter! Therefore, the lag 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. 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. 0000055643 00000 n 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc Answer the following questions in the spaces provided. Zip. It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. 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 Click for facts and worksheets in PDF! The spot where those three circles intersect is the epicenter (Figure 13.12). %%EOF 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. Figure 13.10). 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. Using the real-world data in the living lab enables students and teachers to practice analyzing data to solve problems and answer questions, in much the same way that scientists and engineers do every day. Finally, the location of the 3 seismographs are placed on a map and the distance to the epicenter is used to draw a circle with an origin at each seismograph and a radius equal to the distance to the epicenter as taken from each seismogram. Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, Locating An Earthquake Epicenter Lab Answer Key How many minutes elapsed between the arrival of the first P wave and the last measurable How far do S waves travel in 5 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. Thanks for your feedback! 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. Lab 8 - earthquake lab - Lab: Locating the Epicenters of Earthquakes Do you think we will someday be able to prevent earthquakes? waves from a distant earthquake. 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 [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C to the lag time measured at this location? S wave: The second seismic wave of an earthquake. 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. 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." minute apart, represent the passage of time 0000002383 00000 n https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 0000005081 00000 n Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. 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. Based on your answers to the previous question, what is the lag time for locations that are Locating Earthquake Epicenters ( Read ) | Earth Science 0000003966 00000 n DOC Home - Westerville City Schools Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. How do we determine the epicenter of an earthquake? Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. Earthquakes & Volcanoes Test Review Answers. 0000106240 00000 n Use this information to complete the following. PS: We do not share personal information or emails with anyone. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. 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. The spot where those three circles intersect is the epicenter (Figure 13.12). 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. located 1,000 miles from the 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. As you read and complete the activity, take notes so you can complete the. 61 33 Hands-on Activity Earthquakes Living Lab: Finding Epicenters To complete the activity, some prior . When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. *The NGSS logo is a registered trademark of WestEd. trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream Direct students to finish the activity by completing the. Locating an Epicenter Activity - Arkansas Geological Survey 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. This section explains what earthquakes and faults are and what causes earthquakes. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. 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. What is the time lag for the Seattle, Washington, seismic station? 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. Locating_an_epicenter_activity - Activity4 - Course Hero Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. They use three seismographs in a process called triangulation to determine earthquake epicenters. HtA1D41`s(GME$Ke*YdEOYf2-:r. Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. travel time for P waves. U.S. Geological Survey, U.S. Department of the Interior. The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. Construct an oral and written argument supported by empirical evidence and scientific reasoning to support or refute an explanation or a model for a phenomenon or a solution to a problem. What data is used to determine magnitude? 6.17: Locating Earthquake Epicenters - K12 LibreTexts distance from transducer to the focal point. 4. Figure 2. The, amount of time that passes between the Pwave arrival and the Swave arrival is. Earthquakes occur along faults, which are cracks in the Earths crust that build tension. ?t?s=Yt '_( endstream endobj 76 0 obj <>stream 0000002250 00000 n Seismic stations detect earthquakes by the tracings made on seismographs. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. All the arcs should intersect at a common point - the epicenter. Finding the epicenter worksheet answer key. Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif Locating an Earthquake's Epicenter - American Geosciences Institute 0000003855 00000 n approximate period of the surface waves in seconds? 0000001408 00000 n Students learn how engineers build shake tables that simulate the ground motions of the Earth caused by seismic waves in order to test the seismic performance of buildings. Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . 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. ' 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 0000003991 00000 n Practice with Triangulation: Locating an earthquake epicenter. One seismogram indicates the distance to the epicenter. 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. 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. 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 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. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 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. 0000001777 00000 n Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. Use the process of triangulation to locate an earthquake's epicenter. 0000030504 00000 n Virtual Earthquake (tutorial/simulation) 1996. 9 - at that station. The farther a station is from the ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! The instrument detects and documents the intensity, direction and duration of ground vibrations, which are used to determine the epicenters and strength/magnitudes of earthquakes or other seismic events. farther from the epicenter of an earthquake? Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. Earthquake Worksheet Answers earthquake - shaking and vibration of Earth's surface. 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). To do this, have the students use, Find the epicenter of the earthquake on the map (. Wikipedia, The Free Encyclopedia. Before going to the classroom, you will need to: Provide each student, with the following: Earthquakes occur every day all over the United States and all over the world. Download. 0000053998 00000 n Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. PDF EARTHQUAKE EPICENTER LOCATION EXERCISE - Idaho geology Pwaves have the greatest velocity and reach the, seismic station first. Locating Earthquake Epicenter Lab Answer Key buysms de. 0000002094 00000 n Geologists use seismic waves to locate an earthquake's epicenter. Send activity 4 locating an earthquake epicenter worksheet answers via email, link, or fax. Also commonly termed the focus. The lag time for any 6. Run through the investigation yourself and record the data, just to see how long it takes. 0000031066 00000 n seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. The earthquake occurred somewhere along that circle. Copyright 2023. Add to Library. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The travel-time graph 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 by. An earthquake is the violent movement of tectonic plates in the Earth's crust. Must engineers be content with mitigating disasters, instead of preventing them? Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. You will analyze the records and locate the earthquake using a method known To accurately locate an earthquake epicenter, records from three. Next, have student groups answer the eight questions in the. Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. A minimum of three seismic stations is necessary to locate an epicenter. Figure 8. As you may know, people have look numerous times for . Epicenter Location on Earth's surface directly above the focus of the earthquake 5. 2. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream