activity 4 locating an earthquake epicenter answer key

Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. It takes S waves 14. hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. 0000031066 00000 n gov For online instructions and current fees click here. Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . 0000001143 00000 n HlRnQ?R\>BjK' 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. Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. (Grades 6 - 8). 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. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. 0000002383 00000 n 11 minutes elapsed between the first P wave and the last measurable surface wave. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. 0000001862 00000 n 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. Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. Locating an Epicenter Activity - Arkansas Geological Survey Mark the first arrival of the swave on each seismogram. How Can I Locate the Earthquake Epicenter? | Michigan Technological 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. and S waves depends on the distance from the epicenter of the answer the following question. Direct students to finish the activity by completing the. Assess their understanding based on the thoroughness of their answers. 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Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. A seismograph is securely mounted onto the surface of the earth so that when the earth shakes, the entire unit shakes with it EXCEPT for the mass on the spring, which has inertia and remains in the same place. 0000005149 00000 n 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 1. determine the epicenter using the S P (S minus P) method. Wikipedia, The Free Encyclopedia. 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The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. 0000006984 00000 n Free K-12 standards-aligned STEM curriculum for educators everywhere. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. All 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), 1) Identify the general term for waves released from an earthquake. Section A - Operator Information 1. 0000003991 00000 n Finding the epicenter worksheet answer key. Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). triangulation: A method to determine exactly where an earthquake originates. 0 Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . Earthquakes & Volcanoes Test Review Answers. Subjects: 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 The real-world earthquake data is viewable via a graphical interface using a scaling map. 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. Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. *The NGSS logo is a registered trademark of WestEd. waves from a distant earthquake. This is determined by the P-and S-wave arrival times. The period of P waves is shorter, than the period of surface waves. 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. (Source: USGS, Wikipedia). earthquakes. 0000008088 00000 n 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. 0000000856 00000 n 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. EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. How do we determine the epicenter of an earthquake? What data is used to determine magnitude? During an earthquake, seismic waves are sent all over the globe. Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. 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. 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. 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. 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. Dochub is the best editor for changing your documents online. 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. 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. 0000004769 00000 n Triangulation to Locate an Earthquake | U.S. Geological Survey Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. !5(~q* Please answer the following questions using the earthquake video shake, shake, shake. This is determined by the P-and S-wave arrival times. The point of origin of an earthquake is called its focus and the point on the Earth's surface directly above the focus is the epicenter. As you may know, people have look numerous times for . Subject Areas: Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. 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. 9 - 0000002507 00000 n Shear wave from earthquake, moving slower than primary waves, through solid material only. Scientists use triangulation to find the epicenter of an earthquake. Mr Gneiss. How is the magnitude of an earthquake determined? Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. P and S arrivals, you can now locate an earthquake your answers below. 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. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. 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. endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream 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. Figure 1 is a simplified example of a locating the epicenter of an earthquake activity - TeachersPayTeachers to the lag time measured at this location? Moment magnitude scale. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. How can you locate an earthquake's epicenter? 12), Evaluate ways that technology can impact individuals, society, and the environment. 9 - Quick Tips. Short for "primary wave" or "pressure wave." If you can't find an answer to your question, please contact us. What data is used to determine magnitude? 4. and S waves to travel any distance up to Lab Activity Locating Epicenters Flashcards | Quizlet Pwaves have the greatest velocity and reach the, seismic station first. Apr 8, 2020 One seismogram indicates the distance to the epicenter. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. 0000001562 00000 n What types of engineers might use this data the most? long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? What is the time lag for the Seattle, Washington, seismic station? 107 0 obj <>stream 0000002658 00000 n Use this information to complete the following. S-P interval: The time interval between the arrivals of P and S waves. 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. 0000002840 00000 n All the arcs should intersect at a common point - the epicenter. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. PDF EARTHQUAKE EPICENTER LOCATION EXERCISE - Idaho geology As discussed earlier in this lesson, this method of determining the epicenter of an . After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. 17 Station St., Ste 3 Brookline, MA 02445. important in helping seismologists determine the epicenter of the earthquake. 3000 miles. 0000003254 00000 n (Figure 3):. Do you agree with this alignment? hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? Focal Depth. Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. at that station. The answer is the San Andreas Fault. by. 0000001736 00000 n Locating Earthquake Epicenter Lab Answer Key buysms de. Do you agree with this alignment? 4. fault - a fracture in Earth's crust where the rocks on either side have moved. (from left to right). Hand out the worksheets to the groups and direct them to read through the instructions. How does distance from the epicenter affect the S-P time interval? Every year, earthquakes cause death and destruction worldwide. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. 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) . Solved Lab Exercise #2: Locating the Epicenter of an - Chegg If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. 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. 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. An earthquake is the violent movement of tectonic plates in the Earth's crust. Swaves arrive at the seismic station after the Pwaves. 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. Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. 0000002009 00000 n DOC Home - Westerville City Schools Use the graph to answer the questions that follow. Also commonly termed the focus. The farther away the epicenter is, the greater the difference . 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. %PDF-1.5 % One seismogram indicates the distance to the epicenter. 61 33 !D,X2:azTG)kPT~Mj 4>d w@O'. P and Swaves are body waves and travelthrough the interior of the earth. Hands-on Activity Earthquakes Living Lab: Finding Epicenters Y$Kr;V6[;Dq vg~cx:A[^jCssupwD endstream endobj 80 0 obj <> endobj 81 0 obj <>stream Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. First locate and mark the three seismic stations on the world map provided below. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. PDF Finding Epicenters Lab Answer Key Lab Pdf 0000006011 00000 n Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. How does the lag time change as you get farther and 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. (Source: USGS, Wikipedia). Epicenter is the location on the surface of the Earth directly above where the earthquake starts. A circle with a radius of the distance to the quake can be drawn. technology, engineering or math (STEM) educational standards. 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. Review their answers to assess their base knowledge of the subject matter. 6.17: Locating Earthquake Epicenters - K12 LibreTexts d>(ZvO= It is slower than the same earthquake's P wave and cannot travel through liquids. Student exploration Graphing Skills SE Key Gizmos Explore Learning. P wave. 0000001604 00000 n 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. Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. from the epicenter will be 14 8. Describe the process of triangulation to locate an epicenter. minute apart, represent the passage of time 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). 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? How does the period of the P waves compare to the period of the surface waves? ' 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 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. 0000078100 00000 n 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. 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." Once three seismographs have been located, find the time interval between the arrival of the P-wave . It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. We additionally manage to pay for . 01. Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. One seismogram indicates the distance to the epicenter. 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. Send activity 4 locating an earthquake epicenter worksheet answers via email, link, or fax. To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. earthquake - shaking and vibration of Earth's surface. Richter scale Method of earthquake measurement based on the amplitude of seismic . (i. Virtual Earthquake (tutorial/simulation) 1996. HS-PS4-1. Every earthquake is recorded on numerous seismographs located in different directions. CH 02 HW - Chapter 2 physics homework for Mastering, Leadership class , week 3 executive summary, I am doing my essay on the Ted Talk titaled How One Photo Captured a Humanitie Crisis https, School-Plan - School Plan of San Juan Integrated School, SEC-502-RS-Dispositions Self-Assessment Survey T3 (1), Techniques DE Separation ET Analyse EN Biochimi 1, Use a travel-time graph to convert lag time into distance. 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. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. www.teachengineering.org/activities/view/csm_findingepicenters_activity1, Search curriculum by Common Core standards, http://www.teachengineering.org/livinglabs/earthquakes/, Click to view other curriculum aligned to this Performance Expectation, Finding Epicenters and Measuring Magnitudes Worksheet, Finding Epicenters and Measuring Magnitudes (docx), Finding Epicenters and Measuring Magnitudes (pdf), Finding Epicenters and Measuring Magnitudes Example Answers (docx), Finding Epicenters and Measuring Magnitudes Example Answers (pdf), Earthquakes Living Lab: FAQs about P Waves, S Waves and More, Seismic Waves: How Earthquakes Move Through the Earth, Earthquakes Living Lab: Designing for Disaster, http://www.teachengineering.org/livinglabs/index.php, https://www.newpathonline.com/api_player/enus_54_6304/LXX/index.html. Earthquakes and Volcanoes. Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 0000000956 00000 n 13. P wave: The first seismic wave of an earthquake. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. All rights reserved. %PDF-1.4 % As the drum rotated, the m>r/Q[6 13 4 locating an earthquake epicenter geosciences libretexts .

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