1. Student exploration Graphing Skills SE Key Gizmos Explore Learning. epicenter, the longer the lag time measured 0000001675 00000 n
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. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. 0000033429 00000 n
Wikipedia, The Free Encyclopedia. !D,X2:azTG)kPT~Mj 4>d w@O'. When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. 0000002250 00000 n
HTn0MmcHCB Short for "secondary wave" or "shear wave." To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. (, 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. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q Direct student pairs to independently complete the tutorial/simulation to find an epicenter location via the triangulation method and compute the earthquake magnitude: The simulation directs students to look at three simplified seismograms from seismic stations in Chile (Talca, Santiago, Osorno) and select the correct measurements of the S-P intervals. 0000002658 00000 n
Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. Where the 3 circles intersect is the approximate location to the epicenter of the earthquake. Sharing Information/Thinking Ahead: In the Evaluate section of the worksheet, student pairs are asked to compose answers to two questionswhether they think seismology is a reliable science and ways seismic data is useful for engineers. 0000007783 00000 n
The longer the time is between the P-and S-wave . Scientists use triangulation to find the epicenter of an earthquake. gov For online instructions and current fees click here. travel time for P waves. Use Figure 4.5 and the travel-time graph in Figure 4.4 to determine the distance between each station and THREE SEISMOGRAMS the epicenter. Notify the classroom teacher of technology needs (overhead projector).
PDF EARTHQUAKE EPICENTER LOCATION EXERCISE - Idaho geology atrial depolarization. 0000004511 00000 n
Describe the process of triangulation to locate an epicenter. 107 0 obj
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hbbd``b`$C`q9 X_$_g`bdxc`X A minimum of three seismic stations is necessary to locate an epicenter. (Source: USGS, Wikipedia). If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". 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. Describe the logarithmic nature of the earthquake magnitude scale. 0000005544 00000 n
Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. 0000008088 00000 n
Edit your locating an earthquake epicenter worksheet answers online. Practicing this technique, the students work several problems on a map of the US. Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. within type by subtype, then by grade, etc. 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 types of engineers might use this data the most? The period of P waves is shorter, than the period of surface waves. Legal. Subjects: Question 5 of 22 4.55/ 4.55 Points Questions 5 through 11 are based on Lab Exercise #2: Locating the Epicenter of an Earthquake. Triangulation is required to determine exactly where it happened. In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. Earthquakes occur along faults, which are cracks in the Earths crust that build tension. 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. 0000005081 00000 n
Review their answers to assess their base knowledge of the subject matter. P wave. Use this information to complete the following. Develop a solution to a technological problem that has the least negative environmental and social impact. surface wave? To locate the epicenter of the earthquake, seismologists use the . 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. Book: Laboratory Manual for Introductory Geology (Deline, Harris & Tefend), { "13.01:_Introduction" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
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Students also investigate which structural designs are most likely to survive an earthquake. 0000106240 00000 n
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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. 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 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. The, amount of time that passes between the Pwave arrival and the Swave arrival is. Short for "primary wave" or "pressure wave." Based on your answers to the previous question, what is the lag time for locations that are Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an 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). They use three seismographs in a process called triangulation to determine earthquake epicenters. All the arcs should intersect at a common point - the epicenter. 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. 0000001861 00000 n
What did it feel like? 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. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. endstream
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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. The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. Earthquakes and Seismic Waves Key Concepts . Ask students what fault they think caused this earthquake. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. Download. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. 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. PDF Locating an Epicenter Activity - Arkansas Geological Survey 1. Great exercise for Regents Earth Science. time for any point that is 3,000 miles Figure 2 is a seismic wave travel-time n{6c&6NK*U;=9i%nF 0000031066 00000 n
For upper grades, have students work individually, do two of the three seismic area tutorials, and look up historical earthquakes to learn their magnitudes, and make data tables or graphs with this information. After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science,
Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. between arrival of P and S waves is called The real-world earthquake data is viewable via a graphical interface using a scaling map. Seismographs - Keeping Track of Earthquakes | U.S. Geological Survey The answer is the San Andreas Fault. locate and label the epicenter of the earthquake on this map. What is an earthquake? distance = travel time for S waves Explains how to find an earthquake epicenter using at least three seismograph stations. ?t?s=Yt '_(
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Epicenter Location on Earth's surface directly above the focus of the earthquake 5. *The NGSS logo is a registered trademark of WestEd. Geologists use seismic waves to locate an earthquake's epicenter. DocHub v5.1.1 Released! Then do the same for the S-wave. Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) To do this, have the students use, Find the epicenter of the earthquake on the map (. For example, Finding the epicenter worksheet answer key. Do you think we will someday be able to prevent earthquakes? In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. minutes? The spot where those three circles intersect is the epicenter (Figure 13.12). 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. 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. You will receive your score and answers at the end. 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. inch = 500 km. 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. Free K-12 standards-aligned STEM curriculum for educators everywhere. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 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. These natural disasters may be mitigated, however, by insightful and creative engineering. Locating An Earthquake Epicenter Worksheet Answers The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). For this activity, select the "Chile" box. Assess their understanding based on the thoroughness of their answers. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). 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." Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. earthquakes. 0000098546 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. You can also download it, export it or print it out. 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. 0000030240 00000 n
PDF Finding Epicenters and Measuring Magnitudes Worksheet and S waves to travel any distance up to Make an overhead copy of each of the handouts. Every year, earthquakes cause death and destruction worldwide. triangulation: A method to determine exactly where an earthquake originates. Earthquakes and Seismic Waves - carlisleschools.org To complete the activity, some prior . If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Thanks for your feedback! S-P interval: The time interval between the arrivals of P and S waves. Lab Activity Locating Epicenters Flashcards | Quizlet Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . Section 8.1 What Is an Earthquake? determine the epicenter using the S P (S minus P) method. 3000 miles. 0000001143 00000 n
Thus technology use varies from region to region and over time. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. !5(~q* Solved Lab Exercise #2: Locating the Epicenter of an - Chegg I contacted the persons listed below to find out the location of the following people entitled to notice Name of Person Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . The point beneath Earth's surface where rock breaks under stress and causes an earthquake. Focal Depth. [N'. Upload a document. See Answer. If the lag time were measured at a location closer to the epicenter, how would it compare It takes S waves 14. Now on the main page of the Earthquakes Living Lab website (see Figure 2), note the featuring of four active seismic areas and the mapping of real-time and current data from earthquakes happening around the world. Richter scale Method of earthquake measurement based on the amplitude of seismic . (Grades
Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. As the drum rotated, the Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, 0000001893 00000 n
farther from the epicenter of an earthquake? Activity 4 locating an earthquake epicenter answers: Fill out & sign Locating An Earthquake Epicenter Lab Answer Key Alignment agreement:
An earthquake is the violent movement of tectonic plates in the Earth's crust. Material is sheared side to side, perpendicular to the direction of wave propagation. 0000002383 00000 n
3. technology, engineering or math (STEM) educational standards. 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. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) 0 500 1000 1500 2000 2500 3000 Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. Lab Activity Locating Epicenters Teaching Resources | TPT Pwaves have the greatest velocity and reach theseismic station first. Civilization and its Discontents (Sigmund Freud), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Psychology (David G. Myers; C. Nathan DeWall), The Methodology of the Social Sciences (Max Weber), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. %PDF-1.5
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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. 87 0 obj
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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. The simulation renders three circles on a map and directs students to find the epicenter. '
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The farther a station is from the 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. The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. 0000078100 00000 n
The travel-time graph (Grades
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Figure 8. 9 -
Point on Earth's surface directly above an earthquake's focus. Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. Solved ACTIVITY 2B Locating an Earthquake Figure 5 shows - Chegg question 1 of 3. 5. focus - the point within Earth where an earthquake originates. 1. HtA1D41`s(GME$Ke*YdEOYf2-:r. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. 0000003966 00000 n
HS]o01j6R0iMm4U=wL8]BE< Make arrangements so that each student group has a computer with Internet access. What data is used to determine magnitude? 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. 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. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc different types of seismic waves. The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D Earthquake Worksheet Answers Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. longer or shorter). Run through the investigation yourself and record the data, just to see how long it takes.