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Locating Earthquake Epicenter Worksheet Answer Key 0000006538 00000 n
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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. 0000006984 00000 n
Do you think we will someday be able to prevent earthquakes? 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. hb```b````e``n`d@ A
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vILZ*|%6mD! When the tension becomes too great, the fault slips, causing an earthquake. What data is used to determine magnitude? Swaves arrive at the seismic station after the Pwaves.
Lab Activity Locating Epicenters Teaching Resources | TPT 12), computer or other device with Internet access, journal or writing paper for each student. For example, 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. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. Seismic stations detect earthquakes by the tracings made on seismographs. As discussed earlier in this lesson, this method of determining the epicenter of an . (Grades
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. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. Do you agree with this alignment? This section explains what earthquakes and faults are and what causes earthquakes. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. Tips: Make sure students are reading the S waves and not the P waves. %%EOF
Why might the triangulation method not always produce an exact point (other than your measurement errors)? Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. time for any point that is 3,000 miles
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PDF Lecture 3 Activity: Locating an Earthquake Epicenter You will receive your score and answers at the end. question 1 of 3.
A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D Focus. This is determined by the P-and S-wave arrival times. 0000055643 00000 n
If the lag time were measured at a location closer to the epicenter, how would it compare What is the long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? 0000001675 00000 n
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If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. 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.
Locating An Earthquake Epicenter Lab Answer Key consider a seismograph stationed 3, (from left to right). The vertical lines, spaced one 0000004769 00000 n
There are two sets of data and maps to do this activity/ lab for than once. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. 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. determine the epicenter using the S P (S minus P) method. The magnitude determination is based on seismic data. hbbd``b`$C`q9 X_$_g`bdxc`X A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. 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. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif 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. different types of seismic waves. 0000005081 00000 n
Locating Earthquake Epicenter Lab Answer Key buysms de. 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. The farther away the epicenter is, the greater the difference . Short for "primary wave" or "pressure wave." gov For online instructions and current fees click here. Richter scale Method of earthquake measurement based on the amplitude of seismic . The earthquake occurred somewhere along that circle. These natural disasters may be mitigated, however, by insightful and creative engineering. minutes? 0000001408 00000 n
You will analyze the records and locate the earthquake using a method known If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". Do you agree with this alignment? 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? Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. 0000001396 00000 n
Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. It is slower than the same earthquake's P wave and cannot travel through liquids. Add to Library.
Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. 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. Section 8.1 What Is an Earthquake? 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. HTn0MmcHCB Practicing this technique, the students work several problems on a map of the US. For this activity, select the "Chile" box. Pwaves have the greatest velocity and reach theseismic station first.
Locating Earthquake Epicenters ( Read ) | Earth Science Locating_an_epicenter_activity - Activity4 - Course Hero HlRnQ?R\>BjK' 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. Scientists use triangulation to find the epicenter of an earthquake. If you can't find an answer to your question, please contact us.
It shows the time required for P Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) Earthquakes occur along faults, which are cracks in the Earths crust that build tension. approximate period of the surface waves in seconds?
How Can I Locate the Earthquake Epicenter? | Michigan Technological After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science,
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. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! 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. 0000002507 00000 n
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The point beneath Earth's surface where rock breaks under stress and causes an earthquake. 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. [N'.
Activity 4 locating an earthquake epicenter answers: Fill out & sign PDF Finding Epicenters and Measuring Magnitudes Worksheet Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. 92 0 obj
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Use the process of triangulation to locate an earthquake's epicenter. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. 0000004457 00000 n
PDF Locating an Epicenter Activity - Arkansas Geological Survey 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. Dochub is the best editor for changing your documents online. 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. The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. Earthquakes and Seismic Waves Key Concepts . The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. m>r/Q[6 0000002094 00000 n
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Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, (Listen to student ideas.)
Free K-12 standards-aligned STEM curriculum for educators everywhere. 0000053998 00000 n
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Triangulation is required to determine exactly where it happened. 1,000 miles from the epicenter of an earthquake? During an earthquake, seismic waves are sent all over the globe.
Locating an Earthquake's Epicenter - American Geosciences Institute P wave. 0000001736 00000 n
Have students turn in their answers for the Explain portion of the worksheet. Three seismographs are needed. 0000106240 00000 n
Direct students to finish the activity by completing the. P and S arrivals, you can now locate an earthquake your answers below. What are those limits? The time Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. directly above it on the surface of the earth is called the epicenter. Describe the logarithmic nature of the earthquake magnitude scale. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . Student exploration Graphing Skills SE Key Gizmos Explore Learning. 13. HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N
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1. (Figure 3):. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. 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. What about P waves? How does distance from the epicenter affect the S-P time interval? Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. 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. Find 23 millimeters on the right side of the chart and mark that point. (5 minutes) Discuss how gathering information on epicenters can be applied. 5. focus - the point within Earth where an earthquake originates. How is the magnitude of an earthquake determined? Every year, earthquakes cause death and destruction worldwide. Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. Some places are more prone to earthquakes than others.