activity 4 locating an earthquake epicenter answer keyactivity 4 locating an earthquake epicenter answer key
They use three seismographs in a process called triangulation to determine earthquake epicenters. Locating an Earthquake's Epicenter - American Geosciences Institute How Can I Locate the Earthquake Epicenter? | Michigan Technological Figure 1 is a simplified example of a What are those limits? 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Using this resource students find the arrival times of P-waves and S-waves using a seismogram. 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. 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. 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. 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. 0000002094 00000 n 0000005081 00000 n 5. focus - the point within Earth where an earthquake originates. For example, Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. gov For online instructions and current fees click here. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. DocHub v5.1.1 Released! at that station. 0000002383 00000 n Locating An Earthquake Epicenter Lab Answer Key Use the graph to answer the questions that follow. 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. P wave: The first seismic wave of an earthquake. 0000078100 00000 n Step 1: ans- d) 65 seconds Ste . seismogram. Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. 13 4 locating an earthquake epicenter geosciences libretexts . So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. between arrival of P and S waves is called 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. What data is used to determine magnitude? This is determined by the P-and S-wave arrival times. The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. Ask students what fault they think caused this earthquake. 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. To do this, have the students use, Find the epicenter of the earthquake on the map (. 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. 0000001893 00000 n locate and label the epicenter of the earthquake on this map. Seismograms PDF Finding Epicenters Lab Answer Key Lab Pdf from the epicenter will be 14 8. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. inch = 500 km. Where the 3 circles intersect is the approximate location to the epicenter of the earthquake. 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. activity illustrates how the epicenter of an earthquake is found. Make changes to the sample. Earthquake Worksheet Answers 0000078169 00000 n Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. minutes? 107 0 obj <>stream 61 33 distance from transducer to the focal point. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. The distance is in kilometers. 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. Key Facts & Information. Objective Use data from seismograms to locate the epicenters of 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. Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. Thanks for your feedback! First locate and mark the three seismic stations on the world map provided below. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). Material is sheared side to side, perpendicular to the direction of wave propagation. The time The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. The travel-time graph Click for facts and worksheets in PDF! As the drum rotated, the U.S. Geological Survey, U.S. Department of the Interior. To complete the activity, some prior . 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Lab Activity Locating Epicenters Teaching Resources | TPT 0000001736 00000 n (Grades 6 - 8). Mr Gneiss. technology, engineering or math (STEM) educational standards. What data is used to determine magnitude? The earthquake occurred somewhere along that circle. S waves. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Alignment agreement: 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. Epicenter Location on Earth's surface directly above the focus of the earthquake 5. 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. 5 4. PDF. [N'. 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. 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. lag time. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. different types of seismic waves. Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. During an earthquake, seismic waves are sent all over the globe. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. 0000001396 00000 n seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. Q(_?!6YV3B"\'9:4gTp*7^/P.X!skfkJ)1nG#a\{UD+iWM+ rQR]9SFTUPlM#"c:;tnsQPlu]Uyv?Ge}W;8cMA/x}'5clES~+}S+N7}wQ:/BkmI^" 5oqaBC[TRjq4.e}F:SQg{=u\xcg~EaZKReoC?oahJ` 'w endstream endobj 77 0 obj <>stream 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. Review their answers to assess their base knowledge of the subject matter. The process is called triangulation. Show students some of the numerous online animations comparing the movements of P and S waves. 9 - Do limits exist on what science can predict? 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?" 4. 0000001978 00000 n 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. Assess their understanding based on the thoroughness of their answers. How does distance from the epicenter affect the magnitude (height) of the seismograph reading? Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . 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. Many updates and improvements! Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an Draw your signature, type it, upload its image, or use your mobile device as a signature pad. How does the period of the P waves compare to the period of the surface waves? Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. 0000030240 00000 n !5(~q* 0000001408 00000 n earthquake. Figure 2 is a seismic wave travel-time Add to Library. Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 0000008088 00000 n Direct students to finish the activity by completing the. 0000010002 00000 n HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N Z./$E )H %C[5ph[BUyGh7|!XPQiDjJ(|BNvylk+g;9G(#Aby>Jcf`XmnwtDD+;Z^I&Sb-4!7oi` L7 endstream endobj 78 0 obj <> endobj 79 0 obj <>stream Earthquakes & Volcanoes Test Review Answers. 2. However, please review it for the specific setting, materials, students, and conventional safety precautions. All rights reserved. H\0y One seismogram indicates the distance to the epicenter. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . What is an earthquake? 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. Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. 0000033429 00000 n Millions of people witnessed the motion of the earthquake on television. m>r/Q[6 Upload a document. Practicing this technique, the students work several problems on a map of the US. At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. Dochub is the best editor for changing your documents online. The simulation renders three circles on a map and directs students to find the epicenter. Richter scale Method of earthquake measurement based on the amplitude of seismic . 0000006011 00000 n 6. An earthquake is the violent movement of tectonic plates in the Earth's crust. What was the lag time (in minutes) at this location? Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. 0000001861 00000 n 0000001675 00000 n locating the epicenter of an earthquake activity - TeachersPayTeachers Zip. What types of engineers might use this data the most? 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. earthquake though). As you read and complete the activity, take notes so you can complete the. Last updated November 26, 2013. 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This section explains what earthquakes and faults are and what causes earthquakes. 0000115324 00000 n graph. (Grades 9 - 12). (Source: USGS, Wikipedia). After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, How far do S waves travel in 5 12), Analyze and interpret data about natural hazards using direct and indirect evidence Do you agree with this alignment? 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. The, amount of time that passes between the Pwave arrival and the Swave arrival is. 0000005149 00000 n %PDF-1.5 % 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).
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