activity 4 locating an earthquake epicenter answer key

Scientists use triangulation to find the epicenter of an earthquake. 01. Also called seismometer. This investigation is considered generally safe to do with students. 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. Have students turn in their answers for the Explain portion of the worksheet. 0000000856 00000 n 0000004769 00000 n longer or shorter). Practice with Triangulation: Locating an earthquake epicenter. How does distance from the epicenter affect the S-P time interval? (Grades 9 - 12). Show students some of the numerous online animations comparing the movements of P and S waves. 2. 0000001736 00000 n The hypocenter is the point within the earth where an earthquake rupture starts. 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. 87 0 obj <> endobj xref 87 28 0000000016 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. 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. pen recorded the arrival of P, S, and surface Last updated November 26, 2013. What types of engineers might use this data the most? 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . 0000001893 00000 n Use this information to complete the following. 4. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q The instrument detects and documents the intensity, direction and duration of ground vibrations, which are used to determine the epicenters and strength/magnitudes of earthquakes or other seismic events. P wave: The first seismic wave of an earthquake. Expert Answer. Add to Library. One seismogram indicates the distance to the epicenter. 1. Earthquakes and Seismic Waves Key Concepts . 12), Seek, evaluate, and use a variety of specialized resources available from libraries, the Internet, and the community to find scientific information on Earth's history 3. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. between arrival of P and S waves is called 500p;333aXb3 \a.1. How does the Mad Scientist. earthquake - shaking and vibration of Earth's surface. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. Review their answers to assess their base knowledge of the subject matter. hbbd``b`$C`q9 X_$_g`bdxc`X 0000001777 00000 n What is an earthquake? An earthquake is the violent movement of tectonic plates in the Earth's crust. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). Must engineers be content with mitigating disasters, instead of preventing them? Pwaves have the greatest velocity and reach theseismic station first. The distance is in kilometers. The longer the time is between the P-and S-wave . Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. lag time. The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. The answer is the San Andreas Fault. earthquake lab lab: locating the epicenters of earthquakes objective measurable learning outcomes use data from seismograms to locate the epicenters of Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew My Library Discovery Institutions Western Governors University Southern New Hampshire University Virtual Earthquake (tutorial/simulation) 1996. Student exploration Graphing Skills SE Key Gizmos Explore Learning. (from left to right). Make changes to the sample. 0000001396 00000 n In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. 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! Learn more How Can I Locate the Earthquake Epicenter? Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. Thanks for your feedback! The earthquake occurred somewhere along that circle. 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. to the lag time measured at this location? 0000001675 00000 n "`B(R6sj [CX7p+s =#;~ `'kA Do limits exist on what science can predict? Edit your locating an earthquake epicenter worksheet answers online. U.S. Geological Survey, U.S. Department of the Interior. 3000 miles. 0000055643 00000 n 0000001746 00000 n Three seismographs are needed. Do you agree with this alignment? 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, amount of time that passes between the Pwave arrival and the Swave arrival is. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C (Source: USGS, Wikipedia). You can also download it, export it or print it out. See Answer. How does the period of the P waves compare to the period of the surface waves? Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. m>r/Q[6 0 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. Richter scale Method of earthquake measurement based on the amplitude of seismic . minute apart, represent the passage of time Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. 0000031066 00000 n determine the epicenter using the S P (S minus P) method. 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. E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! 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. aqmd. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 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." 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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. directly above it on the surface of the earth is called the epicenter. You will analyze the records and locate the earthquake using a method known Finding the Epicenter Determine the epicenter distance from three different seismographs. While earthquake locations are normally done with a computer that can quickly determine the paths of seismic waves through the Earth to many seismic stations, 15 Introduction to Geology Chapter Worksheet . earthquake. Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. 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(5 minutes) Discuss how gathering information on epicenters can be applied. Earthquakes and Volcanoes. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. 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. 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. (Grades To accurately locate an earthquake epicenter, records from three. How many minutes elapsed between the arrival of the first P wave and the last measurable Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. 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. Describe the process of triangulation to locate an epicenter. Wikipedia, The Free Encyclopedia. moment magnitude scale: Similar to the Richter scale, but replacing its use starting in the 1970s for more accuracy in measuring big earthquakes (magnitudes > 3.5) from greater distances. Draw your signature, type it, upload its image, or use your mobile device as a signature pad. Seismic Waves. This is determined by the P-and S-wave arrival times. You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. Dochub is the best editor for changing your documents online. distance from transducer to the focal point. 0000007783 00000 n Read through the sections What Is Seismology and What Are Seismic Waves?, Where Do Earthquakes Happen?, and Why Do Earthquakes Happen? to answer the following questions: What is the difference between S and P waves? Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. 0000006538 00000 n Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. The seismometers are shown as green dots. minutes and P waves 8 minutes to Resources. Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. What are those limits? The real-world earthquake data is viewable via a graphical interface using a scaling map. We additionally manage to pay for . https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 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. 1,000 miles from the epicenter of an earthquake? Objective Use data from seismograms to locate the epicenters of earthquakes. What data is used to determine magnitude? locate and label the epicenter of the earthquake on this map. 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. 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. 0000004511 00000 n Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. Figure 2 is a seismic wave travel-time (i. Add to FlexBook Textbook. question 1 of 3. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) 0000002840 00000 n triangulation: A method to determine exactly where an earthquake originates. 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. trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream consider a seismograph stationed 3, In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. Moment magnitude scale. 2. Zip. What was the lag time (in minutes) at this location? and S waves to travel any distance up to 1. What is the time lag for the Seattle, Washington, seismic station? 0000030504 00000 n 12), Evaluate ways that technology can impact individuals, society, and the environment. Pwaves have the greatest velocity and reach the, seismic station first. Assess their understanding based on the thoroughness of their answers. They make a model of a seismographa measuring device that records an earthquake on a seismogram. a project of D2L (www.achievementstandards.org). Section 8.1 What Is an Earthquake? trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. earthquake though). A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D 107 0 obj <>stream %PDF-1.3 % 0 500 1000 1500 2000 2500 3000 61 33 minutes? !5(~q* We have answers to the most popular questions from our customers. S-P interval: The time interval between the arrivals of P and S waves. A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. Describe the logarithmic nature of the earthquake magnitude scale. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. 0000005544 00000 n Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. Y$Kr;V6[;Dq vg~cx:A[^jCssupwD endstream endobj 80 0 obj <> endobj 81 0 obj <>stream