activity 4 locating an earthquake epicenter answer key

pen recorded the arrival of P, S, and surface Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. 0000007783 00000 n HtA1D41`s(GME$Ke*YdEOYf2-:r. (, Have any of you ever experienced an earthquake or know anyone who has? It is slower than the same earthquake's P wave and cannot travel through liquids. The moment magnitude scale (MMS) was developed in the 1970s as a modification of the Richter scale and is better for measuring big earthquakes but less good for small ones. Finding the Epicenter Determine the epicenter distance from three different seismographs. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. 12 Earthquake Location Lab Answer Key Full PDF - www.yvc.moeys.gov Locating Earthquake Epicenters ( Read ) | Earth Science Choose an answer and hit 'next'. 0000002094 00000 n Thanks for your feedback! Locating An Earthquake Epicenter Lab Answer Key We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Success is figuring out that the estimated magnitude is 5.9. 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. 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. Draw your signature, type it, upload its image, or use your mobile device as a signature pad. 0000000856 00000 n First locate and mark the three seismic stations on the world map provided below. (Grades This worksheet focuses on using the p and s graph to find different variables. Some places are more prone to earthquakes than others. There are two sets of data and maps to do this activity/ lab for than once. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 0000002250 00000 n 01. Practice with Triangulation: Locating an earthquake epicenter. 0000006538 00000 n Geologists use seismic waves to locate an earthquake's epicenter. Direct students to finish the activity by completing the. [N'. 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) . Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. Alignment agreement: earthquake though). 12), computer or other device with Internet access, journal or writing paper for each student. 0000001143 00000 n ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows - Chegg When the tension becomes too great, the fault slips, causing an earthquake. Type text, add images, blackout confidential details, add comments, highlights and more. Copyright 2023. 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. Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. 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. 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. 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. Millions of people witnessed the motion of the earthquake on television. 0000002840 00000 n When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. 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. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. The hypocenter is the point within the earth where an earthquake rupture starts. Richter scale Method of earthquake measurement based on the amplitude of seismic . 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 technology, engineering or math (STEM) educational standards. For this activity, select the "Chile" box. Note the differences in a project of D2L (www.achievementstandards.org). 1. What is an earthquake? 0000098546 00000 n Was there an initial quake followed by smaller quakes? It takes S waves 14. waves from a distant earthquake. 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 Last updated November 26, 2013. 0000001604 00000 n 5. focus - the point within Earth where an earthquake originates. Make an overhead copy of each of the handouts. PS: We do not share personal information or emails with anyone. 0000004769 00000 n Practicing this technique, the students work several problems on a map of the US. Record your answer from Lab Exercise #2, Step 1. This is determined by the P-and S-wave arrival times. 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. The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. Add to Library. If your seismograph station is Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. Apr 8, 2020 One seismogram indicates the distance to the epicenter. Wikipedia, The Free Encyclopedia. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. 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). Mark the first arrival of the swave on each seismogram. lag time. from the epicenter will be 14 8. 87 0 obj <> endobj xref 87 28 0000000016 00000 n Solved ACTIVITY 2B Locating an Earthquake Figure 5 shows - Chegg The answer is the San Andreas Fault. minute apart, represent the passage of time 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. hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? 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. DOC Home - Westerville City Schools Step 1: ans- d) 65 seconds Ste . 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. U.S. Geological Survey, U.S. Department of the Interior. See Answer. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. Ask students what fault they think caused this earthquake. Hands-on Activity Earthquakes Living Lab: Finding Epicenters 3000 miles. In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. 0000001736 00000 n All rights reserved. Seismograms /g$=#!$EbBbhD!,x so^6Uc})\uJs=fyY}j'|YjTm8B_[}*Ovm\[J'.mu?lQg,wzJM^X&P w>-T%*h%J4 yB@VPmP]@D------------,2dfY$"A!ANAASi)4$dniiiinH% Gxt5DJ) )9RRr$II'y ??O's^3@[{*{VT?nsNS!ilq]mFO?? 0000001746 00000 n 0000007097 00000 n 0000002383 00000 n 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. In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; earthquakes. Hand out the worksheets to the groups and direct them to read through the instructions. Great exercise for Regents Earth Science. 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. What types of engineers might use this data the most? Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. earthquake - shaking and vibration of Earth's surface. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. 0000079769 00000 n and S waves to travel any distance up to Why might the triangulation method not always produce an exact point (other than your measurement errors)? Pwaves have the greatest velocity and reach theseismic station first. 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. 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. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. Locating an Earthquake's Epicenter - American Geosciences Institute directly above it on the surface of the earth is called the epicenter. Student exploration Graphing Skills SE Key Gizmos Explore Learning. Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. These natural disasters may be mitigated, however, by insightful and creative engineering. Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) 0000030504 00000 n 2. Click for facts and worksheets in PDF! If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. activity illustrates how the epicenter of an earthquake is found. Earthquakes & Volcanoes Test Review Answers. 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. Place a ruler (or straight edge) on the chart between the points you marked for the distance to the epicenter and the amplitude. 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PDF Finding Epicenters and Measuring Magnitudes Worksheet The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. Scientists use triangulation to find the epicenter of an earthquake. 1) Identify the general term for waves released from an earthquake. 0000002658 00000 n Figure 8. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. 0000010002 00000 n 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. Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect.

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