0000009174 00000 n 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. The earthquake occurred somewhere along that circle. 1,000 miles from the epicenter of an earthquake? (Figure 3):. Learn more How Can I Locate the Earthquake Epicenter? How does distance from the epicenter affect the magnitude (height) of the seismograph reading? However, please review it for the specific setting, materials, students, and conventional safety precautions. Before looking at the Earthquakes Living Lab, have pairs complete the, Then guide the teams to the Earthquakes Living Lab via the living lab website at. 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. Short for "primary wave" or "pressure wave." Epicenter Location on Earth's surface directly above the focus of the earthquake 5. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. minutes = 6 minutes. We additionally manage to pay for . Practice with Triangulation: Locating an earthquake epicenter. What types of engineers might use this data the most? 61 0 obj <> endobj xref Earthquakes and Seismic Waves Key Concepts . 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Focal Depth. (i. Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. pen recorded the arrival of P, S, and surface Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! The magnitude is the logarithm of the amplitude of the ground wave. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows seismograms for the same earthquake recorded at three locations - New York, Nome, Alaska, and Mexico City. 0000007783 00000 n As the drum rotated, t, pen recorded the arrival of P, S, and surface, between arrival of P and S waves is called, epicenter, the longer the lag time measured, velocity, amplitude, and frequency of the. While earthquake locations are normally done with a computer that can quickly determine the paths of seismic waves through the Earth to many seismic stations, 15 Introduction to Geology Chapter Worksheet . Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). I contacted the persons listed below to find out the location of the following people entitled to notice Name of Person Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. Review their answers to assess their base knowledge of the subject matter. travel 3,000 miles. Earthquake Location 2 Using the skills that you acquired in the picking P and S arrivals, you can now locate an earthquake using real seismic records. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK X!.43p2t!}SLx-3z.KN4X+H\+vk? Also commonly termed the focus. The epicenter is the point directly above it at the surface of the Earth. Reading Strategy. Details. Therefore, the lag Assess their understanding based on the thoroughness of their answers. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. Some places are more prone to earthquakes than others. 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. a project of D2L (www.achievementstandards.org). Figure 13.10). Civil engineers, who design houses, apartment buildings, schools, skyscrapers, bridges, highways, tunnels, water treatment facilities, factories and other structures, may use this data to help them create safer structures that are less likely to sustain damage during earthquakes. 0000005081 00000 n Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. First locate and mark the three seismic stations on the world map provided below. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. As you may know, people have look numerous times for . Resources. EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. : an American History (Eric Foner), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), How many minutes elapsed between the arrival of the first P wave and. Figure 1 is a simplified example of a Thus technology use varies from region to region and over time. 0000030504 00000 n 0000010002 00000 n Describe the logarithmic nature of the earthquake magnitude scale. hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! travel time for P waves. 0000001861 00000 n 01. Was there an initial quake followed by smaller quakes? 9 - Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. What data is used to determine magnitude? Earthquakes & Volcanoes Test Review Answers. 0000001736 00000 n Every earthquake is recorded on numerous seismographs located in different directions. 12), Analyze and interpret data about natural hazards using direct and indirect evidence *The NGSS logo is a registered trademark of WestEd. 0000001777 00000 n %PDF-1.3 % 0000002383 00000 n Make arrangements so that each student group has a computer with Internet access. 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. When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. (Source: USGS). Pwaves have the greatest velocity and reach theseismic station first. n{6c&6NK*U;=9i%nF technology, engineering or math (STEM) educational standards. (Grades important in helping seismologists determine the epicenter of the earthquake. Swaves arrive at the seismic station after the Pwaves. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. To complete the activity, some prior . What is an earthquake? 13 4 locating an earthquake epicenter geosciences libretexts . Record your answer from Lab Exercise #2, Step 1. consider a seismograph stationed 3, gov For online instructions and current fees click here. In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; A circle with a radius of the distance to the quake can be drawn. Triangulation is required to determine exactly where it happened. Finding the epicenter worksheet answer key. [*aiLG?+J\QI86~}ooRrr!pm}dk@dBbZPMZlC4C\9^ SM.R\!H+$|+DUzt^w{" %&{KXjT'9yzT^UFe:+f(`PU_9%EW@\)?i qp!\G Z endstream endobj 75 0 obj <>stream 0000003855 00000 n HTn0MmcHCB Practicing this technique, the students work several problems on a map of the US. Figure 2 is a seismic wave travel-time 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. 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. Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. 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. Edit your locating an earthquake epicenter worksheet answers online. 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. velocity, amplitude, and frequency of the This is determined by the P-and S-wave arrival times. 0000005149 00000 n d>(ZvO= Seismograms When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. 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. (Grades 9 - 12). cCV&0Lw1~c\4QA!{q: N3\`Lccgb,x/if`WH3(\'q)Da'@ | endstream endobj 92 0 obj <>/Filter/FlateDecode/Index[57 4]/Length 20/Size 61/Type/XRef/W[1 1 1]>>stream (Grades %PDF-1.4 % 87 0 obj <> endobj xref 87 28 0000000016 00000 n Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. It takes S waves 14. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 0000000956 00000 n =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q 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. All 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. triangulation: A method to determine exactly where an earthquake originates. 0000004769 00000 n In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. within type by subtype, then by grade, etc. distance from transducer to the focal point. Use this information to complete the following. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) "`B(R6sj [CX7p+s =#;~ `'kA Thanks for your feedback! Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. located 1,000 miles from the 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. 0000030968 00000 n Zip. activity illustrates how the epicenter of an earthquake is found. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. As the drum rotated, the For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. Upload a document. %%EOF 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. Must engineers be content with mitigating disasters, instead of preventing them? Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. 0000003991 00000 n Draw your signature, type it, upload its image, or use your mobile device as a signature pad. Student exploration Graphing Skills SE Key Gizmos Explore Learning. 0000001408 00000 n For this activity, select the "Chile" box. Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. H\0y HTAn To make a magnitude determination, two measurements are needed: the S-P interval (already determined earlier in the tutorial) and the maximum amplitude of the seismic waves.