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. Pwaves have the greatest velocity and reach theseismic station first. Choose an answer and hit 'next'. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. Based on your answers to the previous question, what is the lag time for locations that are hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) A circle with a radius of the distance to the quake can be drawn. 9 - 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . Have students turn in their answers for the Explain portion of the worksheet. 9 - If you can't find an answer to your question, please contact us. 0000002507 00000 n Focal Depth. 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. (, Find the S-P interval for each seismogram and record answers in the S-P column of, Find the distance to the epicenter (in kilometers) from each recording station and record answers in Table 1. Focus. For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. Use the process of triangulation to locate an earthquake's epicenter. 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. Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. Epicenter is the location on the surface of the Earth directly above where the earthquake starts. travel time for P waves. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. Question: ACTIVITY 2B Locating an Earthquake Figure 5 shows seismograms for the same earthquake recorded at three locations-New York; Nome, Alaska; and Mexico City. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. Figure 13.10). It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. Please answer the following questions using the earthquake video - shake, shake, shake. P and S arrivals, you can now locate an earthquake your answers below. Notify the classroom teacher of technology needs (overhead projector). earthquakes. 0000002840 00000 n 12), computer or other device with Internet access, journal or writing paper for each student. Do limits exist on what science can predict? 0000031066 00000 n 12), Analyze and interpret data about natural hazards using direct and indirect evidence Mapping the history of natural hazards in a region, combined with an understanding of related geologic forces can help forecast the locations and likelihoods of future events. Review their answers to assess their base knowledge of the subject matter. HTAn To complete the activity, some prior . from the epicenter will be 14 8. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). U.S. Geological Survey, U.S. Department of the Interior. Click for facts and worksheets in PDF! Also commonly termed the focus. use slide 6 and answer key slide 7 how can i locate the earthquake epicenter michigan web the epicenter of the earthquake is somewhere on the edge of that circle do the seismogram. Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. What is the time lag for the Seattle, Washington, seismic station? Do you agree with this alignment? triangulation: A method to determine exactly where an earthquake originates. The calculated distance from each seismometer to the earthquake is shown as a circle. 9 - It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. Figure 1 is a simplified example of a trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. trailer <<320C1F98F8FF4795B5CCB8D9E9A0B99B>]/Prev 812054/XRefStm 1396>> startxref 0 %%EOF 93 0 obj <>stream long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? Locating an Epicenter Activity - Arkansas Geological Survey 0000030504 00000 n Every year, earthquakes cause death and destruction worldwide. 0000003254 00000 n Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. Thanks for your feedback! Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. Run through the investigation yourself and record the data, just to see how long it takes. If you draw a circle on a map around three different seismographs where the radius of each is the distance from that station to the earthquake, the intersection of those three circles is the epicenter. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. PDF. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. Do you agree with this alignment? 0000004224 00000 n 0000004060 00000 n The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more 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. Earthquakes & Volcanoes Test Review Answers. 0000008845 00000 n !5(~q* Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. 0000001562 00000 n For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. Use this information to complete the following. Share with Classes. Assess their understanding based on the thoroughness of their answers. After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, surface wave? 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. Describe the process of triangulation to locate an epicenter. 0000115324 00000 n 87 0 obj <> endobj xref 87 28 0000000016 00000 n 0000002009 00000 n See Answer. 0000000016 00000 n 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. miles from the epicenter of an 17 Station St., Ste 3 Brookline, MA 02445. Adjust the timing to the class period, remembering that you will need time to introduce the investigation, clean up afterwards, and re-set up for the next class (if you are working with more than one class). 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? 0000002658 00000 n inch = 500 km. !D,X2:azTG)kPT~Mj 4>d w@O'. Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. 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. P wave: The first seismic wave of an earthquake. Success is figuring out that the estimated magnitude is 5.9. Wikipedia, The Free Encyclopedia. Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. 1) Identify the general term for waves released from an earthquake. 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. Also called seismometer. 500p;333aXb3 \a.1. 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. lag time. 0000007783 00000 n (Grades 0000003966 00000 n Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc 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. The farther away the epicenter is, the greater the difference . This investigation is considered generally safe to do with students. Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. Seismic stations detect earthquakes by the tracings made on seismographs. As you read and complete the activity, take notes so you can complete the. The farther a station is from the 0000001408 00000 n hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! What did it feel like? The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. [N'. 0000001604 00000 n As you may know, people have look numerous times for . minutes = 6 minutes. The process is called triangulation. Upload a document. 0000098546 00000 n Use the graph to answer the questions that follow. It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? 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. Cross), Give Me Liberty! The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. waves from a distant earthquake. 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. 0000001736 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave . Therefore, the lag 0 500 1000 1500 2000 2500 3000 Make an overhead copy of each of the handouts. EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. 0000001861 00000 n earthquake. epicenter, the longer the lag time measured longer or shorter). *The NGSS logo is a registered trademark of WestEd. In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; minute apart, represent the passage of time Shear wave from earthquake, moving slower than primary waves, through solid material only. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Reading Strategy. and S waves depends on the distance from the epicenter of the answer the following question. : 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. How does the Mad Scientist. What was the lag time (in minutes) at this location? xb``d``Id`a`Ab@_ :iWGi>|q` One seismogram indicates the distance to the epicenter. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. El trmino tambin puede hacer referencia al ttulo o nombre de alguien a quien se di, Practica II - De Psicologian 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. BDF endstream endobj 74 0 obj <>stream In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. 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 spot where those three circles intersect is the epicenter (Figure 13.12). The vertical lines, spaced one 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. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. 0000004769 00000 n Section A - Operator Information 1. endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream hbbd``b`$C`q9 X_$_g`bdxc`X Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. 0000004511 00000 n 0000078100 00000 n Do you think we will someday be able to prevent earthquakes? 1. Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory Specifically, seismographs make recordings (seismograms) of the seismic waves generated from earthquakes, providing engineers and other researchers with data that they use to make predictions about future earthquakes. How might they use this information? Several thousand seismographs exist at locations around the planet, continuously measuring abnormalities in the Earth's movement. 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. Nov 2, 2020 Triangulation is used to determine the location of an earthquake. Must engineers be content with mitigating disasters, instead of preventing them? The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! Zip. The earthquake occurred somewhere along that circle. Some places are more prone to earthquakes than others. (Listen to student ideas.) Doing this generates an S-P interval graph (time vs. distance, called the travel-time curve graph) from which they determine and select three epicentral distances. "`B(R6sj [CX7p+s =#;~ `'kA What is the Draw your signature, type it, upload its image, or use your mobile device as a signature pad. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. 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. ?t?s=Yt '_( endstream endobj 76 0 obj <>stream How does distance from the epicenter affect the S-P time interval? 0000007097 00000 n 0000003855 00000 n Send activity 4 locating an earthquake epicenter worksheet answers via email, link, or fax. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. 0000033429 00000 n Many updates and improvements! To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. 0000000856 00000 n When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. Sixty-seven people lost their lives, and property damage was estimated at $6 billion. As discussed earlier in this lesson, this method of determining the epicenter of an . Earthquakes and Volcanoes. (Grades Apr 8, 2020 One seismogram indicates the distance to the epicenter. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. Short for "primary wave" or "pressure wave." (Grades 9 - 12). https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . The time Practice with Triangulation: Locating an earthquake epicenter.
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