The epicenter is the point directly above it at the surface of the Earth. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. H\0y HlRnQ?R\>BjK' 0000002250 00000 n
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Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. Using the real-world data in the living lab enables students and teachers to practice analyzing data to solve problems and answer questions, in much the same way that scientists and engineers do every day. It shows the time required for P 0000003991 00000 n
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seismogram. What was the lag time (in minutes) at this location? The, amount of time that passes between the Pwave arrival and the Swave arrival is. 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They make a model of a seismographa measuring device that records an earthquake on a seismogram. Next, have student groups answer the eight questions in the. Also commonly termed the focus. 0000031066 00000 n
hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0
Md|d&:zhe)7I? Swaves arrive at the seismic station after the Pwaves. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q I also will take them through the general process of how find the difference in arrival times of p- and s-waves can be used to find a distance to an earthquake and how using data from 3 seismograph stations is used to locate the epicenter. Practice with Triangulation: Locating an earthquake epicenter. Was there an initial quake followed by smaller quakes? Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. The calculated distance from each seismometer to the earthquake is shown as a circle. 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. Add to Library. See Answer. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . 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 real-world earthquake data is viewable via a graphical interface using a scaling map. The longer the time is between the P-and S-wave . pen recorded the arrival of P, S, and surface
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. Reading Strategy. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif 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. 0000008088 00000 n
The point beneath Earth's surface where rock breaks under stress and causes an earthquake. Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. 0000007783 00000 n
When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. How can you locate an earthquake's epicenter? [N'. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. Locating Earthquake Epicenter Lab Answer Key buysms de. Success is figuring out that the estimated magnitude is 5.9. If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". distance = travel time for S waves Upload a document. When the tension becomes too great, the fault slips, causing an earthquake. Develop a solution to a technological problem that has the least negative environmental and social impact. Must engineers be content with mitigating disasters, instead of preventing them? 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. 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. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. 0000001978 00000 n
The earthquake occurred somewhere along that circle. This activity is designed around the Earthquakes Living Lab, a resource and online interface that uses real-time U.S. Geological Survey seismic data from around the world. Send activity 4 locating an earthquake epicenter worksheet answers via email, link, or fax. PS: We do not share personal information or emails with anyone. Material is sheared side to side, perpendicular to the direction of wave propagation. Notify the classroom teacher of technology needs (overhead projector). 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. earthquakes. Type text, add images, blackout confidential details, add comments, highlights and more. d>(ZvO= In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 0000103591 00000 n
Describe the process of triangulation to locate an epicenter. between arrival of P and S waves is called Section A - Operator Information 1. 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. by. lag time. %%EOF
How do we determine the epicenter of an earthquake? 0000002658 00000 n
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? (5 minutes) Discuss how gathering information on epicenters can be applied. If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. 61 33
Note the differences in U.S. Geological Survey, U.S. Department of the Interior. 3. Epicenter. View Notes - Locating_an_epicenter_activity from SCIENCE Earth Scie at Toms River High North. 0000078169 00000 n
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. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . Locating an Epicenter Activity - Arkansas Geological Survey and S waves to travel any distance up to Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. 13. Hand out the worksheets to the groups and direct them to read through the instructions. Answer the following questions in the spaces provided. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. trailer
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\a.1. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. (, 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. P and Swaves are body waves and travel, through the interior of the earth. HTn {0,`K6}(J6]&Q^"!q57y_VQ9fp3/?Mc=KGsrrt:c\$Lh`4}>C>`qcSj0[YpZ_Su(322/N
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Short for "secondary wave" or "shear wave." (Figure 3):. approximate period of the surface waves in seconds? endstream
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The answer is the San Andreas Fault. 0000002544 00000 n
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. Y$Kr;V6[;Dq vg~cx:A[^jCssupwD
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Epicenter Location on Earth's surface directly above the focus of the earthquake 5. Students also investigate which structural designs are most likely to survive an earthquake. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. different types of seismic waves. All the arcs should intersect at a common point - the epicenter. 0000004511 00000 n
Today we will be using a traveltime graph, where the vertical separation between, the P and S curves is equal to the difference in the arrival times between the Pwave, and Swave. The lag time for any Mr Gneiss. 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. 0000002840 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. As you may know, people have look numerous times for . (Figure 3):. Do you agree with this alignment? Use Figure 5 and the travel-time graph in Figure 4 to determine . Last modified July 18, 2012. 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. and S waves depends on the distance from the epicenter of the answer the following question. Seismic Waves. Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. 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. Thanks for your feedback! endstream
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hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) Legal. Activity 4: Locating an Earthquake Epicenter Examining Seismograms The three basic types of seismic wave generated by an earthquake at its focus are Pwaves, Swaves, and Surface waves. Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. 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. Point on Earth's surface directly above an earthquake's focus. 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). 5. focus - the point within Earth where an earthquake originates. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . 0000010002 00000 n
MS-ESS3-2. Please answer the following questions using the earthquake video - shake, shake, shake. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! The farther away the epicenter is, the greater the difference . 4. fault - a fracture in Earth's crust where the rocks on either side have moved. Most of these earthquakes are small tremors that cant be felt by people, but occasionally an earthquake occurs on a large magnitude that causes millions of dollars in property damage and kills hundreds to thousands of people. 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. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. (Grades
located 1,000 miles from the What data is used to determine magnitude? How does the lag time change as you get farther and (Source: USGS). After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. 0000003855 00000 n
Finding the Epicenter. Based on your answers to the previous question, what is the lag time for locations that are Locating the epicenter of an earthquake worksheet answer key, locating the epicenter of an earthquake worksheet pdf, chapter 7 lab 1 locating epicenters answer key, how many seismographs are needed to locate the epicenter of an earthquake. Quick Tips. minutes? 0 500 1000 1500 2000 2500 3000 0000006538 00000 n
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As discussed earlier in this lesson, this method of determining the epicenter of an . First locate and mark the three seismic stations on the world map provided below. In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. One seismogram indicates the distance to the epicenter. What types of engineers might use this data the most? : 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. Short for "primary wave" or "pressure wave." 0000079769 00000 n
Earthquakes & Volcanoes Test Review Answers. /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?? Click for facts and worksheets in PDF! Thanks for your feedback! They use three seismographs in a process called triangulation to determine earthquake epicenters. Seismic stations detect earthquakes by the tracings made on seismographs. 0000030968 00000 n
To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. 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.
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