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Course Hero is not sponsored or endorsed by any college or university. Answer the following questions in the spaces provided. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media. It takes S waves 14. 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. Earthquakes & Volcanoes Test Review Answers. Locating Earthquake Epicenter Lab Answer Key buysms de. Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. They use three seismographs in a process called triangulation to determine earthquake epicenters. Wikipedia, The Free Encyclopedia. Seismic stations detect earthquakes by the tracings made on seismographs. 0000003254 00000 n 0000002009 00000 n 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. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? Cross), Give Me Liberty! Locating An Earthquake Epicenter Lab Answer Key 0000002840 00000 n Earthquakes and Seismic Waves - carlisleschools.org 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. Empirical evidence is required to differentiate between cause and correlation and make claims about specific causes and effects. 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. graph. The longer the time is between the P-and S-wave . 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). Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. 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! MS-ESS3-2. 0000001562 00000 n For example, technology, engineering or math (STEM) educational standards. 0000001408 00000 n A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. 0000004224 00000 n 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. (, Have any of you ever experienced an earthquake or know anyone who has? The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. Section A - Operator Information 1. 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. HtA1D41`s(GME$Ke*YdEOYf2-:r. by. Finding the Epicenter. Copyright 2023. 0000002658 00000 n Mr Gneiss. Use the graph to answer the questions that follow. American Geosciences Institute. Download. What data is used to determine magnitude? Virtual Earthquake (tutorial/simulation) 1996. Edit your locating an earthquake epicenter worksheet answers online. In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. What is an earthquake? Earthquakes occur along faults, which are cracks in the Earths crust that build tension. within type by subtype, then by grade, etc. 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. When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. locate and label the epicenter of the earthquake on this map. Ask students what fault they think caused this earthquake. You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. (, 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. 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) . Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. (Figure 3):. approximate period of the surface waves in seconds? Students also investigate which structural designs are most likely to survive an earthquake. 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. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. Seismograms 1. 9 - Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. The, amount of time that passes between the Pwave arrival and the Swave arrival is. xb``d``Id`a`Ab@_ :iWGi>|q` trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream PDF. The earthquake occurred somewhere along that circle. It shows the time required for P The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. 0000001861 00000 n hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. 6. Thus technology use varies from region to region and over time. %%EOF If your seismograph station is 0000010002 00000 n To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. PDF Finding Epicenters Lab Answer Key Lab Pdf Alignment agreement: 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. [k0 |`2dGXGGGd00A(60P-e = F5n -f$ C Success is figuring out that the estimated magnitude is 5.9. HTn0MmcHCB 0000001604 00000 n Epicenter is the location on the surface of the Earth directly above where the earthquake starts. Finding the epicenter worksheet answer key. Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. 9 - Some places are more prone to earthquakes than others. PDF EARTHQUAKES: Epicenter Determination, Seismic Waves, and Hazards - WOU 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 P and Swaves are body waves and travelthrough the interior of the earth. 13.4: Locating an Earthquake Epicenter - Geosciences LibreTexts If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". Where the 3 circles intersect is the approximate location to the epicenter of the earthquake. Add to Library. Once three seismographs have been located, find the time interval between the arrival of the P-wave . Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. 3000 miles. All the arcs should intersect at a common point - the epicenter. Make changes to the sample. Free K-12 standards-aligned STEM curriculum for educators everywhere. 61 33 Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. An earthquake is the violent movement of tectonic plates in the Earth's crust. 9 - Mark the first arrival of the swave on each seismogram. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. time for any point that is 3,000 miles The point beneath Earth's surface where rock breaks under stress and causes an earthquake. The spot where those three circles intersect is the epicenter (Figure 13.12). Section 8.1 What Is an Earthquake? When the tension becomes too great, the fault slips, causing an earthquake. Share with Classes. (Source: USGS, Wikipedia). Must engineers be content with mitigating disasters, instead of preventing them? Focal Depth. 0000003855 00000 n Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an %PDF-1.5 % 3. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. 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. hbbd``b`$C`q9 X_$_g`bdxc`X 92 0 obj <>/Filter/FlateDecode/ID[]/Index[83 25]/Info 82 0 R/Length 62/Prev 466624/Root 84 0 R/Size 108/Type/XRef/W[1 2 1]>>stream 12), computer or other device with Internet access, journal or writing paper for each student. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). 0000000016 00000 n Use Figure 4.5 and the travel-time graph in Figure 4.4 to determine the distance between each station and THREE SEISMOGRAMS the epicenter. What is the time lag for the Seattle, Washington, seismic station? A seismograph is securely mounted onto the surface of the earth so that when the earth shakes, the entire unit shakes with it EXCEPT for the mass on the spring, which has inertia and remains in the same place. 0000030504 00000 n (Grades PDF Finding Epicenters and Measuring Magnitudes Worksheet Earthquakes and Volcanoes. If you can't find an answer to your question, please contact us. The USGS Earthquake Hazards Program is part of the National Earthquake Hazards Reduction Program (NEHRP), established by Congress in 1977, and the USGS Advanced National Seismic System (ANSS) was established by Congress as a NEHRP facility. Learn more How Can I Locate the Earthquake Epicenter? to the lag time measured at this location? HS-PS4-1. First locate and mark the three seismic stations on the world map provided below. Use Figure 5 and the travel-time graph in Figure 4 to determine . Lab 8 - earthquake lab - Lab: Locating the Epicenters of Earthquakes 11 minutes elapsed between the first P wave and the last measurable surface wave. 0000000956 00000 n As discussed earlier in this lesson, this method of determining the epicenter of an . 0000002383 00000 n m>r/Q[6 These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). Figure 1 is a simplified example of a PDF Page - 1 Lab 08 - Seismology - Locating the Epicenter of an Earthquake In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. [*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 P wave. Thanks for your feedback! Locating An Earthquake Epicenter Worksheet Answers After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. activity illustrates how the epicenter of an earthquake is found. lag time. The travel-time graph 17 Station St., Ste 3 Brookline, MA 02445. All rights reserved. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. 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. Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 : 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. The epicenter is the point directly above it at the surface of the Earth. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. Focus. Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. PS: We do not share personal information or emails with anyone. earthquake though). Details. (Listen to student ideas.) Locating an Earthquake's Epicenter - American Geosciences Institute 107 0 obj <>stream Richter scale Method of earthquake measurement based on the amplitude of seismic . 87 0 obj <> endobj xref 87 28 0000000016 00000 n (from left to right). 83 0 obj <> endobj (Grades What is an earthquake? How does distance from the epicenter affect the magnitude (height) of the seismograph reading? How does distance from the epicenter affect the S-P time interval? 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 The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. 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 . 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? Locating Earthquake Epicenter Teaching Resources | TPT Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. Figure 13.10). Quick Tips. 0000004060 00000 n 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. Upload a document. 0000001736 00000 n PDF Example Answers - TeachEngineering 0000001862 00000 n Review their answers to assess their base knowledge of the subject matter. EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . aqmd. After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, earthquake - shaking and vibration of Earth's surface. Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. The farther a station is from the 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 What is the 0000005081 00000 n Earthquakes Living Lab: Finding Epicenters and Measuring Magnitudes ActivityWorksheet Example Answers 4 now big earthquakes are measured using the moment magnitude scale; both scales essentially rank the power (energy release) of the earthquake. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. located 1,000 miles from the triangulation: A method to determine exactly where an earthquake originates. Pwaves have the greatest velocity and reach theseismic station first. Develop a solution to a technological problem that has the least negative environmental and social impact. 0000030968 00000 n DOC Home - Westerville City Schools Step 1: ans- d) 65 seconds Ste . A minimum of three seismic stations is necessary to locate an epicenter. Zip. Key Facts & Information. 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. 0000106240 00000 n 2. 0000053998 00000 n Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. Copyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. 9 - 0000006011 00000 n This is determined by the P-and S-wave arrival times. PDF EARTHQUAKE EPICENTER LOCATION EXERCISE - Idaho geology To complete the activity, some prior . Finding the epicenter of an Earthquake by Ah - Ha Lessons 5.0 (1) $3.00 PDF Activity This lesson teaches the student the process scientists use to locate the epicenter of an EQ. 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. 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. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. 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. The uses of technologies and any limitations on their use are driven by individual or societal needs, desires, and values; by the findings of scientific research; and by differences in such factors as climate, natural resources, and economic conditions. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. 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.
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