activity 4 locating an earthquake epicenter answer key

Where the 3 circles intersect is the approximate location to the epicenter of the earthquake. 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 0000003855 00000 n What is the time lag for the Seattle, Washington, seismic station? S-P interval: The time interval between the arrivals of P and S waves. aqmd. What data is used to determine magnitude? One seismogram indicates the distance to the epicenter. earthquake - shaking and vibration of Earth's surface. HS]o01j6R0iMm4U=wL8]BE< How does the period of the P waves compare to the period of the surface waves? 13.4: Locating an Earthquake Epicenter - Geosciences LibreTexts Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. 1) Identify the general term for waves released from an earthquake. Hands-on Activity Earthquakes Living Lab: Finding Epicenters between arrival of P and S waves is called S wave: The second seismic wave of an earthquake. There are two sets of data and maps to do this activity/ lab for than once. As the drum rotated, the 0000010002 00000 n 1. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. Earth and Space, Physical Science, A process called triangulation uses seismic data from three locations to identify the epicenter of an earthquake.copyrightCopyright USGS http://earthquake.usgs.gov/learn/kids/eqscience.php. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. This section explains what earthquakes and faults are and what causes earthquakes. waves from a distant earthquake. 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To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. The seismometers are shown as green dots. longer or shorter). 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. Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. The vertical lines, spaced one How is the magnitude of an earthquake determined? 0000079769 00000 n (Listen to student ideas.) By looking at the time between the arrivals of the P- and S-waves, one can determine the distance to the earthquake from that station, with longer time intervals indicating longer distance. Epicenter Location on Earth's surface directly above the focus of the earthquake 5. 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. PDF Locating an Epicenter Activity - Arkansas Geological Survey 1. The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. Notify the classroom teacher of technology needs (overhead projector). Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). The calculated distance from each seismometer to the earthquake is shown as a circle. Lab Activity Locating Epicenters Flashcards | Quizlet In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. Three seismographs are needed. %PDF-1.4 % distance from transducer to the focal point. 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. The longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. A minimum of three seismic stations is necessary to locate an epicenter. %PDF-1.5 % Richter scale Method of earthquake measurement based on the amplitude of seismic . 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. Locating an Earthquake's Epicenter - American Geosciences Institute 6.17: Locating Earthquake Epicenters - K12 LibreTexts PDF Example Answers - TeachEngineering What is an earthquake? The, amount of time that passes between the Pwave arrival and the Swave arrival is. Answer Key: Lab 5 Earthquakes - Find People EARTHQUAKES: Epicenter Determination and Seismic Waves . Finding the epicenter worksheet answer key. The magnitude is the logarithm of the amplitude of the ground wave. 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. 0000001736 00000 n If the lag time were measured at a location closer to the epicenter, how would it compare Short for "primary wave" or "pressure wave." Great exercise for Regents Earth Science. Last modified July 18, 2012. All 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), minutes and P waves 8 minutes to If your seismograph station is Graphs, charts, and images can be used to identify patterns in data. 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. 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. at that station. Cross), Give Me Liberty! It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. Develop a solution to a technological problem that has the least negative environmental and social impact. m>r/Q[6 0 500 1000 1500 2000 2500 3000 Every year, earthquakes cause death and destruction worldwide. Describe the process of triangulation to locate an epicenter. 0000001746 00000 n earthquakes. Alignment agreement: 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"? Why might the triangulation method not always produce an exact point (other than your measurement errors)? a project of D2L (www.achievementstandards.org). The farther a station is from the Please answer the following questions using the earthquake video shake, shake, shake. 0000001408 00000 n within type by subtype, then by grade, etc. This worksheet focuses on using the p and s graph to find different variables. How Can I Locate the Earthquake Epicenter? | Michigan Technological Triangulation is required to determine exactly where it happened. Then do the same for the S-wave. How does the lag time change as you get farther and Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif 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 this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. 0000055643 00000 n Lab 8 - earthquake lab - Lab: Locating the Epicenters of Earthquakes d>(ZvO= 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. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. Triangulation and Magnitude: Student pairs complete the worksheet, which includes following a tutorial/simulation accessed through the Earthquakes Living Lab. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) approximate period of the surface waves in seconds? Assess their understanding based on the thoroughness of their answers. At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. Expert Answer. How does distance from the epicenter affect the S-P time interval? 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. To locate the epicenter of the earthquake, seismologists use the . 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. 0000031066 00000 n (Grades Focus. Ask students what fault they think caused this earthquake. Success is figuring out that the estimated magnitude is 5.9. Short for "secondary wave" or "shear wave." miles from the epicenter of an It shows the time required for P "`B(R6sj [CX7p+s =#;~ `'kA Describe the logarithmic nature of the earthquake magnitude scale. 5 4. These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. consider a seismograph stationed 3, Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. minutes = 6 minutes. 0000008845 00000 n (Grades The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. 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. Activity: Locating an Earthquake Epicenter Lecture 3 Damage from the earthquake was widespread, but the actual location of the earthquake (the epicenter) follow our easy steps to get your lab activity locating epicenters answer key well prepared rapidly choose the template in the library enter all necessary information in the required llable areas the Thus technology use varies from region to region and over time. Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. 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. 9 - Figure 2 is a seismic wave travel-time Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . and S waves depends on the distance from the epicenter of the answer the following question. Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. different types of seismic waves. 0000078100 00000 n You will receive your score and answers at the end. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. 0000078169 00000 n 0000001604 00000 n El trmino tambin puede hacer referencia al ttulo o nombre de alguien a quien se diri, Online Education Strategies (UNIV 1001 - AY2021-T), Advanced Care of the Adult/Older Adult (N566), Advanced Design Studio in Lighting (THET659), Introduction to Health Information Technology (HIM200), Biological Principles II and Lab (BIOL 107/L), PHIL ethics and social responsibility (PHIL 1404), Foundational Concepts & Applications (NR-500), Introduction To Project Management Software (CSBU539), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), BSC 2085-Study Guide - Dr. Alfonso Pino - Online course, Lecture notes, lecture all lectures - lecture notes from professor alan klein, Full Graded Quiz Unit 3 - Selection of my best coursework, EES 150 Lesson 2 Our Restless Planet Structure, Energy, & Change, General Chemistry I - Chapter 1 and 2 Notes, 1-2 Short Answer- Cultural Objects and Their Culture, Historia de la literatura (linea del tiempo), ACCT 2301 Chapter 1 SB - Homework assignment. However, please review it for the specific setting, materials, students, and conventional safety precautions. Hand out the worksheets to the groups and direct them to read through the instructions. inch = 500 km. PDF Page - 1 Lab 08 - Seismology - Locating the Epicenter of an Earthquake Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. The time For lower grades, just introduce the concepts of triangulation and the magnitude scale; a thorough understanding of P and S waves is not vital. Download. Also commonly termed the focus. 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. PDF ActivityEarthquake Location* - Cascadia Earthscope Earthquake and Use Figure 5 and the travel-time graph in Figure 4 to determine . 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. 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. Students also investigate which structural designs are most likely to survive an earthquake. All the arcs should intersect at a common point - the epicenter. 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. HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D Jj=.9,z!#@n5YCu>R88tfFRX=iRK HtA1D41`s(GME$Ke*YdEOYf2-:r. 0000005544 00000 n Describe what the "magnitude" of an earthquake is. 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. See Answer. Find 23 millimeters on the right side of the chart and mark that point. The longer the time is between the P-and S-wave . 0000030504 00000 n Sharing Information/Thinking Ahead: In the Evaluate section of the worksheet, student pairs are asked to compose answers to two questionswhether they think seismology is a reliable science and ways seismic data is useful for engineers. Section 8.1 What Is an Earthquake? Locating An Earthquake Epicenter Worksheet Answers Millions of people witnessed the motion of the earthquake on television. 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PDF Finding Epicenters and Measuring Magnitudes Worksheet As discussed earlier in this lesson, this method of determining the epicenter of an . USGS Earthquake Hazards Program 0000004769 00000 n 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. Material is sheared side to side, perpendicular to the direction of wave propagation. locate and label the epicenter of the earthquake on this map. !5(~q* 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. Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. 3. Moment magnitude scale. (Grades ' endstream endobj 69 0 obj <> endobj 70 0 obj [85 0 R] endobj 71 0 obj <> endobj 72 0 obj <> endobj 73 0 obj <>stream The farther away the epicenter is, the greater the difference . Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. 0000030968 00000 n MS-ESS3-2. 107 0 obj <>stream Thus, the Richter scale is used for measuring small earthquakes (3.5 M or less), while the moment magnitude scale is used for measuring stronger earthquakes (3.5 M or higher). 0000030240 00000 n graph. Student exploration Graphing Skills SE Key Gizmos Explore Learning. U.S. Geological Survey, U.S. Department of the Interior. 0000000856 00000 n Many updates and improvements! 0000001533 00000 n The spot where those three circles intersect is the epicenter (Figure 13.12). Epicenter. Earthquakes & Volcanoes Test Review Answers. Earthquakes and Volcanoes. Activity 4 Locating An Earthquake Epicenter Answers: Fill Out & Sign . Share with Classes. Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. 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. gov For online instructions and current fees click here. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. 3000 miles. 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! The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. Do you agree with this alignment? Though they may weaken with distance, seismographs are sensitive enough to still detect these waves. 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. Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Locating an Epicenter Activity - Arkansas Geological Survey Read through the sections What Is Seismology and What Are Seismic Waves?, Where Do Earthquakes Happen?, and Why Do Earthquakes Happen? to answer the following questions: What is the difference between S and P waves? If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. 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 . Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory Focal Depth. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. 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.