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 technology, engineering or math (STEM) educational standards. Every earthquake is recorded on numerous seismographs located in different directions. 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. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. How is the magnitude of an earthquake determined? If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". 6. Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. 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Find 23 millimeters on the right side of the chart and mark that point. Though the distance to the epicenter can be determined using a travel-time graph, the direction cannot be told. Lab Exercise #2: Locating the Epicenter of an Earthquake In this lab exercise, you will locate the epicenter of an earthquake. 0000001604 00000 n Describe what the "magnitude" of an earthquake is. 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. 17 Station St., Ste 3 Brookline, MA 02445. Apr 8, 2020 One seismogram indicates the distance to the epicenter. Answers to the Finding the Epicenter Gizmos Lab - Name: Earthquakes 2 During an earthquake, seismic waves are sent all over the globe. Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. Practice with Triangulation: Locating an earthquake epicenter. Zip. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, 0000115324 00000 n Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. 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. Based on your answers to the previous question, what is the lag time for locations that are Hand out the worksheets to the groups and direct them to read through the instructions. It shows the time required for P 0000006984 00000 n Please answer the following questions using the earthquake video - shake, shake, shake. (from left to right). Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. P and Swaves are body waves and travel, through the interior of the earth. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Scientists use triangulation to find the epicenter of an earthquake. Three seismographs are needed. 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. 0000010002 00000 n The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. 0000003254 00000 n 0000003991 00000 n Upload a document. 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. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. It is slower than the same earthquake's P wave and cannot travel through liquids. 5 4. 0000001143 00000 n You will receive your score and answers at the end. 11 minutes elapsed between the first P wave and the last measurable surface wave. 0000001777 00000 n 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. Seismographs - Keeping Track of Earthquakes | U.S. Geological Survey 0000030240 00000 n Earthquakes can also cause tsunamis, which are very large waves that can damage coastlines and put coastal residents in danger. Locating An Earthquake Epicenter Lab Answers Thank you for reading Locating An Earthquake Epicenter Lab Answers . This worksheet focuses on using the p and s graph to find different variables. Sixty-seven people lost their lives, and property damage was estimated at $6 billion. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). activity 4 locating an earthquake epicenter The Science of Earthquakes | U.S. Geological Survey An earthquake is what happens when two blocks of the earth suddenly slip past one . and S waves to travel any distance up to Short for "primary wave" or "pressure wave." 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). locating the epicenter of an earthquake activity - TeachersPayTeachers Please answer the following questions using the earthquake video shake, shake, shake. Continue the discussion with the following questions (or assign these questions as homework): Have student groups explore one or more of the other two regions (Southern California and Japan) provided in the Virtual Earthquake simulation. U.S. Geological Survey, U.S. Department of the Interior. earthquake though). Expert Answer. Download. 0000106240 00000 n PDF Lecture 3 Activity: Locating an Earthquake Epicenter As discussed earlier in this lesson, this method of determining the epicenter of an . After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, Finding the epicenter worksheet answer key. EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. distance = travel time for S waves Every year, earthquakes cause death and destruction worldwide. The, amount of time that passes between the Pwave arrival and the Swave arrival is. 0000001562 00000 n For this activity, select the "Chile" box. S wave: The second seismic wave of an earthquake. Finding the Epicenter. 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. 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. 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 Earthquakes occur along faults, which are cracks in the Earths crust that build tension. 0000000956 00000 n 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. %PDF-1.5 % It takes S waves 14. xb``d``Id`a`Ab@_ :iWGi>|q` 0000006011 00000 n Share with Classes. 1. Show students some of the numerous online animations comparing the movements of P and S waves. longer or shorter). 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. n{6c&6NK*U;=9i%nF We additionally manage to pay for . PDF EARTHQUAKES: Epicenter Determination, Seismic Waves, and Hazards - WOU ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows - Chegg 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. 0000006538 00000 n They use three seismographs in a process called triangulation to determine earthquake epicenters. 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. 83 0 obj <> endobj Direct students to finish the activity by completing the. (Grades 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 This is determined by the P-and S-wave arrival times. 12 Earthquake Location Lab Answer Key Full PDF - www.yvc.moeys.gov Next, have student groups answer the eight questions in the. 4. fault - a fracture in Earth's crust where the rocks on either side have moved. 0000001746 00000 n Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. 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. Section A - Operator Information 1. to the lag time measured at this location? 9 - When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. As you read and complete the activity, take notes so you can complete the. Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. PDF Example Answers - TeachEngineering graph. The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. The farther a station is from the 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. 0000000856 00000 n 9 - S-P interval: The time interval between the arrivals of P and S waves. Triangulation to Locate an Earthquake | U.S. Geological Survey Geologists use seismic waves to locate an earthquake's epicenter. How Can I Locate the Earthquake Epicenter? | Michigan Technological What are those limits? at that station. to the lag time measured at this location? earthquake - shaking and vibration of Earth's surface. Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. As the drum rotated, the Subjects: Earth Sciences, General Science Grades: 5th - 8th Types: Activities, Laboratory 0000033429 00000 n How does distance from the epicenter affect the S-P time interval? The real-world earthquake data is viewable via a graphical interface using a scaling map. 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. Wikipedia, The Free Encyclopedia. PS: We do not share personal information or emails with anyone. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . These natural disasters may be mitigated, however, by insightful and creative engineering. (Source: USGS). In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics; Short for "secondary wave" or "shear wave." 0000007783 00000 n Do you agree with this alignment? Practicing this technique, the students work several problems on a map of the US. within type by subtype, then by grade, etc. %%EOF 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? inch = 500 km. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. Solved ACTIVITY 2B Locating an Earthquake Figure 5 shows - Chegg Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). Key Facts & Information. 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 learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. 0000008845 00000 n 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. 0000002009 00000 n Draw your signature, type it, upload its image, or use your mobile device as a signature pad. 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. Locating_an_epicenter_activity-MB.pdf - Activity 4: Locating an How do we determine the epicenter of an earthquake? To do this, have the students use, Find the epicenter of the earthquake on the map (. ' 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 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. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. The magnitude is the logarithm of the amplitude of the ground wave. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? Locating Earthquake Epicenter Lab Answer Key buysms de. Success is figuring out that the estimated magnitude is 5.9. Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. 0000055643 00000 n Thanks for your feedback! PDF Page - 1 Lab 08 - Seismology - Locating the Epicenter of an Earthquake Some places are more prone to earthquakes than others. P wave: The first seismic wave of an earthquake. Describe the logarithmic nature of the earthquake magnitude scale. The process is called triangulation. Notify the classroom teacher of technology needs (overhead projector). 9 - Make arrangements so that each student group has a computer with Internet access. 0000001862 00000 n If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Today, most seismologists no longer follow Richter's original methodology because it does not give reliable results when applied to stronger earthquakes and it was not designed to use data from earthquakes recorded at epicentral distances greater than ~600 km. Activity 4 locating an earthquake epicenter answers: Fill out & sign 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. Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. 0000030968 00000 n The distance is in kilometers. Locating Earthquake Epicenter Teaching Resources | TPT To complete the activity, some prior . 9 - 1. PDF Locating An Earthquake Epicenter Lab Answers - Full PDF All 100,000+ K-12 STEM standards covered in TeachEngineering are collected, maintained and packaged by the Achievement Standards Network (ASN), 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. Thus technology use varies from region to region and over time. 2. PDF Finding Epicenters Lab Answer Key Lab Pdf Use this information to complete the following. HTAn and S waves depends on the distance from the epicenter of the answer the following question. How does the lag time change as you get farther and
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