12), Analyze and interpret data about natural hazards using direct and indirect evidence The period of P waves is shorter, than the period of surface waves. S wave: The second seismic wave of an earthquake. Last modified July 18, 2012. The earthquake occurred somewhere along that circle. 0 500 1000 1500 2000 2500 3000 Thanks for your feedback! The, amount of time that passes between the Pwave arrival and the Swave arrival is. PDF Locating an Epicenter Activity - Arkansas Geological Survey Earthquakes & Volcanoes Test Review Answers. Lab Activity Locating Epicenters Flashcards | Quizlet 3. PDF Locating An Earthquake Epicenter Lab Answers - Full PDF When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. Short for "primary wave" or "pressure wave." Key Facts & Information. Sixty-seven people lost their lives, and property damage was estimated at $6 billion. The seismometers are shown as green dots. Find 23 millimeters on the right side of the chart and mark that point. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. 0000002383 00000 n Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, If the lag time were measured at a location closer to the epicenter, how would it compare The living lab presents earthquake information through a focus on four active seismic areas and historic earthquakes in those areas. 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. Also called seismometer. Richter scale Method of earthquake measurement based on the amplitude of seismic . As you read and complete the activity, take notes so you can complete the. The spot where those three circles intersect is the epicenter (Figure 13.12). located 1,000 miles from the Alignment agreement: Solved ACTIVITY 2B Locating an Earthquake Figure 5 shows - Chegg 0000007097 00000 n The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. 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. moment magnitude scale: Similar to the Richter scale, but replacing its use starting in the 1970s for more accuracy in measuring big earthquakes (magnitudes > 3.5) from greater distances. Using 3 seismograms the students will be able to triangulate the epicenter of an earthquake. The simulation renders three circles on a map and directs students to find the epicenter. surface wave? Shear wave from earthquake, moving slower than primary waves, through solid material only. Locating_an_epicenter_activity - Activity4 - Course Hero Facility Name Busine Child ren Information Child Name C. Child Social Security Number Type of Case being filed - Check only one category. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 4. fault - a fracture in Earth's crust where the rocks on either side have moved. %PDF-1.3 % Add to FlexBook Textbook. It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. In a concluding class discussion, have groups share their ideas about engineering and one new thing they learned about earthquakes. within type by subtype, then by grade, etc. 0000106240 00000 n The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. activity illustrates how the epicenter of an earthquake is found. minutes and P waves 8 minutes to 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. 9 - Y$Kr;V6[;Dq vg~cx:A[^jCssupwD endstream endobj 80 0 obj <> endobj 81 0 obj <>stream 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. Introduction: Before student pairs look at the Earthquakes Living Lab, direct them to complete the Engage section of the Finding Epicenters and Measuring Magnitudes Worksheet, which asks them to apply any prior knowledge and/or speculate as to what the Richter magnitude scale is and what an epicenter is. 0000103591 00000 n Locating Earthquake Epicenter Worksheet Answer Key different types of seismic waves. The lag time for any Details. 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). (from left to right). Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. 0000001143 00000 n 13 4 locating an earthquake epicenter geosciences libretexts . 0000115324 00000 n To locate the epicenter of the earthquake, seismologists use the . 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 longer the time between the arrival of the P-wave and S-wave, the farther away is the epicenter. HS]o01j6R0iMm4U=wL8]BE< Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. 1. Must engineers be content with mitigating disasters, instead of preventing them? d>(ZvO= earthquakes. Direct students to finish the activity by completing the. 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 . velocity, amplitude, and frequency of the to the lag time measured at this location? 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For purposes of this activity, the least complicated and probably most accurate approach is to just use the term "magnitude," without needing to say "on the Richter scale" or "on the moment magnitude scale." 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. Student exploration Graphing Skills SE Key Gizmos Explore Learning. Once three seismographs have been located, find the time interval between the arrival of the P-wave . pen recorded the arrival of P, S, and surface HlRnQ?R\>BjK' In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. important in helping seismologists determine the epicenter of the earthquake. determine the epicenter using the S P (S minus P) method. PDF Lecture 3 Activity: Locating an Earthquake Epicenter question 1 of 3. 500p;333aXb3 \a.1. 0000005544 00000 n Explains how to find an earthquake epicenter using at least three seismograph stations. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. H\0y Do limits exist on what science can predict? 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. www.teachengineering.org/activities/view/csm_findingepicenters_activity1, Search curriculum by Common Core standards, http://www.teachengineering.org/livinglabs/earthquakes/, Click to view other curriculum aligned to this Performance Expectation, Finding Epicenters and Measuring Magnitudes Worksheet, Finding Epicenters and Measuring Magnitudes (docx), Finding Epicenters and Measuring Magnitudes (pdf), Finding Epicenters and Measuring Magnitudes Example Answers (docx), Finding Epicenters and Measuring Magnitudes Example Answers (pdf), Earthquakes Living Lab: FAQs about P Waves, S Waves and More, Seismic Waves: How Earthquakes Move Through the Earth, Earthquakes Living Lab: Designing for Disaster, http://www.teachengineering.org/livinglabs/index.php, https://www.newpathonline.com/api_player/enus_54_6304/LXX/index.html. We additionally manage to pay for . (Grades 6 - 8). What was the lag time (in minutes) at this location? lag time. View Notes - Locating_an_epicenter_activity from SCIENCE Earth Scie at Toms River High North. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. HtA1D41`s(GME$Ke*YdEOYf2-:r. Swaves arrive at the seismic station after the Pwaves. Wikipedia, The Free Encyclopedia. Ask students what fault they think caused this earthquake. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). Step 1: ans- d) 65 seconds Ste . Analyze and interpret data on natural hazards to forecast future catastrophic events and inform the development of technologies to mitigate their effects. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. Through the online Earthquakes Living Lab, student pairs explore various types of seismic waves and the differences between shear waves and compressional waves. 0000002544 00000 n Seismographs - Keeping Track of Earthquakes | U.S. Geological Survey 0000078100 00000 n 0000003254 00000 n Scientists and engineers around the globe gather data through observation and experimentation and use it to describe and understand how the world works. The process is called triangulation. Divide the class into student pairs, and have them assemble at their computers with journals/paper and writing instruments. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. PDF. 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. Zip. Tips: Make sure students are reading the S waves and not the P waves. 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. approximate period of the surface waves in seconds? Moment magnitude scale. 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. Locating an Epicenter Activity - Arkansas Geological Survey 1. Describe what the "magnitude" of an earthquake is. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. BDF endstream endobj 74 0 obj <>stream 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. 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. 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. epicenter of an earthquake, how This investigation is considered generally safe to do with students. If you complete all the problems, you should be able to: Identify P, S, and surface waves on a simple seismogram. Focus. Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. travel 3,000 miles. Use this information to complete the following. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. Share with Classes. m>r/Q[6 How does distance from the epicenter affect the magnitude (height) of the seismograph reading? Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. You can also download it, export it or print it out. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Solved Lab Exercise #2: Locating the Epicenter of an - Chegg The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. Free K-12 standards-aligned STEM curriculum for educators everywhere. For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. gov For online instructions and current fees click here. Great exercise for Regents Earth Science. ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! Using this resource students find the arrival times of P-waves and S-waves using a seismogram. 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. 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. =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. How do we determine the epicenter of an earthquake? 0000003991 00000 n 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. 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. 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 Students learn about factors that engineers take into consideration when designing buildings for earthquake-prone regions. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. 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? 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. What is the time lag for the Seattle, Washington, seismic station? Locating An Earthquake Epicenter Lab Answer Key 15 Bill Nye - Earthquakes Worksheet Key Earthquakes occur when the big pieces of earth's crust, called plates, move a little. What about P waves? (Grades 9 - 12). Students learn what causes earthquakes, how we measure and locate them, and their effects and consequences. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. PDF Finding Epicenters Lab Answer Key Lab Pdf 3000 miles. 0000002840 00000 n Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. 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? PDF Example Answers - TeachEngineering (Source: USGS, Wikipedia). MS-ESS3-2. The hypocenter is the point within the earth where an earthquake rupture starts. Reading Strategy. 0000001746 00000 n Focal Depth. Triangulation to Locate an Earthquake | U.S. Geological Survey 0000033429 00000 n 0000004224 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. You will analyze the records and locate the earthquake using a method known longer or shorter). 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. by. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. 12 Earthquake Location Lab Answer Key Full PDF - www.yvc.moeys.gov