activity 4 locating an earthquake epicenter answer key

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. gov For online instructions and current fees click here. The real-world earthquake data is viewable via a graphical interface using a scaling map. S waves. What is an earthquake? How Can I Locate the Earthquake Epicenter? | Michigan Technological Subjects: 0000005081 00000 n 12), computer or other device with Internet access, journal or writing paper for each student. Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. Richter scale Method of earthquake measurement based on the amplitude of seismic . Find 23 millimeters on the right side of the chart and mark that point. The time 0000005544 00000 n 0000002094 00000 n endstream endobj 84 0 obj <> endobj 85 0 obj <> endobj 86 0 obj <>stream Triangulation to Locate an Earthquake | U.S. Geological Survey hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) They use three seismographs in a process called triangulation to determine earthquake epicenters. Lab Lesson 4 - Lab Lesson 4: Earthquakes and Seismology, P wave. 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. aqmd. 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. 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. 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. Then do the same for the S-wave. How can you locate an earthquake's epicenter? 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For example, E}g7$i(=K)"aj%v]vPcYloi@X3noGX{[XucOgkdF.>Ym^fwrQf;8_Nok3w\;?n_Hhc?>k\o[%DgwJ'3d.lTqDy_aJw! 12), Analyze and interpret data about natural hazards using direct and indirect evidence It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. 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. Record your answer from Lab Exercise #2, Step 1. minutes = 6 minutes. Please answer the following questions using the earthquake video shake, shake, shake. This opens a new window to Michigan Techs UPSeis informational site about earthquakes and seismology. ACTIVITY 4.2B Locating an Earthquake Figure 4.5 shows - Chegg Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. 0000078100 00000 n Privacy Policy, Seismograms from seismic stations in Fresno, CA, Phoenix, AZ, and Las Vegas, NV, A modified travel time curve for S-P wave, A Modified Travel Time Curve for S-P Wave. inch = 500 km. PDF EARTHQUAKE EPICENTER LOCATION EXERCISE - Idaho geology time for any point that is 3,000 miles The hypocenter is the point within the earth where an earthquake rupture starts. earthquakes. What data is used to determine magnitude? Thanks for your feedback! (5 minutes) Discuss how gathering information on epicenters can be applied. Solved ACTIVITY 2B Locating an Earthquake Figure 5 shows - Chegg Describe what the "magnitude" of an earthquake is. Do limits exist on what science can predict? 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. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. Hand out the worksheets to the groups and direct them to read through the instructions. What is an earthquake? (Source: USGS). 0000004457 00000 n The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. Step 1: ans- d) 65 seconds Ste . 0000001736 00000 n Once three seismographs have been located, find the time interval between the arrival of the P-wave . : 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. Locating Earthquake Epicenter Teaching Resources | TPT 1. What was the lag time (in minutes) at this location? This investigation is considered generally safe to do with students. 6. Focus (aka Hypocenter) is the location in the Earth where the earthquake starts. 0000003991 00000 n Travel-time graphDistance in Miles, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, seismogram. graph. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. Student exploration Graphing Skills SE Key Gizmos Explore Learning. Millions of people witnessed the motion of the earthquake on television. The point beneath Earth's surface where rock breaks under stress and causes an earthquake. 0000078169 00000 n This is determined by the P-and S-wave arrival times. Quick Tips. What are those limits? Based on your answers to the previous question, what is the lag time for locations that are 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. Once three seismographs have been located, find the time interval between the arrival of the P-wave and the arrival of the S-wave. S wave: The second seismic wave of an earthquake. %PDF-1.4 % Accessed December 11, 2013. http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php. P and Swaves are body waves and travelthrough the interior of the earth. PDF Page - 1 Lab 08 - Seismology - Locating the Epicenter of an Earthquake velocity, amplitude, and frequency of the 0000001746 00000 n 0000007097 00000 n What is the Reading Strategy. Alignment agreement: 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. HTn0MmcHCB 4. Ask students what fault they think caused this earthquake. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! Details. The distance is in kilometers. Locating Earthquake Epicenter Lab - Triangulation sheet for students and/or teachers to use (Slide 6), and answer key (Slide 7). 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. Figure 8. Triangulation is required to determine exactly where it happened. approximate period of the surface waves in seconds? Some places are more prone to earthquakes than others. 0000002383 00000 n Practicing this technique, the students work several problems on a map of the US. Was there an initial quake followed by smaller quakes? at that station. Moment magnitude scale. Run through the investigation yourself and record the data, just to see how long it takes. In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. To do this, have the students use, Find the epicenter of the earthquake on the map (. Three seismographs are needed. Earthquakes and Volcanoes. 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. The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). During an earthquake, seismic waves are sent all over the globe. epicenter of an earthquake, how distance from transducer to the focal point. 0 500 1000 1500 2000 2500 3000 Locating Epicenter Lab Worksheet (1).docx, Updating Patient Registration B at 08_10_2022 03_03 PM.pdf, You need to deploy an Azure environment that meets the company migration plan, Step 1 of 2 Program 1 A Simple Python Program Welcome with Two Messages Running, More women in academia report polarization assimilation in male skewed and male, A TACACS B RADIUS C Kerberos D SAML Correct Answer D QUESTION 321 A network, PTSD in Children and Adolescents - Copy - Copy - Copy - Copy.docx, Effects of Excitation and Prime Mover Control The excitation control helps to, D1 Fundamental security design principles.docx, Question 5 Correct Mark 100 out of 100 Remove flag Question 6 Correct Mark 100, Thomas Concurrence broadly attacked current NDD Federal gov should be allowed to, 769 Water at 15C is to be heated to 65C by passing it over a bundle of 4 m. Course Hero is not sponsored or endorsed by any college or university. question 1 of 3. Epicenter. 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. 0000001777 00000 n triangulation: A method to determine exactly where an earthquake originates. (Grades 9 - 12). 0000030240 00000 n After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999. Therefore, the lag The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. 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. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. from the epicenter will be 14 8. (Source: USGS, Wikipedia). How does the lag time change as you get farther and 83 0 obj <> endobj 3. As discussed earlier in this lesson, this method of determining the epicenter of an . seismograph: An instrument that measures motions of the ground, including those of seismic waves generated by earthquakes. use slide 6 and answer key slide 7 how can i locate the earthquake epicenter michigan web the epicenter of the earthquake is somewhere on the edge of that circle do the When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. 13.4: Locating an Earthquake Epicenter - Geosciences LibreTexts

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