9 - As the drum rotated, the d>(ZvO= /g$=#!$EbBbhD!,x so^6Uc})\uJs=fyY}j'|YjTm8B_[}*Ovm\[J'.mu?lQg,wzJM^X&P w>-T%*h%J4 yB@VPmP]@D------------,2dfY$"A!ANAASi)4$dniiiinH% Gxt5DJ) )9RRr$II'y ??O's^3@[{*{VT?nsNS!ilq]mFO?? The epicenter is the point directly above it at the surface of the Earth. For upper grades, have students work individually, do two of the three seismic area tutorials, and look up historical earthquakes to learn their magnitudes, and make data tables or graphs with this information. One seismogram indicates the distance to the epicenter. 12), Analyze and interpret data about natural hazards using direct and indirect evidence 1,000 miles from the epicenter of an earthquake? Direct students to finish the activity by completing the. Figure 2 is a seismic wave travel-time Question: ACTIVITY 2B Locating an Earthquake Figure 5 shows seismograms for the same earthquake recorded at three locations-New York; Nome, Alaska; and Mexico City. The wavelength and frequency of a wave are related to one another by the speed of travel of the wave, which depends on the type of wave and the medium through which it is passing. HTAn How are S and P waves used to determine how far away epicenters are? Earthquakes occur along faults, which are cracks in the Earths crust that build tension. What is the 0000003966 00000 n 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 . Ch Person/Attorney Filing: - Superior Court - Maricopa County - superiorcourt maricopa. HS-PS4-1. Explain the difference between S and P waves, and how their time interval is used to determine the epicenter location. Notify the classroom teacher of technology needs (overhead projector). 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. Use of the TeachEngineering digital library and this website constitutes acceptance of our Terms of Use and Privacy Policy. ya{I;W@DgMN2:UtbT=*+cY1.8Vm(u3Zt"J @9TAjJH@H_F3n7\Srdw~gAR#JQGj`ueS! gov For online instructions and current fees click here. It takes S waves 14. These natural disasters may be mitigated, however, by insightful and creative engineering. located 1,000 miles from the Practice with Triangulation: Locating an earthquake epicenter. During an earthquake, seismic waves are sent all over the globe. The vertical lines, spaced one 9 - Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. 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. 0000001893 00000 n pen recorded the arrival of P, S, and surface When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. and S waves depends on the distance from the epicenter of the answer the following question. To accurately locate an earthquake epicenter, records from three. What data is used to determine magnitude? Use this information to complete the following. First locate and mark the three seismic stations on the world map provided below. Sign, fax and printable from PC, iPad, tablet or mobile with pdfFiller Note-taking Worksheet. Share with Classes. What about P waves? Tips: Make sure students are reading the S waves and not the P waves. P wave. 6. hb```f``Rl@ (l"`+uk?0.a~@6Vm;| G3f`75@v@Wz|A4#w9{(` ) These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). It shows the time required for P Finding the Epicenter Determine the epicenter distance from three different seismographs. 0000005081 00000 n Short for "secondary wave" or "shear wave." 1. earthquake. hb```b````e``n`d@ A 'EF''oquE"ky#:}m;9JmkPt~=unFHy&|X:70 vILZ*|%6mD! P and Swaves are body waves and travelthrough the interior of the earth. 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). (from left to right). Section 8.1 What Is an Earthquake? View Notes - Locating_an_epicenter_activity from SCIENCE Earth Scie at Toms River High North. The period of P waves is shorter, than the period of surface waves. The Richter scale was created in the 1930s to assign a single number to quantify the energy released during earthquakes. What did it feel like? Legal. We have answers to the most popular questions from our customers. Expert Answer. surface wave? Three seismographs are needed. 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! PDF. 0 500 1000 1500 2000 2500 3000 Edit your locating an earthquake epicenter worksheet answers online. Click for facts and worksheets in PDF! hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0 Md|d&:zhe)7I? When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. The hypocenter is the point within the earth where an earthquake rupture starts. 0000010002 00000 n Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. It is called triangulation because a triangle has three sides, and it takes three seismographs to locate an earthquake. time for any point that is 3,000 miles Describe the logarithmic nature of the earthquake magnitude scale. 0000030968 00000 n Details. Please answer the following questions using the earthquake video shake, shake, shake. 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. Engineers first determine where earthquakes are likely to occur, and how severe they are likely to be. HTn0MmcHCB Students learn about the types of seismic waves produced by earthquakes and how they move through the Earth. Earthquakes and Seismic Waves Key Concepts . miles from the epicenter of an 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. 0000033429 00000 n Earthquakes and Volcanoes. 0000007097 00000 n 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 Record your answer from Lab Exercise #2, Step 1. from the epicenter will be 14 8. 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 If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. All the arcs should intersect at a common point - the epicenter. 0000053998 00000 n Note the differences in Click on New Document and select the file importing option: upload Locating the epicenter of an earthquake worksheet answer key from your device, the cloud, or a protected link. 9 - Section A - Operator Information 1. The period of a wave is the time between two adjacent wave peaks. One seismogram indicates the distance to the epicenter. epicenter, the longer the lag time measured trailer <<0444DE89825047A1A483C62E98F50868>]>> startxref 0 %%EOF 114 0 obj <>stream 0000001562 00000 n 3. Accessed December 11, 2013. http://www.sciencecourseware.com/virtualearthquake/, USGS Earthquake Magnitude Policy (implemented on January 18, 2002). Contact the teacher to find out the length of the class period, as well as how many copies of handouts and sets of materials you need to bring. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . As you may know, people have look numerous times for . graph. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! 0000098546 00000 n Cross), Give Me Liberty! In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. The travel-time graph 0000007783 00000 n The earthquake occurred somewhere along that circle. Many updates and improvements! aqmd. 0000001746 00000 n (Grades 6 - 8). 17 Station St., Ste 3 Brookline, MA 02445. Swaves arrive at the seismic station after the Pwaves. Also called seismometer. 0000001604 00000 n 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. Choose an answer and hit 'next'. !5(~q* Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. 0000003855 00000 n Epicenter. 0000004060 00000 n 0000103591 00000 n They make a model of a seismographa measuring device that records an earthquake on a seismogram. What types of engineers might use this data the most? technology, engineering or math (STEM) educational standards. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for Station 2. 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. Seismic stations detect earthquakes by the tracings made on seismographs. Have students click on the Earthquakes Living Lab hyperlink in the top left in the earthquakes section. 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. Virtual Earthquake (tutorial/simulation) 1996. hbbd``b`$C`q9 X_$_g`bdxc`X epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. Make an overhead copy of each of the handouts. American Geosciences Institute. Pwaves have the greatest velocity and reach the, seismic station first. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer. Do limits exist on what science can predict? *The NGSS logo is a registered trademark of WestEd. EARTHQUAKES: Epicenter Determination and Seismic Waves First locate and mark the three seismic stations on the world map provided below. lag time. Add to Library. In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. Use the process of triangulation to locate an earthquake's epicenter. 0000008845 00000 n minutes and P waves 8 minutes to Thanks for your feedback! After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science, 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. Answer the following questions in the spaces provided. %PDF-1.4 %