PDF Example Answers - TeachEngineering Last updated November 26, 2013. If the lag time were measured at a location closer to the epicenter, how would it compare 0000031066 00000 n
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https://geo.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fgeo.libretexts.org%2FLearning_Objects%2FLaboratory%2FBook%253A_Laboratory_Manual_For_Introductory_Geology_(Deline_Harris_and_Tefend)%2F13%253A_Earthquakes%2F13.04%253A_Locating_an_Earthquake_Epicenter, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), status page at https://status.libretexts.org. epicenter: A point on the Earth's surface that is directly above the place where the underground forces of an earthquake originate. Triangulation to Locate an Earthquake By Earthquake Hazards Original Thumbnail Medium Detailed Description Triangulation can be used to locate an earthquake. 0000033429 00000 n
How Can I Locate the Earthquake Epicenter? | Michigan Technological 0000001533 00000 n
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. THREE SEISMOGRAMS Seismogram A - New York, NY 1 minute 1. Legal. 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. Key Facts & Information. For this activity, select the "Chile" box. 0000006984 00000 n
What did it feel like? It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. Share with Classes. (Listen to student ideas.) !5(~q* What about P waves? The point beneath Earth's surface where rock breaks under stress and causes an earthquake. Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. 74 Earthquake Activity: Locating the Epicenter and Time of Earthquake . Yw8SxGk}X3kfTfW& gk`41#'uf7"G\fsN4^8jC7[+%`qFLFKpFc 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. What is an earthquake? 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. Add to Library. /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$II'y ??O's^3@[{*{VT?nsNS!ilq]mFO?? They make a model of a seismographa measuring device that records an earthquake on a seismogram. So the difference in the P- and S-wave arrival times determines the distance between the epicenter and a seismometer.
Figure 2 is a seismic wave travel-time technology, engineering or math (STEM) educational standards. at that station. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. Draw your signature, type it, upload its image, or use your mobile device as a signature pad. hb```b````e``n`d@ A
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vILZ*|%6mD! What is the time lag for the Seattle, Washington, seismic station? Download. Pwaves have the greatest velocity and reach the, seismic station first. within type by subtype, then by grade, etc. Please answer the following questions using the earthquake video shake, shake, shake. minutes = 6 minutes. Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. Epicenter Location on Earth's surface directly above the focus of the earthquake 5. Thus technology use varies from region to region and over time. by. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). HTn0"H@w=s(vxk8OM1px-{$_!o5|CS7RPr#V(0CUa%ZkuT9t};D
Jj=.9,z!#@n5YCu>R88tfFRX=iRK 1. 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. What is the To do this, have the students use, Find the epicenter of the earthquake on the map (. travel time for P waves. As you may know, people have look numerous times for . To complete the activity, some prior . They use three seismographs in a process called triangulation to determine earthquake epicenters. 0000004224 00000 n
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. How does distance from the epicenter affect the magnitude (height) of the seismograph reading? Dochub is the best editor for changing your documents online. consider a seismograph stationed 3, The Earthquakes Living Lab gives students the chance to track earthquakes across the planet and examine where, why and how they are occurring. If less precision is desired, precede M with a tilde, such as "M ~7" or "magnitude ~6.8.". Cross), Give Me Liberty! Type text, add images, blackout confidential details, add comments, highlights and more. https://people.wou.edu/~taylors/gs104/lab5key.pdf Locating Earthquake Epicenters | CK-12 Foundation Apr 8, 2020 . 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. PDF Finding Epicenters Lab Answer Key Lab Pdf As the drum rotated, the When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. time for any point that is 3,000 miles '
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It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. 0000001736 00000 n
(Grades 6 - 8). Follow this simple guide to edit Locating the epicenter of an earthquake worksheet answer key in PDF format online free of charge: Explore all the advantages of our editor right now! 4. What data is used to determine magnitude? Tracings made at three separate seismic stations are needed to locate an earthquake epicenter. Seismic Waves. 0000005081 00000 n
Therefore, the lag If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. The calculated distance from each seismometer to the earthquake is shown as a circle. The longer the time is between the P-and S-wave . Also commonly termed the focus. 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.
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