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Hand out the worksheets to the groups and direct them to read through the instructions. Notify the classroom teacher of technology needs (overhead projector). 0000003254 00000 n
Then do the same for the S-wave. Even though the scale formulae are different, MMS retains the familiar continuum of magnitude values defined by the older scale. What about P waves? They make a model of a seismographa measuring device that records an earthquake on a seismogram. Collect any giveaways for the students, such as earthquake posters or plate tectonic fliers. 0000002250 00000 n
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This page titled 13.4: Locating an Earthquake Epicenter is shared under a CC BY-SA license and was authored, remixed, and/or curated by Deline, Harris & Tefend (GALILEO Open Learning Materials) . In this activity, the epicenter of the earthquake is in the center of Los Angeles, CA. time for any point that is 3,000 miles 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. Using the real-world data in the living lab enables students and teachers to practice analyzing data to solve problems and answer questions, in much the same way that scientists and engineers do every day. Copyright 2023. 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. Free K-12 standards-aligned STEM curriculum for educators everywhere. earthquake. The answer is the San Andreas Fault. Answer Key: Lab 5 Earthquakes - Find People, Locating Earthquake Epicenters | CK-12 Foundation, Earthquake Station - Regents Earth Science, Locating Earthquakes Teaching Resources - TPT, Locating An Epicenter Teaching Resources - TPT, How To Find The Epicenter Of An Earthquake - YouTube, Locating The Epicenter Of An Earthquake Worksheet, Locating An Earthquake Epicenter Worksheet Answers, glencoe responsible driving chapter 2 answers, pnp neuro psychiatric exam sample questions, quais tipos de drogas sao detectadas no exame toxicologico, centro de apoio diagnostico resultado de exames, locating earthquake epicenter worksheet answer key, exame pcr covid para viagem internacional, quantos dias pra sair o resultado do exame de covid, du ma political science entrance exam syllabus 2023, earth and life science grade 11 module 4 genetic engineering answer key, go math grade 5 chapter 11 lesson 11.9 answer key, civil service examination in the philippines. How does the Mad Scientist. 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. Short for "secondary wave" or "shear wave." 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. After reading about earthquakes, open a new window to an Earthquake Simulator at, Follow the simulation instructions. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. These distances are determined using a travel-time curve, which is a graph of Pand S-wave arrival times (see Figure 13.11). It is slower than the same earthquake's P wave and cannot travel through liquids. Civilization and its Discontents (Sigmund Freud), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Psychology (David G. Myers; C. Nathan DeWall), The Methodology of the Social Sciences (Max Weber), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. U.S. Geological Survey, U.S. Department of the Interior. First, determine the P-wave arrival, and read down to the bottom of the seismogram to note at what time (usually marked in seconds) that the P-wave arrived. The longer the time is between the P-and S-wave . *The NGSS logo is a registered trademark of WestEd. The hypocenter is the point within the earth where an earthquake rupture starts. Finding the Epicenter. to the lag time measured at this location? Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter. Earthquakes Living Lab: Finding Epicenters & Measuring Magnitudes. Draw your signature, type it, upload its image, or use your mobile device as a signature pad. 0000007097 00000 n
travel time for P waves. 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. Locating the Epicenter of an Earthquake - SE Asia a foldable activity, slide presentation to guide reading, and an answer key! 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. Direct students to finish the activity by completing the. 0000007783 00000 n
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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. 107 0 obj
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Using historical seismographs, engineers forecast the strength or magnitude of earthquakes and make predictions and determine building codes and safety protocols. Upload a document. Practicing this technique, the students work several problems on a map of the US. Earthquakes and Seismic Waves Key Concepts . The point where your ruler crosses the middle line on the chart marks the magnitude (strength) of the earthquake. 0000002658 00000 n
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." 0000009174 00000 n
The three seismograms in this activity are unfi ltered station records from a single event that occurred on August 1, 1999.
Identify P, S, and surface waves on seismograms, Measure amplitude and lag time on seismograms, Use triangulation to accurately locate the epicenter of an earthquake, Accurately report the latitude and longitude of the epicenter, Sea Floor Lab Help with Problem 2 - Tagged, Metamorphic Rocks Lab Instructions - Tagged, Lab exam 2 - Study guide for the second exam regarding all the labs and material covered, Redaccion de textos II Marco n membrete es aquello que se ubica en el sector superior de una pgina, mencionando el ttulo o el nombre de un individuo, una empresa, etc. PDF. How far do S waves travel in 5 Use mathematical representations of phenomena or design solutions to describe and/or support claims and/or explanations. What is the time lag for the Seattle, Washington, seismic station? 3. epicenter - the point on Earth's surface directly above the focus, or origin, of an earthquake. Student exploration Graphing Skills SE Key Gizmos Explore Learning. In order to determine the location of an earthquake epicenter, seismographs from at least three different places are needed for a particular event. 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. Encourage them to explore all of the Earthquakes Living Lab as they complete the worksheet. The earthquake occurred somewhere along that circle. earthquake though). within type by subtype, then by grade, etc. 01. A. Seismic waves-waves generated by an earthquake, can move the ground forward and back- answers the question. earthquake - shaking and vibration of Earth's surface. Great exercise for Regents Earth Science. 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. Mr Gneiss. To abbreviate, use the symbol M (a capital M, plain text, no sub/superscripts) expressed to the nearest 0.1. Quick Tips. A.45 seconds B.50 seconds C.55 seconds D.65 seconds Answer Key: D 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. Another method of locating an earthquake is to use the P-wave arrival-time minus origin-time (P - O) interval instead of distance. As discussed earlier in this lesson, this method of determining the epicenter of an . 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. Please answer the following questions using the earthquake video shake, shake, shake. The seismometers are shown as green dots. 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 . Seismic stations detect earthquakes by the tracings made on seismographs. 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. 0000055643 00000 n
Describe the logarithmic nature of the earthquake magnitude scale. Video Guide / Worksheets and Quizzes for Quizzes and Answer Sheet __ 2. Use this information to complete the following. Finding the Epicenter Determine the epicenter distance from three different seismographs. 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. 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. It's a logarithmic scale from 1 to 10 with each succeeding level representing 10 times as much energy as the last. Make arrangements so that each student group has a computer with Internet access. 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 the U.S., earthquake measurements under the MMS (those of magnitude 3.5 or higher) are still commonly erroneously referred to by the general public and media as being on the Richter scale, due to more familiarity with the Richter scale. 3000 miles. 0000005081 00000 n
located 1,000 miles from the long will it take, to the nearest 0. minutes, for the first P waves to travel from the epicenter to your station? Seismograms How is the magnitude of an earthquake determined? This worksheet focuses on using the p and s graph to find different variables. Since the 1970s, the use of the Richter magnitude scale has largely been replaced in the scientific community by the moment magnitude scale (MMS). Click for facts and worksheets in PDF! Use this information to complete the following. 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. Dochub is the best editor for changing your documents online. Finding the epicenter worksheet answer key. /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$II'y ??O's^3@[{*{VT?nsNS!ilq]mFO?? Thanks for your feedback! A circle is drawn from each of the three different seismograph locations, where the radius of each circle is equal to the distance from that station to the epicenter. If a quake is far from the seismograph, the P-waves arrive long before the S-waves. 0000001562 00000 n
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They use three seismographs in a process called triangulation to determine earthquake epicenters. Objective Use data from seismograms to locate the epicenters of earthquakes. Using this resource students find the arrival times of P-waves and S-waves using a seismogram. Great-circle arcs are drawn on the globe using the distance of the earthquake to the station as a radius. surface wave? Record your answer from Lab Exercise #2, Step 1. Find 23 millimeters on the right side of the chart and mark that point. Then locate and click the link in the center of the page under the question: "How is an earthquake epicenter located and how is magnitude determined?" 4. (Figure 3):. The farther a station is from the 12), Analyze and interpret data about natural hazards using direct and indirect evidence
Privacy Policy, Seismograms from seismic stations in Fresno, CA, Phoenix, AZ, and Las Vegas, NV, A modified travel time curve for S-P wave, A Modified Travel Time Curve for S-P Wave. What are those limits? P and Swaves are body waves and travelthrough the interior of the earth. The travel-time graph In order to determine the location of an earthquake epicenter, seismographsfrom at least three different places are needed for a particular event. Of the four Earthquakes Living Lab seismic areas, choose the "Chile" box, as shown in Figure 3. hWmo9+[+UH EkNB|6YiaVJ=cRh7{T1R,5LI1$K=s)XR&87@&$LTPLutlcyNuzjf--\?qaXZM&HM.Eg"HnTqSWqN0&~2kf0
Md|d&:zhe)7I? Geology Labs On-Line, Department of Geological Sciences, California State University, Los Angeles, CA. 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. In Figure 13.9, there is an example seismogram from a station that includes a minor earthquake. Locating The Epicenter Of An Earthquake Worksheet Answers, Content Outline Earthquakes For Teaching - Mrs. Parsiola's Homepage, Earthquakes & Volcanoes Test Review Answers, Earthquake Facts & Worksheets | Mechanism, Impact, Events, Quiz & Worksheet - Causes Of Earthquakes - Study.com, 15 Bill Nye - Earthquakes Worksheet Key | PDF - Scribd, Bill Nye-The Science Guy * - Biloxi Public Schools, psc plus two level preliminary exam syllabus pdf 2023, first tuesday real estate principles exam answers, ies exam pattern for mechanical engineering, resultados examen practico dgt las palmas, exame de sangue precisa de quanto tempo de jejum, sslc question paper 2023 karnataka pdf with answers social science, examen de formacion civica y etica tercer grado secundaria, ctet exam date 2023 application form last date, why is it important to do self breast exams, quanto tempo depois de infectado pelo hiv aparece no exame. inch = 500 km. Looking at the nomogram, students click on each location data point to see where the three lines intersect to read the estimated magnitude. The distance to the earthquake epicenter is then determined using the "Earthquake P-Wave and S-Wave Travel Time" graph. 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. Mark the first arrival of the swave on each seismogram. Focus. How does the lag time change as you get farther and Do you agree with this alignment? 3. : 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.
However, please review it for the specific setting, materials, students, and conventional safety precautions. Make changes to the sample. As the drum rotated, the 9 -
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One seismogram indicates the distance to the epicenter. triangulation: A method to determine exactly where an earthquake originates. The farther away the epicenter is, the greater the difference . =Cv :~4yrXP 62{_,*Uq/O-oUNBr-$y~:G},#3e^CS6U*_zVGY7ZNUWk2f?? {%!,"{u5E&OOqA_"/uxn-kx+Vz*EQb)Q 0000000856 00000 n
4. fault - a fracture in Earth's crust where the rocks on either side have moved. S wave: The second seismic wave of an earthquake. It travels faster than the same earthquake's S wave (almost double the speed) and is similar to sound waves. Ask students what fault they think caused this earthquake. The vertical lines, spaced one, minute apart, represent the passage of time, (from left to right). between arrival of P and S waves is called Many updates and improvements! In this 1-to-10 logarithmic scale, each succeeding level representing 10 times as much energy as the last. $8.25. For example, the western United States has earthquakes more frequently and on a larger scale than the eastern part of the country. Activity4:LocatinganEarthquakeEpicenter Objectives:Ifyoucompletealltheproblems,youshouldbeableto: Identif Accessed December 11, 2013. http://en.wikipedia.org/wiki/Moment_magnitude_scale, Novak, Gary. 0000002009 00000 n
The, amount of time that passes between the Pwave arrival and the Swave arrival is. (Listen to student ideas.) 0000001408 00000 n
In the ASN, standards are hierarchically structured: first by source; e.g., by state; within source by type; e.g., science or mathematics;
The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and . hb```b````e``n`d@ A
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vILZ*|%6mD! You learned that seismologists determine the distance to the earthquake epicenter using the difference between S and P wave arrival times. What types of engineers might use this data the most? H\0y The spot where those three circles intersect is the epicenter (Figure 13.12). Pwaves have the greatest velocity and reach theseismic station first. ?t?s=Yt '_(
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(Source: USGS, Wikipedia). earthquake lab lab: locating the epicenters of earthquakes objective measurable learning outcomes use data from seismograms to locate the epicenters of Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew My Library Discovery Institutions Western Governors University Southern New Hampshire University 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. 11 minutes elapsed between the first P wave and the last measurable surface wave. 0000031066 00000 n
Success is figuring out that the epicenter is just off the coast of Chile, where the three circles intersect. It takes S waves 14. locate and label the epicenter of the earthquake on this map. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. important in helping seismologists determine the epicenter of the earthquake. from the epicenter will be 14 8. 0000008088 00000 n
The process is called triangulation. 0000003991 00000 n
What data is used to determine magnitude? Key Facts & Information. While earthquake locations are normally done with a computer that can quickly determine the paths of seismic waves through the Earth to many seismic stations, 15 Introduction to Geology Chapter Worksheet . Scientists use triangulation to find the epicenter of an earthquake. 0000006984 00000 n
One seismogram indicates the distance to the epicenter. The epicenter is the point directly above it at the surface of the Earth. You will analyze the records and locate the earthquake using a method known xb``d``Id`a`Ab@_ :iWGi>|q` 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. 0000008845 00000 n
What was the lag time (in minutes) at this location? We have answers to the most popular questions from our customers. 0000106240 00000 n
This section explains what earthquakes and faults are and what causes earthquakes. The USGS now uses the MMS to estimate magnitudes for all modern large earthquakes. approximate period of the surface waves in seconds? 5. focus - the point within Earth where an earthquake originates. (, Have any of you ever experienced an earthquake or know anyone who has? Conclude the activity with a class discussion (and perhaps homework questions) to share ideas and answers, as described in the Assessment section. Once three seismographs have been located, find the time interval between the arrival of the P-wave . The period of a wave is the time between two adjacent wave peaks. 61 0 obj
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Why might the triangulation method not always produce an exact point (other than your measurement errors)? Nov 2, 2020 Triangulation is used to determine the location 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. Explains how to find an earthquake epicenter using at least three seismograph stations. Shear wave from earthquake, moving slower than primary waves, through solid material only. approximate period of the surface waves in seconds? Use Figure 4.5 and the travel-time graph in Figure 4.4 to determine the distance between each station and THREE SEISMOGRAMS the epicenter. Figure 1 is a simplified example of a m>r/Q[6 Based on your answers to the previous question, what is the lag time for locations that are 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. If a quake is near the seismograph, the S-waves arrive shortly after the P-waves. What is an earthquake? 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. As the drum rotated, t, pen recorded the arrival of P, S, and surface, between arrival of P and S waves is called, epicenter, the longer the lag time measured, velocity, amplitude, and frequency of the. After this activity, students should be able to: Each TeachEngineering lesson or activity is correlated to one or more K-12 science,
Also commonly termed the focus. lag time. Earthquakes occur along faults, which are cracks in the Earths crust that build tension. The magnitude is the logarithm of the amplitude of the ground wave. Figure 13.10). Zip. Run through the investigation yourself and record the data, just to see how long it takes. A minimum of three seismic stations is necessary to locate an epicenter. At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. 0000001978 00000 n
When an earthquake strikes, P waves arrive at a seismograph rst and S waves next. minute apart, represent the passage of time 2. Richter magnitude scale: An earthquake measurement scale created in the 1930s to assign a single number to quantify the energy released during earthquakes. 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. Y$Kr;V6[;Dq vg~cx:A[^jCssupwD
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We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. gov For online instructions and current fees click here. All rights reserved. Learn more How Can I Locate the Earthquake Epicenter? Three seismographs are needed. (from left to right). farther from the epicenter of an earthquake? Resources. To complete the activity, some prior . (Grades
Students first triangulate the location of an earthquake's epicenter, then calculate its magnitude. endstream
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What data is used to determine magnitude? earthquakes. distance = travel time for S waves '
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Subject Areas:
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1. Every year, earthquakes cause death and destruction worldwide. Figure 8. Do you think we will someday be able to prevent earthquakes? 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. 0000030504 00000 n
and S waves depends on the distance from the epicenter of the answer the following question. 0000006538 00000 n
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. !D,X2:azTG)kPT~Mj 4>d w@O'. Moment magnitude scale. 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. Where the 3 circles intersect is the approximate location to the epicenter of the earthquake. Material is sheared side to side, perpendicular to the direction of wave propagation. The western U.S. has more faults than the eastern U.S., and therefore the western U.S. has more earthquakes. Fill Locating The Epicenter Of An Earthquake Worksheet Answers, Edit online. Seismic Waves. Locating an Epicenter through Triangulation of Seismic Data- Remote/Hybrid/Live. El trmino tambin puede hacer referencia al ttulo o nombre de alguien a quien se diri, Online Education Strategies (UNIV 1001 - AY2021-T), Advanced Care of the Adult/Older Adult (N566), Advanced Design Studio in Lighting (THET659), Introduction to Health Information Technology (HIM200), Biological Principles II and Lab (BIOL 107/L), PHIL ethics and social responsibility (PHIL 1404), Foundational Concepts & Applications (NR-500), Introduction To Project Management Software (CSBU539), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), BSC 2085-Study Guide - Dr. Alfonso Pino - Online course, Lecture notes, lecture all lectures - lecture notes from professor alan klein, Full Graded Quiz Unit 3 - Selection of my best coursework, EES 150 Lesson 2 Our Restless Planet Structure, Energy, & Change, General Chemistry I - Chapter 1 and 2 Notes, 1-2 Short Answer- Cultural Objects and Their Culture, Historia de la literatura (linea del tiempo), ACCT 2301 Chapter 1 SB - Homework assignment.
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