Earthquakes and volcanoes 1 sciencematters finding the epicenter lesson concept the epicenter of earthquakes can be determined by triangulation using the difference in arrival times of p and s waves. Distance of the earthquake from each seismic station is determined using the time difference between the arrivals of the primary p and secondary s waves from the earthquake. Earthquakes everything you need to teach a unit on earthquake origins, characteristics, seismic waves, and triangulating the epicenter of earthquakes. The guide contains links to totle introduction to plate tectonics and earthquakes teaching resources and a table of contents of teaching resources on this topic. Earthquakes and tsunamis extreme weather never fails to excite, and these are earthshaking. Students are taught how earthquakes are located and where earthquakes occur on earth. Explain that the stress within the crust of the earth causes the earth to relieve itself in the form of earthquakes and volcanoes. The longer distance the waves travel, the more ahead the faster kind gets. However, when you understand what causes earthquakes and how very frequent they actually are, children can begin to set aside their fear and discover some of the many wonders of the earth and geology. Work in pairs sharing one computer with internet access.
Free download re s o u r c e s fe at u r e d in t h e plate te c t o nci po w e r poni t. To use seismic data and an interactive simulation to triangulate the location and measure the magnitude of an earthquake. Epicenter is the point where the earthquake occurs directly above the focus point. They explain how this method is used by scientists to. Plastic strain occurs when stress is applied to an object, and it becomes deformed. This section contains 16 worksheets about earthquakes which can be helpful to both you and your students. Tell the class that earthquakes can occur without volcanoes, but volcanoes are always accompanied by earthquakes. This guide is an outline of the plate tectonic and earthquake seismology powerpoint presentations. An earthquake is what happens when two blocks of the earth suddenly slip past one another. Plate tectonics and earthquakes the distribution and properties of plates and the motions at different kinds of plate boundaries explain globalscale patterns of earthquakes and volcanoes.
Students use real seismograms to determine the arrival. A comprehensive range of earthquake worksheets to support 12 different earthquake activities to help learning all about earthquakes. Triangulating earthquake locations online a onepage document. An instrument used to detect and record earthquakes. To understand plate tectonic processes and hazards, and to better understand where future earthquakes are likely to occur, it is important to locate earthquakes as they occur. Displaying all worksheets related to finding an epicenter. This energy release results in waves traveling through the rock, which geologists use to locate earthquakes. Triangulation in practice planned 353 actual study phase contact with sponsor conceptualization instrument development sampling pretesting and revision data collection data analysis reporting utilization q team iteam qteom iteam figure 1. Use your travel time curve to determine the distance to epicenter for each cityearthquake. Many small earthquakes also occur within the volcanoes on the map. Elastic strain happens when an object is deformed, and then when the stress. Folded rocks have been subjected to a plastic strain. Locating the epicenter of an earthquake notes this is a seismograph taken from a seismometer p waves reach the seismometer at a specific location first then follow the s waves. Analyze the seismogram below and fill out the missing information for station 3 in the data table.
A pdf guide to plate tectonics and earthquakes is also available. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Locating earthquakes using latitude and longitude, tohoku 2011 fact file, earthquake crossword, earthquake vocabulary. Finding epicenters and measuring magnitudes worksheet. This is a combination pack made up of two of my best labs for use during a plate tectonics earthquake unit. Each link in the webquest points to information that your students need to complete the worksheet. Activityearthquake location cascadia earthscope earthquake. Refer to the data table and use the difference in arrival times to determine the distance to the earthquake epicenter for station 2.
The diagram of plate movements shows the correspondence between earthquakes and rising magma, as well as earthquakes caused by plate motion alone. Besides printing the worksheets, no other prep is needed to conduct this natural disasters lesson on earthquakes and tsun. Triangulation is a way of determining somethings location using the locations of other things. Finding epicenters and measuring magnitudes worksheet teach. The surface where they slip is called the fault or fault plane. Each lesson plan follows the 5e model and provides you with the exact tools to teach the concept. Introduction to plate tectonics and earthquakes lesson plans. Finding epicenters and measuring magnitudes activityworksheet 1 finding epicenters and measuring magnitudes worksheet objective. These science passages, causeandeffect texts, graphic organizers, charts, earthquake worksheets, and content area vocabularybuilding activities are sure to engage your learners. This is a lab to help students explore the triangulation method used to determine earthquake epicenters. Observable phenomena are used to determine the intensity of earthquakes using the mercalli scale. Earthquake location regional triangulation with real data. This quizworksheet combo will help test your understanding of. On a map, circles are drawn around each seismic station.
Earthquakes can be extraordinarily frightening for both children and adults alike. Many earth science textbooks contain a description of earthquake location by triangulation from three seismic stations. Triangulation is a method that uses distance information determined from 3 seismic stations to uniquely locate the earthquake. Worksheets are finding epicenters and measuring magnitudes work, locating the epicenter of an earthquake, regents earth science name plotting epicenter work, finding the epicenter, lecture 3 activity locating an earthquake epicenter, skill 28 c finding an earthquake epicenter, earth science regents, example answers. It is commonly used by geologists to find the locations of earthquakes, and is also used to determine spacecraft location.
An earthquake is the sudden release of energy due very large pieces of rock moving around and against each other. The location below the earths surface where the earthquake starts is called the hypocenter, and the. On their worksheet, have the students trace the words. Scientists use a variety of methods to determine the location of the epicenter of an earthquake. Note that the moving plates cause both earthquakes and volcanoes in the first place. Discover convection currents and how they explain the movement of earths plates. If a place feels both kinds of earthquake waves, it can figure out how far away the center of the earthquake was. Seismographs determine the magnitude of an earthquake by measuring its force and duration. Find out about some earthquakes of the past, and learn what to do if an earthquake happens. When the plates of earths crust move, energy stored between these plates are released in the form of seismic waves earthquake. In this activity students use threecomponent seismic data from recent earthquakes to locate a global earthquake.
Distribute h1ac finding the epicenter and ask partners to discuss how the data table on h1b might be used to find the epicenter. In this lesson students will learn how to determine the distance of an earthquake from seismic stations using the difference in primary and secondary waves from the earthquake. Students use triangulation method to locate meteorite landing site on the map. I use a ed worksheet which also shows the parts of an earthquake such as focus and epicenter, and illustrates the three main waves. Explore 20 minutes the epicenter of earthquakes can be determined by triangulation using the difference in arrival times of p and s waves. Earthquakes can occur at any point on the circle, however, when three separate circles are drawn, the circles will intersect at one point, which represents the epicenter of the earthquake. Triangulation requires seismic information from three. Fault that makes california an area of high risk for earthquakes. The data below shows the p and swave arrival time difference determined from seismograms from three different cities, for three different earthquake events. Lesson concept the epicenter of earthquakes can be determined by triangulation using the difference in arrival times of p and s waves. In this earth science activity, students participate in a meteorite treasure hunt set up by the teacher.
There are several ways to use triangulation to figure out location. This is not an activity from the ceetep workshop, but is. Use acrobat guide to plate tectonics and earthquakes reader. The difference is p and s waves determine the distance from the epicenter. To figure out just where that earthquake happened, you need to look at your seismogram and you need to know what at least two other seismographs recorded for the same earthquake. Earthguide 20072008 earthguide at scripps institution of oceanography. Earthquakes from the link above, color in each state with the appropriate color from your key in order to represent how many earthquakes of magnitude 3. Teacher workbooks school of information technology. K2 34 56 sand and box demonstration of earthquakes ocks gelatin simulation of earthquakes stick simulation of earthquakes fault action game map scales to measure distances ocabulary development of earthquake s original earthquake. The radius of the circle are scaled to the estimated distance from the station to the earthquake. The earthquakes and tsunamis webquest comes with a worksheet and an answer key. In order to practice triangulation we will use data from three separate earthquakes and locate three epicenters.
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