Mb=body-wave (similar to above) Ms=surface wave (wave periods of 20s measured anywhere on globe Mo=seismic moment Mw= moment magnitude The Richter scale Steps: 1. The two main types of waves are body waves and surface waves. Waves generated by an earthquake are called seismic waves. This resource includes 31 slides; - Mechanical WAVES; - Spring waves - Water waves - Sound waves - Sound revision - Seismic waves (Earthquake etc.) Module 2 The Earth’s Interior Pre-Assessment I. The seismic wave speed of a material depends mainly its upon: Temperature. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. View 12 - Pre-Assessment and Seismic Waves.pptx from SCITECS 2018-2019 at Asia Pacific College. Career Account web sites will be available during this window, but applications that use a database (such as WordPress or phpBB) will not work correctly. Many Earth tremors are of such low magnitude they are not noticed by us. Both types of body waves are non-dispersive (in purely elastic media). Different components of the seismic record may be used, including traveltimes, amplitudes, waveform spectra, full waveforms or the entire wavefield. Seismic Waves CH 8.2 NCSCoS 2.04 * Imagine two railroad trains leaving the station at the same time on parallel tracks and traveling at different speeds. 3 9 customer reviews. elastic waves, because they deform the Earth elastically - the rock returns to its original shape and position after the seismic wave passes through. Though they arrive after body waves, it is surface waves that are almost entirely responsible for the damage … Body Waves P Waves (compression wave) The first kind of body wave is the P wave or primary wave. Seismic waves lesson plans and worksheets from thousands of teacher-reviewed resources to help you inspire students learning. This is the fastest kind of seismic wave. The first set of waves are called P-waves or primary waves. C 9. Types `Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. About 1 results (6.47 milliseconds) Sponsored Links. A 8. They are the energy that travels through the earth and recorded on seismographs. Seismic waves powerpoint. These waves are of a higher frequency than surface waves. Prepared By: Mark Luwen Borigas %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������� Earthquakes. The Career Account database server will be down on Saturday December 19 from 4pm to 10pm. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. ��I7p߳e��� �_�� ��o�s��LJ��z�b+�7�[�\+���'p��YE���>Ң���ĩ��x����,�|K��S�il�$�n�C&��. When this happens, waves of energy are released and if strong enough, cause the surface of the Earth to tremble noticibly. Seismic waves are also of these two types. Progressive seismic waves propagate away from seismic sources. PPT | High-resolution; In addition to body waves, earthquakes also generate surface waves, typically Rayleigh (R) waves. No public clipboards found for this slide. A 6. • Cause rock particles to vibrate in the same direction of waves • Fastest, first detected • Travel through solids and liquids • Seismologist use seismic waves to model convection currents in the mantle. There are several different kinds of seismic waves, and they all move in PPT. Seismic Waves Seismic waves can follow slightly different paths (labeled PKPAB, PKPBC) and still arrive at about the same time. Many earthquakes happen at the borders of tectonic plates. shock wave. It includes the lesson aims (for several lessons) and 17 slides of the effects of earthquakes, types of wave, the Richter scale, how the waves travel through the body of the earth, seismograph trace and map showing the triangulation of the … The study of earthquake waves, seismology, dates back almost 2000 years to the Chinese. Earth structure from seismic waves. Records the movement of Earth in relation to a stationary mass on a rotating drum or magnetic tape �����%2F�?�k⏆?�|�&���QK���-��. The study of seismic waves provides evidence for the internal structure of the Earth, which otherwise cannot be observed directly. Three Seismic Waves Energy released at the hypocenters of earthquakes travel as three different types of waves. Composition. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Displaying Powerpoint Presentation on what are seismic waves available to view or download. In these lecture notes, we shall deal only with this type of waves. �.�(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(�3���+� ž�=������ө%�����}�������Ǖ�c�^9���ڏƚ4+�x��|�n���,b��Y&3����H�M� � �!�����\�7�~3|b�DŽ5_i�������z���wx. �� � w !1AQaq"2�B���� #3R�br� Clipping is a handy way to collect important slides you want to go back to later. Grade 10 - Generosity. Elastic Waves. See our User Agreement and Privacy Policy. Waves and wave motion From the diagram we can see that: The distance between two consecutives nodes is /2 The distance between two consecutive antinodes is /2 The distance between an anti-node and the next node is /4 The Doppler effect is the apparent change in frequency of a wave due to the motion of the source or the observer. Richter scale) - based on amplitude of waves with 1s period within 600 km of epicentre. Now customize the name of a clipboard to store your clips. A 5. Present students with the following information, aligned to the slides of the attached PowerPoint file. Seismic waves are also called . Pressure. 1. Looks like you’ve clipped this slide to already. D 2. See our Privacy Policy and User Agreement for details. An example of a non-elastic wave is a . If you continue browsing the site, you agree to the use of cookies on this website. Measure the interval (in … Body waves can travel – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7ef08e-Y2E4M EVIL MATHS II If a seismic wave travels through an interface, it is similar to a ray of light passing through different media = wave refraction. R waves moving along a stress-free boundary like Earth’s surface induce both horizontal and vertical shaking at the surface. Surface waves(L-Waves) - are of a lower frequency than body waves, and are easily distinguished on a seismogram as a result. Characteristics of each seismic waves. "$"$�� C�� ,G" �� `Types Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. RESULTS FROM SURFACE WAVE DISPERSION Surface wave dispersion: seismic surface waves of both Rayleigh and Love type, are dispersive; that is, their speed of propagation depends on their wavelength. CrystalGraphics brings you the world's biggest & best collection of seismic waves PowerPoint templates. In other words, the speed of propagation is … If you continue browsing the site, you agree to the use of cookies on this website. A 7. Presentation Summary : They … Download what are seismic waves PPT for free. The two major types are body waves (S and P waves) and surface waves. Free + Easy to edit + Professional + Lots backgrounds. ... A colorful and comprehensive PowerPoint highlights this lesson on waves. �� � } !1AQa"q2���#B��R��$3br� what are seismic waves Powerpoint Presentation . S waves travel slower polarized such that mantle; ~ 2.5-3.0 than P waves in a solid and, particle motion is in km/s in (solid) therefore, arrive after the P wave.