vertical or horizontal inner core planes Characteristics of Seismic Waves L, Love, Transverse horizontal VL ~ 2.0 - 4.5 km/s Love waves exist because of the Surface waves, motion, perpendicular to in the Earth Earths surface. B 10. B 4. Module 2 The Earth’s Interior Pre-Assessment I. A 5. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on - id: 6fea40-ODU3M The study of earthquake waves, seismology, dates back almost 2000 years to the Chinese. Though they arrive after body waves, it is surface waves that are almost entirely responsible for the damage … Looks like you’ve clipped this slide to already. Richter scale) - based on amplitude of waves with 1s period within 600 km of epicentre. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Progressive seismic waves propagate away from seismic sources. 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. This resource includes 31 slides; - Mechanical WAVES; - Spring waves - Water waves - Sound waves - Sound revision - Seismic waves (Earthquake etc.) �� � } !1AQa"q2���#B��R��$3br� Clipping is a handy way to collect important slides you want to go back to later. D 2. 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. A 6. Hand out the attached Engineering & Waves: Seismic Waves PPT Worksheet to aid in note-taking and help students be accountable for the information provided in the presentation. what are seismic waves Powerpoint Presentation . �����%2F�?�k⏆?�|�&���QK���-��. About 1 results (6.47 milliseconds) Sponsored Links. Types `Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. Composition. Three Seismic Waves Energy released at the hypocenters of earthquakes travel as three different types of waves. Seismographs are instruments that record seismic waves. Elastic Waves. Displaying Powerpoint Presentation on what are seismic waves available to view or download. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on - id: 7ef08e-Y2E4M A 7. Prepared By: Mark Luwen Borigas Author: Created by alisoncam. Both types of body waves are non-dispersive (in purely elastic media). Measure the interval (in … 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 Career Account database server will be down on Saturday December 19 from 4pm to 10pm. See our User Agreement and Privacy Policy. There are several different kinds of seismic waves, and they all move in PPT. Body Waves P Waves (compression wave) The first kind of body wave is the P wave or primary wave. $4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�������������������������������������������������������������������������� ? CrystalGraphics brings you the world's biggest & best collection of seismic waves PowerPoint templates. Preview. Many Earth tremors are of such low magnitude they are not noticed by us. Presentation Title: What Are Seismic Waves? Download Seismic PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. Seismic waves are also of these two types. Seismic waves can follow slightly different paths (labeled PKPAB, PKPBC) and still arrive at about the same time. Seismic waves lesson plans and worksheets from thousands of teacher-reviewed resources to help you inspire students learning. If you continue browsing the site, you agree to the use of cookies on this website. Junior geophysicists pretend that they are hired to analyze seismic waves. You can think of these waves by picturing the ripples created when a stone is thrown into a puddle or lake. - Tsunami - Electromagnetic WAVES; - Applications of EMW - Longitudinal Waves - Transverse Waves - REFRACTION of Waves - DIFFRACTION of Waves Everything is ready to be used or easily edited to suit your learners. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������� At such an interface, the energy within an incident seismic wave is partitioned into transmitted and reflected waves. (slide 1; title slide) Ocean waves and surface waves both propagate from disturbances. 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. They are caused when rock breaks or is deformed. 3 9 customer reviews. C 9. How Earthquake Waves Provide Information about the Interior of the Earth Seismic ` Waves These are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. PPT | High-resolution; In addition to body waves, earthquakes also generate surface waves, typically Rayleigh (R) waves. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth. Surface waves(L-Waves) - are of a lower frequency than body waves, and are easily distinguished on a seismogram as a result. 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. The second ones are called S-waves or secondary waves. 1. Earthquakes generate four principal types of elastic waves; two, known as body waves, travel within the Earth, whereas the other two, called surface waves, travel along its surface. Characteristics of each seismic waves. There is a large amount of geologic activity and movement along the borders of these plates. Seismic waves powerpoint. 1. Created: Mar 3, 2007 | Updated: Feb 22, 2018. Grade 10 - Generosity. Seismic Records the movement of Earth in relation to a stationary mass on a rotating drum or magnetic tape The two main types of waves are body waves and surface waves. `Types Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. Different components of the seismic record may be used, including traveltimes, amplitudes, waveform spectra, full waveforms or the entire wavefield. In physics, waves are usually divided into progressive and standing waves. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. ��I7p߳e��� �_�� ��o�s��LJ��z�b+�7�[�\+���'p��YE���>Ң���ĩ��x����,�|K��S�il�$�n�C&��. Database Downtime. P- and S-waves are referred to as body waves because they are transmitted through the volume (or body) of the material, as apposed to travelling along the surface. ��ࡱ� > �� � ���� ) { ( ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������F� ����=s�I����{�E����� JFIF ,, �� C ! ... A colorful and comprehensive PowerPoint highlights this lesson on waves. Seismic wave, vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface. Many earthquakes happen at the borders of tectonic plates. �.�(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(�3���+� ž�=������ө%�����}�������Ǖ�c�^9���ڏƚ4+�x��|�n���,b��Y&3����H�M� � �!�����\�7�~3|b�DŽ5_i�������z���wx. The Seismic Wave Equation Using the stress and strain theory developed in the previous chapter, we now con-struct and solve the seismic wave equation for elastic wave propagation in a uniform whole space. A 8. The first set of waves are called P-waves or primary waves. The prefix comes from the ancient Greek word ”seismos” which means “to shake”. Seismic waves are mechanical vibrations that occur inside the Earth. When this happens, waves of energy are released and if strong enough, cause the surface of the Earth to tremble noticibly. No public clipboards found for this slide. These waves are of a higher frequency than surface waves. The two major types are body waves (S and P waves) and surface waves. Free + Easy to edit + Professional + Lots backgrounds. The study of seismic waves provides evidence for the internal structure of the Earth, which otherwise cannot be observed directly. Earthquakes. Seismic Waves An example of a non-elastic wave is a . 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. If you continue browsing the site, you agree to the use of cookies on this website. Present students with the following information, aligned to the slides of the attached PowerPoint file. Now customize the name of a clipboard to store your clips. �� � w !1AQaq"2�B���� #3R�br� View 12 - Pre-Assessment and Seismic Waves.pptx from SCITECS 2018-2019 at Asia Pacific College. Seismic Waves. Pressure. "$"$�� C�� ,G" �� In these lecture notes, we shall deal only with this type of waves. Reflection and Transmission of seismic waves in layered media At an interface between two rock layers there is generally a change in propagation velocity resulting from difference in physical properties of the two layers. Seismic waves tend to slow down as they travel through hot material. Types of Seismic Waves Seismic waves carry energy from an earthquake away from the focus, through Earth s interior, and across the surface. R waves moving along a stress-free boundary like Earth’s surface induce both horizontal and vertical shaking at the surface. There Are Different Types Of Seismic Waves Based On The Movement 247153 PPT Presentation Summary : There are different types of seismic waves based on the movement. • 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. This is the fastest kind of seismic wave. Body waves can travel Download what are seismic waves PPT for free. Earth structure from seismic waves. The seismic wave speed of a material depends mainly its upon: Temperature. elastic waves, because they deform the Earth elastically - the rock returns to its original shape and position after the seismic wave passes through. shock wave. You can change your ad preferences anytime. Body waves(P and S-waves) Surface waves(Love and Rayleigh waves) Can be download for class presentation. B 3. Styles of faulting Seismic wave forms Earthquake magnitude: scales based on seismograms ML=local (e.g. (Va�6�#U�Y���p͐ L���W��!�x�D�Ͱ���,��L�c}����V �2�ڸ[���X�і�5OMn������h�RE�&v��A�t��IE;v�F��?�|8�G��2���>)�B�c/$�+*璪d*�H���n��w��|]�a��еskv"��sv��V"���H�T�����B�Q� xgP��������9��ε2��7��Lv) ����t�7�K_�����gew%܆ڡ#~�ĝ� G��0�n�*�����Ʃ5�^��ok&ne��s���Z���v�@7,y*w��(�������l&��[�MX�ә#Ԟ���͏�cs������ٖ��Z���aw�i�ٗ��G%՗��}�VP^/1x}�J�dU������᭿�;]K���n�8�֗M�E�W��P8���F�i%Ub! Seismic waves are also called . 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. Waves generated by an earthquake are called seismic waves. See our Privacy Policy and User Agreement for details. Presentation Summary : They … They are the energy that travels through the earth and recorded on seismographs. In other words, the speed of propagation is … 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.

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