Earthquake Magnitude Earthquake Severity Richter Magnitude Earthquake Effects Less than 3.5 Generally not felt, but recorded. Browse earthquakes ppt resources on Teachers Pay Teachers, a marketplace trusted by millions of teachers for original educational resources. A geological fault is known as the displacement of plates of their original plane. Earthquake Origin Causes and effects Lab goals In an earthquake, will all parts of a city suffer the same damage? Measuring Earthquakes Ch. When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the … What causes an earthquake? Submitted to : Prof. G.S. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 4. Causes of earthquakes Types of earthquakes Genetic classification of earthquakes Types of earthquakes 1 An S wave is slower than a P wave and can only move through solid rock. Geological Faults. Earthquake in many cases can cause great loss of life. Maximum intensities are indicated on the Modified Mercalli intensity scale and are sourced from United States Geological Survey (USGS) ShakeMap data. The largest fault surfaces on Earth … An earthquake is caused by a sudden slip on a fault. These vibrations pass through the earth’s surface in waves and cause the earthquake. Body Waves S wave (transverse wave) The second type of body wave is the S wave or secondary wave, which is the second wave you feel in an earthquake. This causes building to sink and may cause landslides. Earth was hot when it formed, and has been cooling ever since (near the surface, for each km into Earth, the temperature rises by about 30deg. Earthquakes are the vibrations of part of the earths crust. Requirements: The content should be presented as lecture. Vibrations (earthquakes) occur as the deformed rock “springs back” to its original shape (elastic rebound). However, earthquakes cannot be detected and whenever they occur, they can cause massive damages to property and even kill people. Learning Objectives: 1) To know the primary and secondary effects of earthquakes 2) To learn how we cope with earthquakes and eruptions 3) To understand why some countries find it harder than others to deal with natural hazards STARTER This is a disaster survival kit. Earthquake is a tragedy to life and property. These are smaller earthquakes that happen in the same place before the larger earthquake follows. Tectonic earthquakes: The most common form of earthquakes, is caused by the movement of loose fragmented pieces of land on earth’s crust knowns as tectonic plates. The earthquake was caused by a sudden jolt as the Philippine The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. What causes an earthquake? The windows rattle because the sound waves were pushing and pulling on the window glass much like P waves push and pull on rock. Now customize the name of a clipboard to store your clips. An earthquake is the shaking and vibration of the Earth's crust due to movement of the Earth's plates (plate tectonics). Volcanic activity can cause earthquakes, as can human activities like nuclear explosions carried out underground. Where the crust is being compressed, reverse faulting occurs, in which the hanging-wall block moves up and over the footwall block – reverse slip on a gently inclined plane is referred to as thrust faulting. Slippage at the weakest point (the focus) occurs. Earthquakes are caused by the sudden release of energy within some limited region of the rocks of the Earth. Scientists use seismographs to record earthquakes. This quake, 7.2 on the Richter Scale, was the worst in half and century. View Causes of Earthquakes....6.ppt from SCIENCE 295 at Montclair State University. Here its possible causes , effects and hazards they cause are discussed. ; Volcanic earthquake: The less prevalent compared to the tectonic variety, these earthquakes happen before or after the eruption of a volcano.It is caused when magma leaving the volcano is filled by rocks being pushed to the surface. 1. Landslides, triggered by earthquake, often cause more destruction than the earthquake themselves. • Effects of earthquakes. This has long been apparent from early catalogs of felt earthquakes and is even more readily discernible in modern seismicity maps, which show instrumentally determined epicentres. What we are looking for is key detail to explain what happened, with locations and analysis of how the north east coast of Japan has been affected. This is a list of earthquakes in 2020.Only earthquakes of magnitude 6 or above are included, unless they result in damage and/or casualties, or are notable for other reasons. An earthquake is the shaking and vibration of the Earth's crust due to movement of the Earth's plates (plate tectonics). Physical Causes The earthquake of Kobe at 546am on the 17th January 1995 was caused by the simple matter of the Philippine Plate being forced under the thicker and lighter continental plate the Eurasian. The lecture will be enhanced if the instructor presents … Requirements: The content should be presented as lecture. Can cause major damage … Causes, Effects and Precautions against Earthquake, No public clipboards found for this slide. The main cause is that when tectonic plates, one rides over the other, causing orogeny collide (mountain building), earthquakes. See our Privacy Policy and User Agreement for details. The most common type of earthquake is caused when two different tectonic plates collide with one rolling over the other, driving it down into the mantle. The energy can be released by elastic strain, gravity, chemical reactions, or even the motion of massive bodies. Describe how the contents of such kits help people survive the first days after an earthquake or volcanic eruption. If you continue browsing the site, you agree to the use of cookies on this website. This colorful and detailed PowerPoint and bundle explains the cause of earthquakes, the difference between magnitude (Richter Scale) and intensity (Mercalli Scale), how to triangulate an earthquake and the hazards associated with earthquakes. Tectonic activity • Stresses are caused by convection currents in the asthenosphere • Diverging convection currents in the asthenosphere caused by tensional forces in rifts (normal faults) • Converging convection currents in the asthenosphere – Sima to Sima (Oceanic to Oceanic plates) • Creating 9.0 earthquakes on the Richter scale • Convection currents in the asthenosphere – Sial to Sial … Usually we only feel the bump and rattle of these waves. Causes of Earthquakes Sometimes animals can hear the P waves of an earthquake. Earth's cooling causes the portions of Earth to move, and that movement is what we call an … year Celsius). If you continue browsing the site, you agree to the use of cookies on this website. The collision or the slipping of the tectonic plates causes vibrations in the earth due to rapid release of energy. Presentation Summary : The similarity between these 2 earthquakes lies in the fact that it is plate movement that generated the friction that caused the earthquake. How Do The Earthquakes In New Zealand And Nepal Compare? Earthquake Magnitude Earthquake Severity Richter Magnitude Earthquake Effects Less than 3.5 Generally not felt, but recorded. 2 INTRODUCTION. Natural cause: Earthquakes are the result of slow-moving processes that operate within Earth. 5.4 - 6.1 At most slight damage to well-designed buildings. Earth’s major earthquakes occur mainly in belts coinciding with the margins of tectonic plates. The primary cause of an earthquake is faults on the crust of the earth. Where the crust is being pulled apart, normal faulting occurs, in which the overlying (hanging-wall) block moves down with respect to the lower (foot wall) block. Earthquake can also cause floods and landslides. This colorful and detailed PowerPoint and bundle explains the cause of earthquakes, the difference between magnitude (Richter Scale) and intensity (Mercalli Scale), how to triangulate an earthquake and the hazards associated with earthquakes. Can cause major damage to … The list of some of the main effects caused by earthquakes are given below: 1. 3.5-5.4 Often felt, but rarely causes damage. Earthquakes are caused due to sudden lateral or vertical movements in the crust of the Earth. Clipping is a handy way to collect important slides you want to go back to later. It measured a magnitude of 9.3 and it ended up killing around 230,000 people across India, Sri Lanka, Thailand and Indonesia. The nature of earthquakes Causes of earthquakes. Earthquake can also cause floods and landslides. Causes of Earthquakes - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. 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