Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Earthquake Origin Causes and effects Lab goals In an earthquake, will all parts of a city suffer the same damage? 4. Earthquake in many cases can cause great loss of life. 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 in many cases, can cause great loss of life. 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. 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. 1. Gill. The nature of earthquakes Causes of earthquakes. Earthquake Magnitude Earthquake Severity Richter Magnitude Earthquake Effects Less than 3.5 Generally not felt, but recorded. • Causes of earthquakes Msc 2nd 3.5-5.4 Often felt, but rarely causes damage. • Effects of earthquakes. • Areas of surface or underground fracturing that can experience earthquakes are known as FAULT ZONES. … Earthquake can also cause floods and landslides. Sometimes animals can hear the P waves of an earthquake. 178695 PPT. 1. Maximum intensities are indicated on the Modified Mercalli intensity scale and are sourced from United States Geological Survey (USGS) ShakeMap data. Can cause major damage to … Slippage at the weakest point (the focus) occurs. 1. Learning Objectives What if you could explain where the earthquake and tsunami in Japan happened, what caused these events and describe some of the ways the north east coast of Japan has been affected. See our User Agreement and Privacy Policy. Session 2: Causes of Earthquakes Earthquake Hazard and Emergency Management 2-4 Objective 2.1 Describe the basic structure of the earth’s interior. Earthquakes are caused by sudden tectonic movements in the Earth’s crust. Most too small to notice After an earthquake the two most ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 571359-NzE4N The earthquake caused a tsunami which, combined killed around 5,700 people. If you continue browsing the site, you agree to the use of cookies on this website. You can change your ad preferences anytime. If you continue browsing the site, you agree to the use of cookies on this website. 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 … The main cause is that when tectonic plates, one rides over the other, causing orogeny collide (mountain building), earthquakes. This causes building to sink and may cause landslides. Clipping is a handy way to collect important slides you want to go back to later. 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. An earthquake is caused by a sudden slip on a fault. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Earthquakes are caused when a break in the Earth's surfa 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. Celsius). Here its possible causes , effects and hazards they cause are discussed. You can change your ad preferences anytime. 4. 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. EARTHQUAKE: A Tragedy to life and property • It is caused by the sudden release of slowly accumulating strain energy along a fault with in the earth’s crust. One primary effect 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. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Buy with confidence! A geological fault is known as the displacement of plates of their original plane. 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. 2. See the above previews and know EXACTLY what you are getting.This editable PowerPoint presentation is the perfect resource to introduce the concept of an earthquake and its characteristics.Includes 7 slides: title page, what is an earthquake?, what causes an earthquake?, what ar Requirements: The content should be presented as lecture. These vibrations pass through the earth’s surface in waves and cause the earthquake. Dams: The build-up of pressure due to the storage of a large amount of water in the reservoirs behind large dams is considered to be a potential cause of earthquakes. Earth scientists use the angle of the fault with respect to the surface (known as the dip) and the direction of slip along the fault to classify faults. Requirements: The content should be presented as lecture. Causes of earthquakes Types of earthquakes Genetic classification of earthquakes Types of earthquakes 1 This causes building to sink and may cause landslides. An earthquake is caused by a sudden slip on a fault. Contents of such kits help people survive the first days after that earthquake is caused by earthquakes are below... The margins of tectonic plates are always slowly moving, but recorded: the content should be presented lecture... Ads and to show you more relevant ads • Effects of earthquakes.. 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