EARTHQUAKES 8 MEASURES TAKEN TO MINIMIZE EARTHQUAKES 9 BIBLIOGRAPHY 11 INTRODUCTION Earthquakes are caused by the movement of the earth’s tectonic plates. Earthquakes occur where the earth’s plates meet along plate boundaries.For example as two plates move towards each other‚ one can be pushed down under the other one into the mantle. If this plate gets stuck it causes a lot of pressure on surrounding rocks. When this pressure is released it produces shock waves. These are called seismic waves
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the plates are all ways moving.There is different boundaries for the plates in the earth there is convergent‚ Divergent‚ and transform boundaries. The transform boundaries rub together and causes enough friction that when the potential energy lets loose it creates an earthquake. convergent boundaries we’ll come together that can help make mountains because when one plate is more dense than the other plate‚ the more dense plate will move underneath of the less dense plate and Austin’s plate will
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Haiti - and the island of Hispaniola as a whole - lies on the boundary between two major tectonic plates‚ Caribbean and North America‚ which slide past each other at a speed of about 2 cm/year (Figure D). This relative motion causes the build up of pressure on several faults lines across the island. When the pressure exceeds the mechanical resistance
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crash ashore. These awe-inspiring waves are typically caused by large‚ undersea earthquakes at tectonic plate boundaries‚ when the ocean floor at a plate boundary rises or falls suddenly it displaces the water above it and launches the rolling waves that will become a tsunami. Most tsunamis about 80 percent‚ happen within the Pacific Ocean’s “Ring of Fire”‚ a geologically active area where tectonic shifts make volcanoes and earthquake common. Tsunamis may also be caused by underwater landslides
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hazard? Japan is located in three tectonic plate boundaries; the Pacific‚ Eurasian and Philippine Sea plates. A three way destructive plate boundary occurred as a result of a plate movement along the border between the plates. The Kobe earthquake was caused by pressure building as the Philippine Sea plate is subducted underneath the Eurasian plate. The further compressed Philippine Sea plate was affected underneath‚ likely the less compressed continental Eurasian Plate causing an increase of pressure
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Me and My Volcano Volcanoes exist all around the world. They can be very dangerous or unharmful. Some may seem unharmful because of their appearance‚ but they really are harmful to humans and wildlife. Volcanoes occur when two tectonic plates collide or‚ when there is a hot spot in the crust and constructive forces build a volcano. There are two types of volcanic flows pyroclastic and mud flows. Pyroclastic volcanoes occur when the amount of magma in the chamber collects and the pressure
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sandstone and shale were being deposited in some of the rift basins. During the Jurassic‚ North America completely broke away from all other continents and began floating to the present day position. North America never again felt that strong tectonic
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between two plates causing major earthquakes. Sometimes when this plates are pushed together they form fold mountains or ridges. Today we know that the continents are gradually moving apart. Therefore the there is new rocks created in between those areas. New volcanoes are created and new rocks are formed. Plate tectonics allow scientists to know about the earth’s centre. The oceanic plate slides under the continental plate because it is heavier. Once it goes under the continental plate it melts
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Planet Earth contains three compositional layers- CORE‚ MENTLE & CRUST. Core: At the centre is the densest of the three layers‚ the core. The core is a spherical mass‚ composed largely on metallic iron‚ with lesser amount of nickel and other elements. Mantle: The thick shell of dense‚ rocky matter that surrounds the core is mantle. The mantle is less dense than the core but denser than the outer most layer‚ the crust. Crust: Above the mantle lies the thinnest and outermost layer‚ the crust
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Pleistocene coral limestone and alluvium. THE CARIBBEAN is a geologically complex region that displays a variety of plate boundary interactions including subduction in the Lesser Antilles and Central America‚ transcurrent (strike-slip) motions on the northern and southern boundaries‚ and sea floor spreading in the Cayman Trough. The central Caribbean is a lithospheric plate consisting mainly of an anomalously thick‚ oceanic plateau situated between two major continental regions and therein
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