Plate tectonics Essays

  • Plate Tectonics Essay

    980 Words  | 4 Pages

    PLATES TECTONICS Plate tectonics is the scientific theory that attempts to explain the motion of the Earth’s lithosphere that have formed the landscape the landscape features we see cross the globe. The theory of the plates tectonics state that the lithosphere of the earth is build up from single plates that are broken down into dozen massive and tiny particles of solid rock. These pieces of plates move near each other on the peak of the earth more fluid lower mantle to produce various type of plates

  • Plate Tectonic Plates Research Paper

    708 Words  | 3 Pages

    The World Beneath Our Feet Beneath our feet, a dozen plates are moving, creating more and more damage to human life. Millions of years ago our continents were compiled into one big block called Pangea. Plate tectonics is a theory that answers most of our questions about the earth’s surface. For example it tells us where and why most volcanoes occur, how mountains are formed and so many more questions. Plate tectonics affects our planets in many ways. They are the cause of most natural disaster such

  • Tectonic Plates In Nepal

    1308 Words  | 6 Pages

    science - tectonic plates in Nepal Introduction: Slide 1-What they are? Tectonic plates are the lithosphere of the earth, they are divided into a small number of plates around world. The lithosphere includes the crust and outer part of the mantle. Below the lithosphere is the asthenosphere, which is partially malleable, allowing the lithosphere to move around. Some plates have countries in the middle on for example like Australia and others sit on the fault lines of the other tectonic plates. These

  • Essay On Plate Tectonics

    866 Words  | 4 Pages

    Plate tectonics, the cause of many, many natural disasters and landforms. The shifting of tectonic plates can cause earthquakes, mountains, volcanoes, mid-oceanic ridges, and oceanic trenches, depending on the direction the plates move. Though it seems they have such a large effect on Earth itself, the most affected thing being Earth’s organisms. These organisms have evolved to be able to live in these conditions, be it on top of mountains or deep below the surface of the ocean. These creatures

  • Theories Of Plate Tectonics

    1141 Words  | 5 Pages

    The theory of plate tectonics was formulated in the 1960’s, to provide a realistic and complete idea of the processes that produce the Earth’s surface. These plates make up the Earth’s strong outer layer, the lithosphere. “This layer is about 100km thick, which includes the crust and the uppermost part of the mantle.” (Rafferty, 2010) Before the late 1960’s, geologists held the perspective that all the continents and ocean basins were in fixed positions. However this view was quickly dismissed, as

  • Plate Tectonics Research Paper

    888 Words  | 4 Pages

    Birth of Plate Tectonics Plate tectonics is a scientific theory, coined in the 1950s, to explain the large-scale motion of Earth’s lithosphere (the outermost shell of planet Earth). This theory is based on the idea that Earth’s lithosphere is divided into several “plates” that move across the Earth’s surface, relative to each other, gliding over the mantle. The theory of plate tectonics was developed between the 1950s through the 1970s. It is basically the modern version of the theory of continental

  • Speech About Plate Tectonics

    826 Words  | 4 Pages

    of plate tectonics was formulated in the 1960s by a German scientist called Alfred Wegener who had a theory that all the continents fit together like a puzzle. According to the theory, Earth has a rigid outer layer, known as the lithosphere, which is about 100 km or 60 miles thick and overlies a layer called the asthenosphere. The lithosphere is broken up into seven very large continentals- and ocean-sized plates, six or seven medium-sized regional plates, and several small ones. These plates move

  • Plate Tectonics Research Paper

    1378 Words  | 6 Pages

    2018 Plate Tectonics definition of plate tectonics Plate tectonics is the study of the structure of the earths crust & mantle with reference to the theory that the earths lithosphere is divided into large rigid blocks that are floating on semi fluid rock and are thus able to interact with each other at their boundaries and to the associated theories of continental drift and sea floor spreading. There are a few handfuls of major plates and dozens of minor plates. Seven of the major plates are named

  • How Does Plate Tectonics Affect The Earth

    1026 Words  | 5 Pages

    Throughout geologic history, tectonic plate boundaries have diverged, converged and transformed the Earth, causing the surface of the Earth to be in a constant state of change. Plate tectonics, at present, is observed only on the Earth and “refers to a particular mode of convection in a planetary mantle, which is made of silicate rocks” (Korenaga 2012, p. 87). The lithosphere of the Earth is divided into plates which move at different velocities over the mantle, with much of the Earth’s seismic and

  • The Plate Tectonic Theory

    1101 Words  | 5 Pages

    broke the surface into plates that float on a sea of magma below. These plates are constantly moving, drifting apart creating divergence boundaries and crashing together creating convergence boundaries, colliding with the power to forge mountains, and splitting solid rock like it was paper. The discovery of these plates didn’t happen over night, the theory has been developed over centuries and finally we understand how mountains are built and canyons are formed. The plate tectonic theory hasn’t been

  • Albert Wedgner's Theory Of Plate Tectonics

    1036 Words  | 5 Pages

    theories and ideas presented thus, not generally accepted. In the 1960s, plate tectonics emerged that explained Earth’s features such as continents, oceans, volcanoes, earthquakes, valleys and mountains. This theory became widely accepted by virtually all Earth scientists. A plate is a solid rock that is large and rigid while the Greek word tectonics means ‘to build’. Plate tectonics is the study of how the surface of the Earth is formed, how the separate pieces of it moves and the effects of this

  • Samoa's Tsunami

    957 Words  | 4 Pages

    natural disasters affected Samoa. Earthquakes Earths crust is a hard-outer cover that is surrounding around the whole earth; it is made up of many, many pieces that are called Tectonic plates. These tectonic plates are constantly moving however they move quite slowly, the move up to 5 centre meters per year. However, these plates brush against one another without causing any damage. Sometimes

  • The Geologic Cycle

    1935 Words  | 8 Pages

    formation and break down of physical Earth features. The processes that make up the Geological cycle are the tectonic cycle, the rock cycle, the hydrologic cycle and the biogeochemical cycle. There are a number of different environmental issues that are associated with the geological cycle. Most of these issues are naturally occurring and cannot be prevented. The Tectonic Cycle The tectonic cycle is a cycle that involves the movement of the Earth’s lithosphere. The word lithosphere refers to the Earth’s

  • Essay On Causes Of Earthquakes

    1268 Words  | 6 Pages

    through currents within the semi-molten level underneath the crusting, those plates gradually wander on earth’s exterior also crash, smash along, as well as dragging separated. Generally earthquakes happen in fault lines-cracks within Earth’s crusting at which a couple of plates connect with as well as smashing with each other. Our Planet 's crusting consists of any jigsaw puzzle associated with continental as well as oceanic plates which are continuously ramming one another, moving over one another, or

  • The Role Of Earthquakes In Earth

    903 Words  | 4 Pages

    An earthquake is a sudden violent shaking of the Earth’s tectonic plates caused by its movements. They usually happen around the fault lines (between the tectonic plates). Due to the movements in Earth’s mantle, it can cause the tectonic plates to move. When two tectonic plates shift against other, it causes a violent shaking of the ground. The place where they moved are called fault planes, the epicentre is the surface of the Earth that is above the hypocentre, where the earthquake starts. Earthquakes

  • Pacific Northwest Earthquake Case Study

    366 Words  | 2 Pages

    seismologists have been doing research on the Cascadia subduction zone, which is a convergent plate boundary that runs for 700 miles off the Pacific Northwest, and starts from northern California and goes all the way to Vancouver Island. A subduction zone is the place where one tectonic plate slides underneath another. However, in this case, the North American tectonic plate is stuck and is wedged against the oceanic plate called Juan de Fuca. With all the pressure building up, the edge of North America is

  • Panthalassa Ocean Essay

    1194 Words  | 5 Pages

    2.1 Tectonic History and Regional Tectonics of the study area: The Himalayas were resulted during collision of the Indian and Eurasian plates in middle to late Eocene age (Stoneley 1974,). The Eurasian plate was 1comprised of three broad geological territories, which from north to south are the Laurasian, Tethyan and Gondwanian domains. During late Paleozoic, all these domains were part of the super continental mass called as Pangea, that were surrounded by a universal ocean called as Panthalassa

  • Vanuatu Geology Script Essay

    1065 Words  | 5 Pages

    Vanuatu Slide 2: Tectonic plates are large pieces of molten rock that make up the earth’s mantle. The outer layer of the earth consists of seven main plates (the African, North American, South American, Eurasian, Indo-Australian, Antarctic and Pacific plates) and multiple smaller ones. Convection currents are heat transfers where heated magma rises and cooled magma sinks. They are caused by large movements of molecules in the asthenosphere and flow under the lithosphere, creating plate movement. This

  • Samoan Tsunami Essay

    1485 Words  | 6 Pages

    Samoa, the oceanic plate bent as it entered the trench. The bend of the plate elevates the ocean floor and makes a shape known as the outer rise that is parallel to the ocean trench. The bend of the plate results in strains in the oceanic crust, which can lead to normal faults. The Samoan earthquake was located around the northern terminus of the Tonga volcanic arc where the trench has a sharp bend going west. The earthquake happened just east of this trench. The Pacific plate entered the subduction

  • Discuss The Causes Of Earthquake In Miami

    1269 Words  | 6 Pages

    Tonga [2]. An earthquake is the result of movement from tectonic plates on earth which causes the ground to shake [3]. The earth's outer most layer, the lithosphere, is made up of the crust and uppermost mantle [4]. The crust is made of rocks, makes up less than 1% of the earth and is the hard-outer layer of earth [5]. The mantle is the largest layer of the earth and consists of dense, heated rock [6]. The lithosphere is split into tectonic plates that slowly move due to the amount of heat from the