Tectonic plate’s movement creates ocean basins, mid-ocean ridges, through collision. Colliding plates push sedimentary materials into an uplifted mass of rock that contains numerous folds and faults. The Earth has undergone a number of mountain building periods. The process of creation is first by the accumulation of sediments then the tectonic collision causes rock deformation and crystal uplift and finally the isocratic rebound continues to cause uplift despite erosion and causes the development of new mountain peaks through block faulting.…
13. How does the development of the theory of plate tectonics illustrate the changing nature of scientific knowledge?…
By using the principle of uniformitarianism, we can study the way rocks are formed and look at the same rock that is designed today. Same goes for the way the wind placed the sand grain and made sand dunes that were spotted in Arizona. The lithosphere theory of earth contains many different plates that float around on the upper part of the earth. This could explain how the formations of volcanoes erupt and how earthquakes happen.…
Plate tectonic theory is a widely excepted theory that the Earth’s lithosphere is made up of plates, both oceanic and continental, which slowly move due to convection currents in the mantle and the asthenosphere. However, it is very hard to be certain as we can’t see the structure of the Earth, so some people do not agree with it. This theory saw the introduction of what we know today to be tectonic plates. Tectonic plates occur where there is radioactive decay in the core and temperatures are extremely high. This decay can occur anywhere in the earth’s core. This results in a plume of magma rising through the mantle creating a thermal current. When this current reaches the surface it spreads through the asthenosphere, before cooling and sinking. These are the convection currents which move tectonic plates. Convection currents will only occur in liquid form and in warm conditions. Tectonic plate theory has evidence to prove that these currents do take place. We know that the mantle is liquid and has high temperatures as magma that originates in the mantle is molten. This means that convection currents can occur. This part of plate tectonic theory is supported by global seismic activity because if convection current did not exist and plates were not able to move, earthquakes would not occur at any plate boundaries, but particularly at collision plate boundaries as there would be no plate movement.…
Over the years proceeding the birth of the theory, increasingly convincing evidence has been gathered for proof of the theory of plate tectonics. In 1912, Alfred Wegner proposed the theory that continents are sat upon tectonic plates and that these plates are slowly drifting around the Earth (continental drift). Since then, volcanic and seismic events have made up a large proportion of the evidence towards the theory, including volcanic eruptions at both constructive and destructive boundaries, hotspots, sea floor spreading, paleomagnetism, and seismic earthquakes. However, not all of the evidence supporting plate tectonics comes from volcanic and seismic events; other evidence includes continental fit, geological evidence, biological evidence, climatological evidence and other activity at destructive plate margins.…
The plate tectonics theory was made by a German named Alfred Wegener. He stated that a single continent existed about 300 million years ago named Pangaea and that it split into two continents of Laurasia in the north and Gondwanaland in the south. Today’s continents were formed by further splitting of the two masses.…
The plate tectonic theory is the theory that describes large amounts of movements in the Earths lithosphere, whereby Continental and Oceanic crust is moved, destroyed and made from this. The idea of plate tectonics builds on other concepts such as continental drift, where continental plates over millions of years move, however the concept of continental drift was not accepted for some time, and there were many other theories to suggest that something else took place, as the idea of the earth moving was not accepted until it was clear from things such as maps and satellites which clearly show how continents such as south America and Africa used to fit together.…
* Plate tectonics: A theory that explains the global distribution of geological phenomena such as seismicity, volcanism, continental drift, and mountain building in terms of the formation, destruction, movement, and interaction of the earth's lithospheric plates.…
PLATE TECHTONIC THEORY:The lithosphere that is broken into plates move on earth’s surface relative to one another. Zones of volcanic, E.quake mark most plate boundaries.…
Plate tectonics theory, which is the modern theory of the motions of Earth’s layer, explains how geological features, such as mountain ranges, continents, and bodies of water move and form. An important aspect of plate tectonics theory is that the outer layer of the earth is divided into plates which move across the earth’s surface. “These plates move relative to each other, typically at rates of 2-4 inches per year. As the plates move, they interact along their boundaries” (Plate Tectonics). In other words, the formation of geological features occur at the plate boundaries which is where plates slide and interact. There are four types of plate boundaries: divergent boundaries, convergent boundaries, transform…
3. What are examples of the physical landscapes that can be explained by the theory of plate tectonics? The Pacific Ring of Fire, Mount Pinatubo, Pangaea, the Mid Atlantic ridge, the Rift valleys of Africa, the Himalaya mountains, etc.…
The plate tectonics theory was put forward by Alfred Wegener suggesting that the continents were at one point all conjoined in one supercontinent known as Pangaea. He then said that Pangaea had drifted apart through the movement of plates to give us the current places of continents we have today. Wegener's theory was linked to a variety of evidence, however it took further research and evidence for this to become a leading theory. This means that although volcanic and seismic events help to prove the plate tectonics theory valid, there is also a range of other factors involved.…
Plate tectonics have played a major role in the history of the Earth. All seven continents are where they are today due to the movement of plate tectonics. These seven continents were one big supercontinent called “Pangea” about 200 million years ago before breaking apart. The three different types of plate boundaries are convergent, divergent, and transform. These plate boundaries form due to the earth’s outer shell called the lithosphere having multiple plates moving around each other within the earth’s surface, allowing them to collide, separate, or slide past each other.…
The plate-tectonic theory plays a huge part in the beginning years and it tells us that continents as well as ocean floors have rigid plates in the lithosphere and these plates slide over deeper rock in the asthenosphere. The movement of these plates causes breaking and colliding across the globe and this is what in fact formed North America due to all the collisions and then welding together of many smaller continents and some island arcs during the Precambrian time.…
* The poem is about Skrzynecki’s relationship with his house where he spent his childhood at 10 Mary Street, Regents Park. This poem chronicles the day-to-day lives of the Skryznecki family in their new country.…