However despite this, as 95% of earthquakes occur on plate boundaries there must be some kind of link between the two and plate tectonic theory can explain this. The theory suggests that the earth’s crust is split into plates which are huge slabs of rock that move due to the convection currents in the mantle. Where two plates meet it causes friction along the plate margin and this creates stresses in the lithosphere and tension in the rock builds overtime. When the strength of the rocks under stress suddenly breaks, they fracture along cracks called faults, sending a series of seismic
As such, it rejects not only drilling into rocks to date the age of the Earth, but also ice core dating, which hint that the Earth is far older then the timeline they go by. Instead, they interpret it as a result of a global flood. Flat Earth creationism is the belief that God created the world with a flat surface 6,000 years ago. All that modern science says about shape, size, and age of the Earth is wrong, and evolution did not and still does not occur. Very few people today maintain such a belief.
The movement of the plates is divided in three ways: they move together (converge), the move apart (diverge), or they move past each other [About.com – Geology]. “Earthquakes occur along faults, where huge blocks of rock are grinding past each other. Tectonic motions produce directional pressure, which causes rocks on either side of a large fracture to move past each other. The movement is rarely smooth; usually the blocks stick because of friction, which slows their movement. Eventually, the friction is overcome and the blocks slip abruptly, releasing pent-up energy with a huge “snap”—an earthquake” (The Plate Tectonic Model – Page 107).
Thus he believed that the land moved after the coal was produced Since 1912, we have come along away in terms of technology and the improvement of our scientific discoveries. Although Wegner’s theory is widely accepted, it is only exactly that, a theory and therefore is still an open forum. In this essay I will discuss whether Wegner’s theory has become more concrete in light of recent volcanic and seismic events. Volcanic hazards can provide both opportunities and risks for individuals. Lava and pyroclastic flows are both examples of primary volcanic hazards, whilst lahars landslides are secondary.
Garrard writes “apocalypticism is inevitably bound up with imagination, because it has yet to come into being (86). Carson writes about a town that “does not actually exist” but “this imagined tragedy may easily become a stark reality we all shall know” (3). Carson uses logos many times throughout the Silent Spring excerpt. In Part 2: The Obligation to Endure, many evolutionary and scientific facts are given to the reader in order to display the impacts of mankind on the environment. Carson writes “it took hundreds of millions of years to produce the life that now inhabits the earth” and that “time is the essential ingredient” needed in order to achieve balance on the earth, but “in the modern world there is no time” (6).
This poses a great earthquake hazard to Haiti. But, the disaster was initially caused when the Caribbean plate had a transform with the North American plate. The North and South American plate were moving in a westward direction, while the Caribbean plate was unable to move. This meant that the North American plate had to slide across the Caribbean plate, forcing tension to be built up, and ultimately releasing all the energy in the form of an earthquake. Because Haiti is located almost right on top of the plate boundary near the fault lines where the shock of the earthquake occurred, it took the full force of the magnitude 7.0 earthquake.
It enabled the idea that the lighter and thicker continental blocks to float over the oceanic crust like icebergs What are the arguments against Wegener's theory? Geophysicists concluded that the Earth was made up of solid and stronger material that could not simply "float" over the seafloor. Why did the geophysicists believe the Earth's interior was so strong? They believed this because of the measurement of time. What discovery on the ocean floor resurrected Wegener's theory?
To what extent can the theory of plate tectonics explain global distribution of seismic and volcanic activity? The global seismic and volcanic activity is concentrated along the margins of the earth’s plates, which are broken pieces of the crust and are moved by convection currents that are caused by heat rising and falling inside the mantle generated by radioactive decay in the core. This movement of the plates and the Earth’s inner activity is called plate tectonics and can cause seismic and volcanic activity. However, earthquakes and volcanoes also occur within the plates rather than their edges, an example of which is the Hawaiian volcanoes that occur above a stationary hot spot beneath the Pacific plate. In the late 1960s the theory of plate tectonics was developed by Alfred Wegener and provides an explanation for the Earths tectonic behaviour, particularly the global distribution of mountain building, earthquake activity, and volcanism in a series of linear belts.
An earthquake is a sudden release of energy from the earth’s crust, because of the movement of the tectonic plates, this sudden movement creates seismic waves, and these waves are P, S, L and R. The primary waves, are the first waves to hit the surface, this is because they are longitudinal and travel like sound in short wave lengths, like pushing on a spring, these can also travel though solid and liquid. S waves arrive second because they act more like string being waved, this only travel through solids. These two are not the most powerful, this belongs to the Love and Rayleigh waves which are the last waves to hit, these move the surface in different ways love waves cause horizontal up and down movement of the earth’s crusts, while Rayleigh waves cause a rolling motion, both of these are very destructive and can cause roads to rip up and building to topple over. The power and destruction of an earthquake depends on the depth of the focus, if there is a shallow focus then the earthquake will measure high on the Richter scale, but will only affect a small area of the surface. The causes of earthquakes are tectonic plates moving suddenly, for example when the plates get snagged and caught on one another.
One of the major questions I ask is ‘Where do we stop?’ Who is to say that enough is enough and we’ve gone too far? The theory of using eugenics to better ourselves is like all of the technology developed since humans have inhabited earth. For example, when burning coal for electricity was invented it couldn’t have been predicted that releasing the fumes into the atmosphere would be bad for the earth. We only realised what was happening