Hot plate

Rhyolitic and Andesitic volcanic eruptions with reference to processes, which lead to the eruptions, the type of volcano produced and the reasons for the differences between the material erupted by these volcanoes. Volcanic eruptions are caused by a red-hot liquid rock, called magma inside the earth's core. Volcanoes erupt when magma rises to the surface of the earth, which causes bubbles of gas to appear in it. This gas can cause pressure to build up in the mountain, and it eventually explodes. When the

Evaluate how Plate Tectonic Theory helps our Understanding of the Distribution of Seismic and Volcanic Events (40 marks) The Plate Tectonic Theory developed in the late 1960’s, when people noticed how continents either side of the Atlantic Ocean seemed to almost fit together. Francis Bacon, an English Philosopher was aware of this as early as 1620. Topographical and geological evidence built up and allowed Alfred Wegener to publish a theory in 1912, suggesting that the continents were once all joined

volcanoes in Antarctica. The creation of the Ring of Fire is very interesting too, it is the result of plate tectonics. These are huge slabs of Earth’s crust that fit together like the pieces of a puzzle. These plates can collide, stay apart, or move up right next to each other. The convergent plate boundaries are formed by plates colliding into each other. The heavier plates slide under the lighter plates causing a deep trench in the ocean floor, as we talked about earlier. If you went down into the ocean

Earth is a very detailed planet; there are many actions going on at once on this planet. The Earth has many boundaries, plates. and layers. The plates beneath our feet mold the world we live in. While very slowly, the plates are indeed moving. There are a few variations to the plates; they have different directions in which they move in relation to separate plates. These changes in plate movement have different side effects, from ocean trenches to miles of mountain ranges. In 1912, a german climatologist

Continental Drift and Plate Tectonics Theory (Part 1a) Introduction: The Beginning of the “Continental Drift Theory” In the middle of the eighteenth century, James Hutton proposed a theory, uniformitarianism; “the present is the key to the past”. It held that processes such as geologic forces- gradual and catastrophic-occurring in the present were the same that operated in the past. (Matt Rosenberg, 2004) This theory coincides with the theory of Continental Drift that was first proposed by Abraham

layer is liquid, which can be proven due to the heat of the Outer layer. Lastly the Inner layer where there is more iron and more density. As said before the Outer core of the Earth is liquid because of the temperature. Since the temperature is so hot it causes Convection. Convection is the difference between density that is caused by heat. The whole process of heating, rising, cooling and sinking is called Convection Current, this moves in a cycle. However convection currents do not happen within

The plate tectonic theory states that rigid plates slowly ride on the molten mantle. The boundaries between the plates are known to serve as an important mineral resource. Three types of tectonic plate exist: convergent, divergent and transform boundaries. A convergent boundary represents two plates moving towards each other mostly forming a subduction. When two plates move away from each other, a divergent boundary is formed. In transform boundaries, the plates move laterally past each other (Mission

Investigating Plate Margins Plate margins are the edges of the plates, where all the power of nature is released in earthquakes and volcanoes. There are three main types of plate margins: - Spreading Boundaries There are two types of spreading boundary Ridges, where new rock is formed, pushing the plates apart, and Rift, where the plates pull apart, and the earth between them sinks. On the ocean floor the plates are spreading. All along the mid ocean

evidence found in South America and Africa. The theory of plate tectonics states that Earth’s outer shell is divided into plates. The crust and upper mantle is broken into plates that move around on the mantle, changing in size throughout time. The lithosphere makes up the crust and upper mantle and the asthenosphere a plastic like layer beneath the lithosphere. There are three types of plate boundaries. Divergent boundaries where two plates move away from each other. The ocean widens and new crust

producers of igneous rocks. OVer 90% of all active rocks are usually near the boundaries of the tectonic plates. Tectonic plates were created at mid-ocean ridges and some rift valleys, tectonic plates then were destroyed and sunken deep into the ocean trenches. When a new plate material forms, it is created in ocean ridges where the molten rocks rises from the interior it the hardens. This new plate then gets topped by the oceanic crust, therefore the surface of the crust then becomes the sea floor