Essays on Earth's Crust

At one point, different concepts and theories of the natural science meet at an explanation of phenomena in a manner that most scientists may not imagine. Such is the relationship between geology and physics. Geology, definitively, is the study of the composition and elements of earth. In an advanced understanding, geology defines the different aspects of the universe such as rocks and the processes by which they change. On the other hand, physics is the branch of natural science that details the understanding of matter force, energy and matter with their movement through time and space (Anand, 2002). With ...

Question 1

Convection is organized by the circular motion of water flow or air through thermal changes in the density and gravitational attraction, which originate from the source of heat and decrease in the colder outer layers.

Craton is a lithosphere platform with the foundation of Precambrian age.

Earthquake magnitude is a scale characterizing the energy released during an earthquake in the form of seismic waves. Focus is an area of occurrence of underground hits in the earth's crust or upper mantle, resulting in an earthquake. Epicenter – is the central point of the surface of the earthquake focus. Isostasy is hydrostatic equilibrium state of the earth's crust, when the Earth's less dense ...

Minerals are classified by their chemical composition as Silicates, Phosphorites, carbonates, and halides are all major mineral groups.

Silicates contain silicon (Si) and oxygen (O), the two most abundant elements in the earth and comprise the majority of Earth's crust. They have a chemical formula SiO2. Common silicate minerals include olivine, pyroxene, amphibole, mica and quartz.

Phosphorites are sedimentary rocks of biochemical origin and are rich in phosphate with chemical formula PO4. They are mostly used as chemical fertilizers. They are also used as food preservatives, anti-corrosion agent and also in the field of metallurgy. Limestone and mudstone are common phosphate bearing rocks.Carbonates are the minerals mostly found in the Earth’s near surface crust. They have ...

The rock I will be examining in this report is granite. Granite – is the most commonly spread rock in the continental crust formed by the slow cooling and solidification of magmatic melting rocks in depth. Granite can also be formed during metamorphism – under the influence of high temperature and pressure, as well as under the influence of a variety of liquids and gases (fluids), rising from the depths. Granites play a huge role in the structure of the Earth`s crust and the whole continents, since this solid rock is one of the main materials forming the outer part of the ...

Earthquakes are vibrations of the Earth that are caused by the rupture and sudden movement of rocks along faults or breaks within the earth's crust. The elastic-rebound theory is a model used to explain the origin of earthquakes. It illustrates the buildup of elastic strain from stresses within the earth's crust and the abrupt release of energy along faults as the rocks return or rebound to their initial state (Ristau 249; Hamblin and Christiansen 510). The point within the Earth where the earthquake's energy is generated by the initial slippage or movement is called the focus. The epicenter is the ...

Depth of the Earth is mysterious and far less accessible world than the space surrounding our planet. There is no device yet that could penetrate the depths of the planet. The deepest mine in the world has a depth of 4 km whilst the deepest borehole in the Kola Peninsula - 12 km. It's only 1/500 part of the radius of the Earth! However, people have learned to "drop in" to the depths of the Earth. The main method of studying them is seismic (from the Greek. "Seysmos" - an earthquake). From earthquakes or artificial explosions in the bowels of ...