A SHORT NOTE ON THE CORE

Introduction 

In the field of geography, the notions of the structure of the earth are quite responsible for providing us with a number of answers thereby, satiating our hunger for how life came into existence. The study will be conducted providing more focus on exploring the layer of earth’s core and determining its characteristics as well. It needs to be noted that the renowned scientist named “Igne Lehmann” is responsible for providing extensive explanations associated with the structure of the earth. The core of earth is subdivided into two major layers, inner and as well as outer core. Within the core region, the inner core is referred to as a large metal ball, which mainly consists of iron. Moreover, the temperature that is acknowledged within the inner core ranges from 5000 degrees Celsius to 6000 degrees Celsius. On the other hand, the outer earth’s core is liquid in nature and consists of elements such as iron and nickel.

Main body 

Understanding the structure of the earth

It is quite crucial to have a proper idea of the structure associated with the earth while talking about the earth’s core. The structure of the earth is mainly composed of three layers consequently the crust, the mantle and the core. The innermost part of the earth is referred to as the core and covers an area of around 3470 km thick. Moreover, it should also be noted that the mantle can be further subdivided into the lower as well as upper mantle. After which as we go above, we reach the crust that refers to the thinner layers out of the three that are mentioned above. The crust has majorly consisted of rocks and metals like granite, sedimentary as well as metamorphic rocks. Most commonly these layers refer to the tectonic plates that are present all over the earth.

Definition of earth’s core

Earth’s core may be defined as the densest and hottest centre of the earth and it lies beneath the mantle. The inner core consists of solids that extend to 5100 km, whereas the outer layer which is liquid or better known as the liquid core, extends to 2900 km. The earth’s core has a radius of around 3485 km.

Role of core and its importance

Three very major and significant functions are performed by the earth’s core, which is as follows.

• The earth’s core is immensely responsible for the production of the magnetic field that persists on the earth. 
• The earth’s core is a reminiscence to all past incidents that satisfies our hunger to acknowledge our very existence. 
• The core in addition to this also establishes features that constitute both “thermal and compositional” features. 

Characteristics of earth’s core

Certain significant characteristics are evidenced with respect to the innermost layer namely, the earth’s core. The most prime characteristic that it displays is it is responsible for production of a huge magnetic field. It has a size that is similar to the size of the moon and that measures 2440 km. Core is a huge ball consisting of iron and it has a high temperature of about 5200 degrees Celsius. The pressure experienced in this region amounts to 3.6 million atmospheres. Another most interesting characteristic that is noticed is that it spins faster than the entire surface of the earth. The core is often termed as the pivotal point and also refers to the iron catastrophe. 

Different layers of core 

Majorly two layers of earth’s crust are noticed, which constitutes both the inner core and molten liquid core. It needs to be noted that the line that separates both the layers of core is known as “Bullen discontinuity”. The outer core is liquid in nature and extends to 2200 km thick which amounts to 1367 miles. On the other hand, the inner core which is solid in nature extends to 1220 km which amounts to 758 miles.

Metals found in the earth’s core

The metals that are found in the region of earth’s core are mainly, liquid iron and nickel. Majorly these two metals are prominent in the region of earth’s core. The short abbreviations of alloys associated with iron and nickel have simple chemical symbols. In addition to these, siderophiles are also found within the core region of the earth. 

Conclusion 

Concluding the study, it needs to be stated that the in-depth exploration has been conducted based on the earth’s core from the structure of the earth. An effective discussion has been conducted on all the layers associated with the earth. In addition to these, we also acknowledged various interesting facts that relate to the three consecutive layers of the earth. Although, a major focus has been given on the core and as well as determining the consecutive layers associated with the earth’s core. From the earth’s core, we also obtain several knowledge about the existence of the earth, as well as, we got to know about the metals that are found in this specific region. Considerable knowledge about magnetic fields has been gathered from the characteristics expressed from the earth’s core.