Discovering the Earth's Core

Human beings depend on the earth. However, the world has not been fully discovered yet. Can we truly explore the world before the end of the time or expires? Whether the world can exist long enough before exploring everything here. The earth is strange, even if we lived here a long century ago, we can not even find the center of the world. There are cores, what they call Heaven or Hell. The theory of scientists is whether God exists in the world we live in. This is what humans are facing now, finding the core to save the earth, or eventually to die here will not be able to go anywhere.

In 1936, Danish seismologist Inge Lehmann inferred its existence by studying earthquake records of the New Zealand earthquake and found that the center of the earth is different from its melting outer center. She observed that the seismic wave reflects the core boundary and can be detected by a sensitive seismograph on the surface of the earth. This boundary is sometimes referred to as Bullen discontinuity or Lehmann discontinuity. A few years later in 1940, the iron core was said to be made of solid iron, its rigidity was confirmed in 1971.

The innermost part of the earth is called the inner core and is thought to be as hot as the surface of the sun. Someone thought that the core of the earth was liquid at the time, but seismologist Inge Lehmann theoretically proved that in 1936 the core is solid and the outer core is liquid. It is believed that the inner core is made of an iron-nickel (metal) alloy. The Earth moves from the center towards the outside and consists of the inner core, the outer core, the lower mantle, the upper mantle and the crust. Scientists continue to study nuclear chiefly using seismic activity.

What is the structure of the earth, and what is the process of forming the surface of the earth? Think of the earth as an onion with five major levels. The first part of the earth, the inner part is the inner core. This is a solid consisting mainly of iron and nickel. Scientists are located 5,000 kilometers below the surface of the earth, so we can not actually enter the kernel for testing, but we anticipate that the core is solid. The second layer from the inside to the outside is the outer core. The outer core is molten, or molten iron or nickel. It is located between 2891 and 5150 kilometers in the earth. The third layer that occupies the majority of the earth is the mantle. The depth of the basement is 40 to 2900 km. It is made of lava, lighter than the iron and nickel cores, but heavier than the Earth's crust - the fourth and last layer of the earth. The thickness of the crust is 15 to 200 kilometers, made of lightweight material remaining on the surface of the earth.